ASSET A QUESTION A DAY-CLASS IX

20/08/19

Subject:MATHS
Shalini is making triangles with matchsticks from a box. What is the MINIMUM number of matchsticks that she will need to make a triangle with no sides equal?
(Each matchstick should form a part of any side of the triangle and no matchstick should be bent or broken)
A
5
B
6
C
9
D
11

19/08/19

Subject:ENGLISH
''The manager was so angry when he saw the mistake in the bill that he started abusing the bank, the economy and the politicians. However, his quiver of deadly arrows eventually ran out.''
Choose the option that MATCHES the figure of speech used in the sentence above.
A
''A case of careless calculation,'' cut in Cara.
B
''Cloud, will you not pour, so that school can be closed today?''
C
They marched up to the winners' podium, inhaling the sweet smell of success.
D
The boy strutted into the room, proud as a peacock, wearing his new school uniform.

17/08/19

Subject:SOCIAL SCIENCE
These historical monuments belong to an ancient kingdom that flourished in South India during the 14th-15th centuries. Its impressive ruins surround Hampi, now a World Heritage Site, in modern-day Karnataka. Identify the kingdom.
A
Hoysala
B
Pallava 
C
Vijayanagara
D
Chola

CORRECT ANSWER:C

16/08/19

Subject:SCIENCE

The figure shows the amount of water in a graduated test-tube. The curved surface shown is called the meniscus. What is the correct reading of the volume of liquid?

A
7.1 ml
B
7.2 ml
C
6.8 ml
D
6.6 ml

Correct Answer: D

15/08/19

Subject:MATHS
11 small unit cubes are joined together as shown below to form the solid shown in Figure 2.

At least how many more unit cubes will be needed to turn the structure into a solid CUBE (not cuboid) with no gaps?
A
3
B
8
C
11
D
16

CORRECT ANSWER:D

14/08/19

Subject:SCIENCE
What happens to the individual molecules in a vegetable when we eat the vegetable?
A
Individual molecules are always broken down into their constituent atoms during the digestion process.
B
Individual molecules are always completely destroyed during the process of eating and digestion.
C
Individual molecules are always unaffected and stay in their original form in our bodies.
D
Individual molecules may stay unaffected or their atoms may recombine to form different molecules.

CORRECT ANSWER:D

13/08/19

Subject:MATHS

A bag contains some balls that are either red or yellow. There are 84 RED balls in the bag. If a ball is taken out of the bag without looking, the chances of it being RED are 70%. What is the number of YELLOW balls in the bag?

A
30
B
36
C
59
D
84

Correct Answer: B

12/08/19

Subject:ENGLISH

A woman was shot last night and the bullet is still lodged in her yet.
Which of these corrects the error in the above sentence? 
 

A
A woman was shot last night and a bullet is still lodged on her.
B
A woman was shot last night and a bullet is still lodged in her.
C
Yet, a woman was shot last night and a bullet is still lodged in her.
D
A woman was shot last night and yet, a bullet is still lodged in her.

Correct Answer: B

10/08/19

Subject: SOCIAL SCIENCE

From 31 horses in captivity in 1945, the world population of the Asian Wild Horse has been increased to about 1500 in 2005. Scientists in the UK and Mongolia gradually reintroduced these horses from zoos into their natural habitat in Mongolia, and in 2005, there were 248 of them in the wild.
From this we can conclude that _____________________________.

A
the Asian Wild Horse will never become extinct.
B
breeding animals in zoos is the only way of conserving them
C
existence of a few individuals is enough to save any species from extinction
D
it will take decades before we know the results of conservation efforts

Correct Answer: D

9/08/19

Subject:SCIENCE

The table shows the number of carbon atoms in a range of compounds made from petroleum.

Which substance would contain octane (C8H18)?

A
Petrol
B
Kerosene
C
Diesel
D
Fuel Oil

Correct Answer: A

8/08/19

Subject:MATHS
The length, breadth and height of a cuboid are doubled. 

What happens to its surface area?
A
It is doubled.
B
It becomes four times.
C
It becomes eight times.
D
(Nothing can be said with out knowing the dimensions of the cuboid.)

CORRECT ANSWER:B

7/08/19

Subject:SCIENCE
The balloon shown here is filled with water. Ramu wants to make a hole in the balloon so that the water comes out with maximum force. At which point should he make the hole?

D. The force will be the same at all points
A
A
B
B
C
C
D
D

CORRECT ANSWER:D

6/08/19

Subject:MATHS
Sona bought a T.V at nine - tenths of its actual price under a discount offer. How much discount did she get?
A
10%
B
9%
C
1%
D
0.1%

CORRECT ANSWER:A

5/08/19

Subject:ENGLISH
In which one of the sentences given below are the underlined words interchanged?
A
If you offer me chocolates, I will gladly accept them,except for the bitter ones.
B
An allusion is a reference to something, while a mirage or a magic trick is an illusion.
C
Factories must prevent environmental hazards with their affluent material in their drive to be effluent.
D
Work rigour is a tenet of the organization, while the person leasing an apartment from you is your tenant.

CORRECT ANSWER:C

3/08/19

Subject:SOCIAL SCIENCE
The image here shows an ancient ship that was found in Norway. The ship had beautiful carvings and two skeletons were found in it, which meant that it was a grave. This indicated that it belonged to people who were masters at building ships and to whom sea-faring was extremely important. Which one of the following people could it have been?
A
Mayans
B
Vikings
C
Mongols
D
Maoris

2/08/19

Subject:SCIENCE

Nuclear power plants can produce energy more cheaply and with less pollution than thermal power plants. Why are there not more nuclear power plants than thermal power plants?

A
There is an endless supply of fossil fuels like coal available.
B
Nuclear fuels produce too little heat during the nuclear fission reaction
C
A kilogram of fossil fuel produces more energy than a kilogram of nuclear fuel.
D
The issue of disposal of radioactive nuclear waste is not satisfactorily resolved.

Correct Answer: D

1/08/19

Subject:MATHS
The cuboid shown below is made of 3 unit cubes like the one to its left:

If the surface area of the cube is 18 sq. cm, what is the surface area of the cuboid in sq. cm?
A
42
B
48
C
54
D
81

CORRECT ANSWER:A

31/07/19

Subject:SCIENCE
The table below shows a few products obtained from plants and animals.

Which one of the following has been placed in the wrong column?
A
Jaggery
B
Tamarind
C
Rubber
D
Silk

CORRECT ANSWER :C

30/07/19

Subject:MATHS

Triangle XYZ is inscribed in the lower half of the circle with centre O. 



m∠X + m∠Y will be

A
< 90o
B
= 90o
C
> 90o
D
= 180o

Correct Answer: B

29/07/19

Subject:ENGLISH
When my father saw the broken headlights of his car in the parking lot, he __________.
Which of these phrases completes the sentence meaningfully?
A
blew his top
B
blew the horn
C
blew the whistle
D
blew somebody's cover

10/07/19

Subject:SCIENCE
Have you noticed when you see an object through a layer of hot air, it appears to be distorted? The reason for this phenomenon is related to:
A
density of air.
B
refraction of light.
C
temperature of air.
D
all of the above.

09/07/19

Subject:MATHS
What number does the pointer show?
A
9. 4
B
9. 54
C
9. 504
D
9. 514

08/07/19

Subject:ENGLISH
''Why don't you come over for a get together at my residence?'' Ramani asked her friend.

Which sentence rephrases the above sentence without any change in meaning?
A
Ramani suggested her friend coming over for a get together at her residence.
B
Ramani suggested to her friend, why she doesn't come over for a get together at her residence.
C
Ramani suggested that her friend could come over for a get together at her residence.
D
Ramani suggested her friend to go over for a get together at Ramani's residence.

06/07/19

Subject:SCOCIAL STUDIES
This poster commemorates an event that took place in 1941. It was a surprise military strike and resulted in the United States becoming militarily involved in World War II. What is this event?
A
Japan's attack on Pearl Harbour
B
Soviet Russia's invasion of Poland
C
U.S. Army's arrival in Great Britain
D
America's bombing raid on Germany

05/07/19

Subject:SCIENCE
Isomers are molecules which have the same number and type of atoms, but their arrangement is different. For example,
are isomers.



Which of the following is an isomer of ?
A
B
C
D

04/07/19

Subject:MATHS
A mineral water factory has 6 machines that package 3000 bottles in 1 hour. If 4 more machines of the same type are also put into use, what can be said about the time taken to package the same number of bottles now?
A
It will be 36 minutes more.
B
It will be 24 minutes less.
C
It will be 2 minutes less.
D
It will be 30 minutes more.

03/07/19

Subject:SCIENCE
In which of these ways would our vision have been affected if we had only one eye rather than a PAIR of eyes to see with?
A
We would not be able to distinguish depth well.
B
We would not be able to distinguish colour well.
C
We would not be able to distinguish motion well.
D
Our vision would not be affected in any of the above ways.

02/07/19

Subject:MATHS
See the following matchstick patterns.

How many matchsticks would be required to make a similar 10 × 10 square pattern?
A
100
B
200
C
220
D
500

01/07/19

Subject:ENGLISH
''They have been reminded several times, but they have not returned the books.''
Choose the option that can BEST replace this sentence.
A
''In spite of several reminders, they have failed to return the books.''
B
''Despite several reminders, they will not return the books''
C
''In spite of reminding many times, they never return the books''
D
''They seldom return the books on time, in spite of several reminders''

29/06/19

Subject: SOCIAL STUDIES
Hammurabi (1810 to 1750 BC) is renowned for his laws known as the 'Code of Hammurabi'. It was this code that stabilized Babylon and made it the most powerful city in all Mesopotamia. A copy of this code of 282 laws was prominently displayed in the centre of the city on a stone slab (see image) so everyone could see it. Ignorance of the law was not accepted as an excuse. What can you MOST certainly infer about the citizens of Mesopotamia from this?
A
They were encouraged to learn how to read and write.
B
They concentrated more on intellectual activities than trade.
C
The laws were not harsh and yet proper order was maintained.
D
They did not require courts or judges to maintain law and order.

28/06/19

Subject:SCIENCE
Which of the following does the term ''microbes'' refer to? 
A
all bacteria and viruses
B
organisms that are invisible to the naked eye
C
only to organisms that cause disease in man
D
only to bacteria that live in the soil and help in composting

27/06/19

Subject:MATHS
What will be the remainder when 46788 is divided by 5?
A
1
B
2
C
3
D
4

26/06/19

Subject:SCIENCE
When can we be SURE that letters X, Y and Z represent the same element?
A
When the number of electrons are the same in each of X, Y and Z.
B
When the number of neutrons are the same in each of X, Y and Z.
C
When the number of protons are the same in each of X, Y and Z.
D
X, Y and Z can never represent the same element.

25/06/19

Subject: MATHS
Parallelograms are classified according to their diagonal properties in the table below.



Which cell or cells would contain those parallelograms that are NOT rectangles?
A
only cell 3
B
cell 1 and cell 2
C
cell 1 and cell 3
D
cell 3 and cell 4

24/06/19

Subject: ENGLISH
The Principal was emphatic in her support of the new drama club.

Which option is closest in meaning to the given sentence?
A
The Principal was mistaken in her support of the new drama club.
B
The Principal was fluid in her support of the new drama club.
C
The Principal was critical in her support of the new drama club.
D
The Principal was forceful in her support of the new drama club.

22/06/19

Subject: SOCIAL STUDIES
This is a seal from the Indus Valley Civilisation showing a rhino. This suggests that the climatic/geographical features of the Indus Valley were different in those days as compared to the present. 

What can be said about the region that once was the Indus Valley Civilisation?
A
It received more rainfall.
B
It was covered with snow.
C
It extended up to Assam.
D
It was a dry desert area.

21/06/19

Subject: SCIENCE
Which of these provides the energy for the motion of a petrol car?
A
Petrol
B
Its battery
C
Its engine
D
Petrol and its battery

20/06/19

Subject: MATHS
When an odd number is divided by 25, the remainder 
A
can only be an odd number less than 25.
B
can only be an even number less than 25.
C
can be any whole number less than 25.
D
can be any whole number less than or equal to 25.

19/06/19

Subject: SCIENCE
When a person on the Earth is observing a lunar eclipse (eclipse of the Moon), an astronaut on the Moon, facing the Earth, will observe an eclipse of
A
the Sun.
B
the Moon.
C
the Earth.
D
(He will not observe any eclipse.)

18/06/19

Subject: MATHS
Shyam's father is 6 times as old as Shyam. Shyam's mother is 25 years old. The average age of this family of three is 20 years. How old is Shyam?
A
15 years
B
10 years
C
7 years
D
5 years

17/06/19

Subject: ENGLISH

&#39;I decided to take the plunge and learn to dance. I thought, if I do not
try it I would not know anything about it.&#39;


Choose the appropriate saying that would BEST describe this situation.

A As you sow, so shall you reap
B If you fail once, try, try, try again.
C Luck favours the brave.
D Nothing ventured, nothing gained.

15/06/19

Subject: SOCIAL STUDIES

An &#39;ecosystem engineer&#39; is any animal or plant that creates or
modifies its
habitat and greatly affects other plant and animal species. They are
capable of changing entire ecosystems. Which one of the following is an
example of ecosystem engineering that would have a negative effect?

A rapid growth of aquatic plants in waterbodies
B creepers that monkeys use to swing from trees
C beavers building dams and creating wetlands
D caterpillars creating shelters from leaves

14/06/19

Subject: SCIENCE

The rate of growth of hair on the human head has been estimated as about
0.44 mm per day. Assuming that this rate is uniform, about what LENGTH of
hair (considering just 1 strand) would a normal male adult cut in 20 years?

A About 30 cm.
B About 3 m.
C About 30 m.
D About 300 m.

13/06/19

Subject: MATHS
Hiralal has two wooden cubes of side 'a' cm each. He carves one of them into the LARGEST POSSIBLE CYLINDER and fixes the two solids together as shown below.

He now wants to cover this solid 
entirely with a coat of paint. 
Assuming pi = 3, the total area to 
be painted (in cm2) will be close to
A
8.75a2
B
9a2
C
10. 5a2
D
12a2

12/06/19

Subject: SCIENCE
Two similar, open cylindrical vessels are connected as shown in the figure. One of them has water in it, while the other is empty. We are required to draw the graph of the water level in each vessel against time immediately after the stopper is opened.



Which of these is the correct graph?

(The level in one cylinder is shown by the solid line and in the other by the dotted line)
A
B
C
D

11/06/19

Subject: MATHS
Which of the following expressions is the same as (a + b)3?
A
(a + b) (a + b) (a + b)
B
a3 + 3a2b + 3ab2 + b3
C
(a + b) (a + b)2
D
(all of these)

10/06/19

Subject: ENGLISH
Which of these newspaper headlines is in the PASSIVE VOICE?
A
Garbage Pile Brings Alive Dengue Fears
B
Kids Direct, Enact, Stage Play
C
Industry Captains to be Honoured
D
Curfew Forces Calm on Mangalore

08/06/19

Subject: SOCIAL STUDIES
The tourism department of which state of India would use the following images?
A
Orissa
B
Maharashtra
C
Madhya Pradesh
D
Uttar Pradesh

07/06/19

Subject: SCIENCE
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Subject: Fwd: AQAD class 9 Science, 07 June 2019
From: PRINCIPAL ISM <principal@ismoman.com>
To: SUNITHA PRAKASH <sunitha.prakash@ismoman.com>
Date Sent: Thu, 6 Jun 2019 22:19:35 -0500
Date Received: Thu, 06 Jun 2019 20:19:46 -0700 (PDT)

 
 
---------- Forwarded message ---------
From: ASSET <aqad@ei-india.com>
Date: Thu, Jun 6, 2019 at 8:43 PM
Subject: AQAD class 9 Science, 07 June 2019
To: <principal@ismoman.com>
 
AQADClass 9 Science
7th Jun, 2019 AQDA  
The figure below shows 5 heavy metal balls P, Q, R, S and T held by cords is such a way that they are exactly touching each other. The first ball P is pulled away as shown and then released so that it hits the ball Q. Which balls will move IMMEDIATELY after this?
A
Only P which will rebound back.
B
P and Q will rebound back, S and T will move forward.
C
Q, R, S and T will move forward.
D
Only T will move forward.

06/06/19

Subject: MATHS
In the figure below, PQR is an equilateral triangle and DEFG is a rectangle. 




What can we say about the measure of angle DXY?
A
It will always be 150o.
B
It will always be 135o.
C
It will always be 120o.
D
Can't say without knowing the dimensions of rectangle DEFG

05/06/19

Subject: SCIENCE
Scientists have found that even light is affected by the force of gravity, that is, the path of a light ray 'bends' towards a massive star near it. See the figure below.

Where will the neutron star shown above appear to be when seen through a telescope on earth.
A
Near A.
B
Near B.
C
Near C.
D
Near D.

04/06/19

Subject: MATHS
Three equilateral triangles are inscribed in a circle with centre O as shown below.



Which of the three triangles are congruent?
A
triangles 1 and 2 only
B
triangles 2 and 3 only
C
triangles 1 and 3 only
D
all the three triangles

03/06/19

Subject: ENGLISH
No sooner had the teacher entered the class than the children fell silent.
Which of these rephrases the above sentence without any change in meaning?
A
Hardly had the teacher entered the class when the children fell silent.
B
Hardly had the teacher entered the class while the children fell silent.
C
The teacher entered the classvery soon and the children fell silent.
D
The teacher entered the classnot too soon, but the children fell silent.

01/06/19

Subject: SOCIAL STUDIES
In India, the 'Ashok Chakra' is awarded to
A
Buddhist scholars
B
Scientists
C
Defence personnel
D
Sportsmen

31/05/19

Subject: SCIENCE
P, Q, R, S and T are five living things in an ecosystem. The following facts are known about them:
P eats Q and T. Q eats R and T. R is a food producer.
R is eaten by S, T and Q. P and Q are eaten by S.

Identify the animal which should replace the ‘?' (P ← Q means P eats Q)
A
P
B
Q
C
R
D
S

30/05/19

Subject: MATHS
Shown here is a 3x3x3 Rubik's cube. 

It is made up of 27 small cubes arranged in a 3×3×3 arrangement. If the 8 small cubes forming the corners of the cube are removed, which of these will change as compared to the original cube?
A
only the volume
B
only the surface area
C
both the volume and the surface area
D
(We cannot say without knowing the side lengths of the cube.)

27/05/19

Subject: ENGLISH
__________ by my peers was a great thrill for me. I made up my mind to do all that __________ of me during my term as the 'Head Girl' of the school.


Which option uses the appropriate pair of expressions to complete the given sentence meaningfully?
A
Been elected, is expected
B
Having elected, are expected
C
Being elected, was expected
D
Having been elected, had expected

25/05/19

Subject: SOCIAL SCIENCE

Following is an English translation of a Ghazal composed by Mirza Ghalib. 



Ghalib had said this in the context of an important historical event that destroyed Delhi. Which event was it? 
 

A
the Sepoy Mutiny
B
the Partition of India
C
the Quit India Movement
D
the Fall of Emperor Humayun

Correct Answer: A

24/05/19

Subject: SCIENCE

Two liquids P and Q, and two solids R and S are shown in different undisturbed arrangements below. Study the arrangements and arrange P, Q, R and S in order of INCREASING density.

A
P < Q < R < S
B
Q < S < P < R
C
Q < P < S < R
D
S < Q < P < R

Correct Answer: B

23/05/19

Subject: MATHS
The average height of students in a class is 160 cm. Two students whose height are 145 cm and 175 are newly admitted to the class. How will the average height of the class change because of this?
A
It will increase.
B
It will decrease.
C
It will remain the same.
D
(Nothing can be said as the total number of students is not known.)

CORRECT ANSWER:C

22/05/19

Subject: SCIENCE

In a deep valley on the Earth, a person shouting will hear an echo as the sound is reflected back off the surrounding mountains.
In a similar valley on the Moon, no echo will be heard. This is because_______________.

A
the gravitational pull on the Moon is too low
B
the temperature on the Moon is too low
C
there is no air on the Moon for the sound to travel through
D
the mountains on the Moon cannot reflect sound.

Correct Answer: C

21/05/19

Subject: MATHS

Mr. Kaul deposits a fixed amount of money for a 5 year period. Some details of the account (Interest compounded annually) are given below: 
Principal on which interest is computed for the first year : Rs 40000
Interest earned for the first year : Rs 2000
Interest earned for the second year : Rs 2100
Interest earned for the third year : Rs 2205
The amount (Principal) on which the interest for the fourth year will be calculated is

A
Rs 2,205
B
Rs 40,000
C
Rs 46,305
D
Rs 46,615

Correct Answer: C

20/05/19

Subject: ENGLISH

Choose the best word to complete the sentence given below.

The crew waited for the commander to _________ from the ship first.

A
dismount
B
disembark
C
alight
D
ascend

Correct Answer: B

19/05/19

Subject: SOCIAL SCIENCE

The structure shown here was created during the rule of the Vijayanagar empire in South India in the medieval period. The structure was _______.

A
a foundation for the defence wall around the royal residence.
B
a secret passage for the soldiers used during war times.
C
a raised water channel surrounding the royal centre.
D
a circular path around a temple complex of the royal centre.

Correct Answer: C

18/05/19

Subject: SCIENCE

When the ball at the end of the string swings to its lowest point, the string is cut by a sharp knife as shown. Assuming no air resistance, what will be the path of the ball?

A
 
B
 
C
 
D
 

Correct Answer: C

16/05/19

Subject: MATHS
The product of 100 real numbers is -100. AT LEAST how many of these 100 real numbers must be positive?
A
99
B
2
C
1
D
None

CORRECT ANSWER:C

15/05/19

Subject: SCIENCE

1. When plants are exposed to light, photosynthesis and cellular respiration both occur. 

2. When plants are exposed to light, only photosynthesis occurs.

3. When plants are kept in the dark, neither photosynthesis nor cellular respiration occurs. 


Which of the above is/are TRUE?

A
1 and 3 only
B
2 and 3 only
C
only 2
D
only 1

Correct Answer: D

14/05/19

Subject: MATHS

x and y are 2 different numbers. What can be added to 6x to get 9y?

A
3y
B
3x
C
9y - 6x
D
(It is not possible to get 9y as 6x and 9y are not like terms.)

Correct Answer: C

13/05/19

Subject: ENGLISH

Odissi is one of the oldest forms of dance in India.
Which of these rephrases the above sentence without any change in meaning?

A
No other dance form in India is as old as Odissi.
B
None of the dance forms in India are as old as Odissi.
C
Neither of the dance forms in India is as old as Odissi.
D
Very few forms of dance in India are as old as Odissi.

Correct Answer: D

11/05/19

Subject:SOCIAL SCIENCE

In 2001, the Pre-conception and Pre-natal Diagnostic Tests Act (PCPNDT) Act was declared which forbids parents from finding out the sex of the child in the mother's womb through any medical procedure.

What is the main reason for the passing of this act?

A
an overall decrease in the national population
B
an increase in the killing of unborn female children
C
an increase in the national medical expenditure
D
an international treaty that made India pass this act

Correct Answer: B

10/05/19

Subject: SCIENCE

Non-metals and metals both react with oxygen to form oxides.

What will happen if these oxides are dissolved in water separately?

A
Both the metallic oxides and the non-metallic oxides will form acids.
B
The oxides will get dissolved in water and will not change chemically.
C
The metallic oxides will form bases and non-metallic oxides will form acids.
D
They will react with water to form respective elements and will liberate oxygen gas.

Correct Answer: C

9/05/19

Subject: MATHS

In the figure, OP is parallel to base MN of right angled triangle LMN. Also, LO = 3 cm, OM = 6 cm and MN = 15 cm. What is the perimeter (in cm) of trapezium OPNM?

A
30
B
32
C
34
D
42

Correct Answer: C

8/05/19

Subject: SCIENCE
Taslima has two glass tubes. Each tube contains a one-rupee coin and a small feather. Tube 1 is with a cork; the air in tube 2 has been pumped out and the tube sealed. 
After shaking the tubes to bring coin and feather to one end, she quickly brings the tube to a vertical position and watches the two objects fall in tubes 1 and 2.



What is she likely to observe?



A
A
B
B
C
C
D
D

7/05/19

Subject: MATHS

Which of the following would be a rational number?

A
B
C
D

Correct Answer: B

6/05/19

Subject: ENGLISH

I met an European, an American and a Ukranian. 
The sentence is __________.

A
Correct. No change needs to be made.
B
Incorrect. The 'a' should be replaced with 'an' before 'Ukranian'.
C
Incorrect. The 'an' should be replaced with 'a' before 'European'.
D
Incorrect. The 'an' should be replaced with 'a' before 'American'.

Correct Answer: C

4/05/19

Subject: SCIENCE

An astronomical telescope typically has two convex lenses, while a terrestrial telescope has three. The extra lens in a terrestrial telescope___________ 

A
helps us to see an erect image instead of an inverted one.
B
filters out blue which is the predominant colour on earth.
C
allows us to use a terrestrial telescope in the daytime also.
D
makes it possible for us to see objects that are not too far away.

Correct Answer: A

3/05/19

Subject: SOCIAL SCIENCE

The economy of India is based in part on planning through its five-year plans. The first five-year plan (1951-1956) was presented by Jawaharlal Nehru to the Parliament of India. The objective of the First Plan was to make the country self-reliant and improve the standard of living. Which of the following areas did the First Plan probably NOT target?

A
irrigation and energy
B
information technology
C
transport and communications
D
agriculture and community development

Correct Answer: B

2/05/19

Subject: MATHS
A regular pentagon has side lengths as shown:

The value of 't' is
A
9.
B
4.
C
3.
D
2.

CORRECT ANSWER:B

1/05/19

Subject: SCIENCE

Which of these animals has the hardest outer skeleton?

A
B
C
D

Correct Answer: D

29/04/19

Subject: MATHS

What will be the remainder when 3333333 × 3333333 × 3333333 is divided by 5?
(Note: You need not actually calculate the product.)

A
7
B
4
C
3
D
2

Correct Answer: D

30/04/19

Subject: ENGLISH

The Principal was emphatic in her support of the new drama club.

Which option is closest in meaning to the given sentence?

A
The Principal was mistaken in her support of the new drama club.
B
The Principal was fluid in her support of the new drama club.
C
The Principal was critical in her support of the new drama club.
D
The Principal was forceful in her support of the new drama club.

Correct Answer: D

27/04/19

Subject: SOCIAL SCIENCE
The painting shown here is drawn by a Patua artist of West Bengal. The purpose of the painting is mainly to generate awareness about a particular social issue. Which one? 
A
literacy for all
B
family planning
C
religious tolerance
D
freedom of expression

26/04/19

Subject: SCIENCE

Some white blood cells destroy harmful bacteria within the human body by engulfing them and digesting them, in the same way that amoeba engulf their food.

Which of the following characteristics of some white blood cells allows them to do this?

A
 the ability to divide
B
 the presence of a nucleus
C
 the ability to change shape
D
 the absence of any haemoglobin

Correct Answer: C

25/04/19

Subject: MATHS

Mrs. Singh and her son start from home in their car. She is on her way to the supermarket. On the way, she stops to drop her son at his drawing class. She drives on to the supermarket, spends some time shopping there and then drives back home.

Which of the graphs below correctly describes Mrs. Singh's journey?

A
B
C
D

Correct Answer: D

24/04/19

Subject: SCIENCE

An astronomical telescope typically has two convex lenses, while a terrestrial telescope has three. The extra lens in a terrestrial telescope___________ 

A
helps us to see an erect image instead of an inverted one.
B
filters out blue which is the predominant colour on earth.
C
allows us to use a terrestrial telescope in the daytime also.
D
makes it possible for us to see objects that are not too far away.

Correct Answer: A

23/04/19

Subject: MATHS
Three square tiles can be used to form a right-angled triangle by placing them corner to corner as shown below. 

The areas of some square tiles given below. Which three tiles can be placed corner to corner, in the manner shown above, to form a right-angled triangle?
A
It is possible to do it with any three tiles.
B
Tiles P, R and T
C
Tiles S, R and T
D
Tiles Q, R and S

CORRECT ANSWER:D

22/04/19

Subject: ENGLISH
Choose the correct option that completes the sentence below.

Both students are equally good, __________.
A
either is capable of winning the President's Cup
B
nor is one capable of winning the President's Cup
C
either are capable of winning the President's Cup
D
or are capable of winning the President's Cup

CORRECT ANSWER:A

20/04/19

Subject: SOCIAL SCIENCE

The painting shown here is drawn by a Patua artist of West Bengal. The purpose of the painting is mainly to generate awareness about a particular social issue. Which one? 

A
literacy for all
B
family planning
C
religious tolerance
D
freedom of expression

Correct Answer: A

19/04/19

Subject: SCIENCE

See the map of the world shown below. Which of the places shown is closest to Bolshevik Island?

A
Queen Elizabeth Islands
B
Moscow
C
Kolkata
D
Cape of Good Hope

Correct Answer: A

18/04/19

Subject: MATHS
Study the following figure:

 

Lines l and m are parallel to each other. What would be the measure of the angle marked z?
A
40o
B
60o
C
80o
D
(The given information is not sufficient to answer the question.)

CORRECT ANSWER:C

17/04/19

Subject: SCIENCE

Darsheel took an empty plastic bottle and used a nail to poke a hole on the side of the bottle. 
 
He covered the hole with his finger and filled the bottle with water all the way to the top. Then he tightly screwed on the cap, and slowly took his finger away from the hole. No water came rushing out of the hole, when he did this. 


How is this possible?

A
Atmospheric pressure acts on the hole pushing the water in, but because the cap is closed, no atmospheric pressure acts on the surface of the water, to push it down and force it out of the bottle.
B
The weight of the water in the bottle exerts more force against the atmospheric pressure acting on it, preventing water from coming out of the bottle.
C
He must have conducted the experiment on a day when the atmospheric pressure was very low, so there was not enough pressure on the water to push it out of the bottle.
D
The hole he had made was too high. If it was lower, near the base of the bottle, the water would have come out.

Correct Answer: A

16/04/19

Subject: MATHS

Out of 30 class 9 students, some students have participated in one or both of the sports, tennis and table tennis. The diagram below represents some information about number of participants.



What would come in the place of 'x' if it is known that 10 students of the class didn't participate in any of the two sports?

A
8
B
10
C
18
D
(We cannot say anything based on the given information.)

Correct Answer: A

15/04/19

Subject: ENGLISH
Shown here is a poster about an event which took place in Rwanda in 1994 where thousands of people were killed because of the conflict between the Tutsi and Hutu groups. In Darfur, a similar conflict began in February 2003 and since then about 4,50,000 people have been killed. They are both highly controversial events. What issue are they related to?
A
ethnic genocide
B
illegal gun trade
C
drugs trade
D
capital punishment

CORRECT ANSWER:A

12/04/19

Subject: SCIENCE

At its most basic level, this is all the body of a camera is -- a sealed box with a shutter that opens and closes between the lens and film.  

The shutter can be adjusted as per the surrounding light condition. Shown here are different arrangements of a shutter. 

 

Which of the following parts of the eye functions in a similar way to the shutter? 

A
A
B
B
C
C
D
D

Correct Answer: A

11/04/19

Subject: MATHS

The length, breadth and height of a cuboid are doubled. 

What happens to its surface area?

A
It is doubled.
B
It becomes four times.
C
It becomes eight times.
D
(Nothing can be said with out knowing the dimensions of the cuboid.)

Correct Answer: B

10/04/19

Subject: SCIENCE

Study this electrical circuit. It consists of a powerful battery, a bulb, an electromagnet and a movable connection. The connection is designed in such a way that it closes (that is, it allows electric current to pass) when the electromagnet is not magnetised; but opens when the electromagnet is magnetised.

If the electromagnet takes 5 seconds to get magnetised, what will be status of the electric bulb?

A
It will remain OFF - it will not glow at all.
B
It will alternate between ON and OFF states.
C
It will come ON after some seconds and keep glowing.
D
It will stay ON for a few seconds and then go OFF.

Correct Answer: B

9/04/19

Subject: MATHS

A number x is increased by 20% to get another number y. By what percentage should y be decreased to get x?

A
About 22.5%
B
20%
C
About 16.7%
D
It will depend on the value of x.

Correct Answer: C

8/04/19

Subject: ENGLISH
Rewrite the given sentence in reported speech:

Shalini said to her friend, ''Yes, I will come with you tomorrow.''
A
Shalini told her friend that she would go with her the next day.
B
Shalini told her friend she will go with her tomorrow.
C
Shalini told her friend she will come with her the next day.
D
Shalini said yes she would go with her friend the next day.

6/04/19

Subject: SOCIALSCIENCE

'Step Farming' is a type of agricultural practice. In which of the following types of landscapes is it practised?

A
Coastal sand dunes
B
Alluvial plains
C
Mangrove forests
D
Hill slopes

Correct Answer: D

5/04/19

Subject: SCIENCE

An object is placed on the principal axis of a concave mirror as shown in the figure. A ray from the object after reflection passes through the focus, F.


If a normal were drawn at the point of incidence, where would the normal cut the principal axis?

A
between F and C
B
at C
C
beyond C
D
(cannot be sure because it could vary depending on the focal length)

Correct Answer: B

4/04/19

Subject: MATHS

The cuboid with dimensions 15 cm × 8 cm × 9 cm is sliced along the plane PQRS as shown.

What is the area of the shaded face PQRS obtained after slicing?

A
120 cm2
B
135 cm2
C
136 cm2
D
153 cm2

Correct Answer: D

2/04/19

Subject: MATHS

The cuboid with dimensions 15 cm × 8 cm × 9 cm is sliced along the plane PQRS as shown.

What is the area of the shaded face PQRS obtained after slicing?

A
120 cm2
B
135 cm2
C
136 cm2
D
153 cm2

Correct Answer: D

1/04/19

Subject: ENGLISH

Which part of this sentence contains an error?

Although Mitali did not know how to dance, but she took part in the competition.

A
Although Mitali did not know
B
how to dance,
C
but she took part
D
in the competition.

Correct Answer: C

29/03/19

Subject: SCIENCE

When Ram was about to switch on the light in his room, his sister stopped him. She told him that he should first DRY his hands (which were wet), before touching the electric switch.

Was Ram's sister correct? Why / why not?

A
Yes. The water can cause a short circuit (There is no increased danger to Ram)
B
No. We should be careful in any case - dry or wet makes no difference.
C
Yes. Wetness reduces body resistance and increases danger of shock.
D
No. Water is a poor conductor of electricity, hence wet fingers are safer.

Correct Answer: C

28/03/19

Subject: MATHS

x2 + 1/x2 is NOT equal to

A
(x + 1/x)2 - 2
B
(x - 1/x)2 + 2
C
(x + 1/x)2
D
(x4+1)/x2

Correct Answer: C

27/3/19

Subject:SCIENCE
The sound being produced by a large machine in a factory is shown by this graph. An engineer has a theory. He says that he will create a sound using a computer and amplifier that will produce an 'anti-noise' having exactly the opposite wave form - and this will cancel out the sound and reduce the noise quite a bit.


Can this idea work?
A
Yes, this is used in some applications.
B
Yes, in theory, but it doesn't work in practice.
C
No, the noise will, in fact double.
D
No, the machine will drown out the computer noise.

CORRECT ANSWER:A

26/3/19

Subject:MATHS



What can be said WITH CERTAINTY about the product of two irrational numbers from the above example?

The product of two irrational numbers is

A
always a rational number.
B
always an irrational number.
C
always 1.
D
not necessarily an irrational number.

Correct Answer: D

25/3/19

Subject:ENGLISH

''The manager was so angry when he saw the mistake in the bill that he started abusing the bank, the economy and the politicians. However, his quiver of deadly arrows eventually ran out.''
Choose the option that MATCHES the figure of speech used in the sentence above. 

A
''A case of careless calculation,'' cut in Cara.
B
''Cloud, will you not pour, so that school can be closed today?''
C
They marched up to the winners' podium, inhaling the sweet smell of success.
D
The boy strutted into the room, proud as a peacock, wearing his new school uniform.

Correct Answer: C

23/3/19

Subject:SOCIAL SCIENCE

The picture here shows the legendary figure Mirabai. Which form of 
Indian Music does she represent?

A
Bhakti
B
Sufi
C
Carnatic
D
Lavani

Correct Answer: A

22/3/19

Subject:SCIENCE

Mary took four pots having the same plants of the same age and applied Fertilizers P and Q in the quantities shown. All the plants were kept undisturbed in similar conditions near each other. The results after a few days are also shown:

Which of these could explain the observations?

A
Fertilizer P is more effective for the plant than Fertilizer Q.
B
Fertilizer Q is more effective for the plant than Fertilizer P.
C
In smaller quantities Fertilizer P is more effective; in larger quantities, Fertilizer Q
D
In smaller quantities Fertilizer Q is more effective; in larger quantities, Fertilizer P

Correct Answer: C

21/3/19

Subject:MATHS

Tiles identical to the one shown below are piled up one on top of another to form a tower of volume 1830 cm3. What is the height of the tower (in cm)?

A
18.3
B
30.5
C
183
D
Can not say unless the number of tiles used is given.

Correct Answer: B

20/3/19

Subject:SCIENCE

Most television sets these days can be operated through a REMOTE CONTROL. How do most 'remotes' communicate with TV sets?

A
Using radio waves
B
Using infra-red rays
C
Using ultra-violet rays
D
Using microwaves

Correct Answer: B

19/3/19

Subject:MATHS

(x + 1)3 is the same as

A
x3 + 1
B
(x2 + 1) (x + 1)
C
(x + 1) (x + 1)2
D
x3 + 3x2 + 1

Correct Answer: C

18/3/19

Subject:ENGLISH

Most students end up___________________ during their examinations.

A
letting the cat out of the bag
B
burning the candle at both ends
C
burning the midnight oil
D
putting the cart before the horse

Correct Answer: C

16/3/19

Subject:SOCIAL SCIENCE

The figures shown below are related to

A
the Chipko Movement for environmental conservation
B
the Green Revolution to promote Indian agriculture
C
Operation Flood to promote milk production in India
D
the rapid growth of consumerism in rural India

Correct Answer: C

15/3/19

Subject:SCIENCE

The figure below shows the path taken by a ray of light as it reflects off a smooth surface. Which of these is true?

A
angle ABE = angle ABC
B
The path A----> B----> C is the shortest path connecting A to C and touching DE.
C
B will always be the mid point of DE.
D
If DE (the mirror) is rotated around B, the ray would still reflect along BC.

Correct Answer: B

14/3/19

Subject:MATHS

Shown here is ΔPQR. QS and RT are the altitudes of ΔPQR. If PR = 6 cm, QS = 3 cm and RT = 4.5 cm, what is the length of side PQ?

(Note: the figure is not to scale.)

A
4 cm
B
4.5 cm
C
5 cm
D
5.5 cm

Correct Answer: A

13/03/19

Subject:SCIENCE
What are vitamins?
A
substances required in small amounts for normal body growth and activity.
B
substances that serve as a major energy source in the diets of animals.
C
complex biological molecules which are the 'building blocks of life'.
D
inorganic elements that are essential to the nutrition of animals and plants.

CORRECT ANSWER:A

12/03/19

Subject:MATHS

Nalini had some shares which she sold when their price was 3.5 times the price at which she had bought them. Her profit from this transaction was

A
3.5%.
B
350%.
C
25%.
D
250%.

Correct Answer: D

11/03/19

Subject:ENGLISH

A: Did you know Edison was a magnificient scientist whodeviced a way to capture lightening?
B: No, he didn't. He figured out how to use electricity. In fact, you can say his work is reminiscent of the work done by Benjamin Franklin.
Which of the underlined words in the conversation has been spelt CORRECTLY?

A

magnificient

B

deviced

C

lightening

D

reminiscent

CORRECT ANSWER:D

9/03/19

Subject:SOCIAL STUDIES
Shown here is a painting by Michael Ray Charles, a 21st-century African American artist. His work has been highly controversial, for both black and white audiences. This is due to his use of stereotypical caricatures of blacks. These caricatures were first used by whites in American advertising, even up until the first part of the 20th century.

In an interview about his art, Michael Ray Charles said, ''One could think about ideas of blackness and how they're linked to entertainment, athleticism, sports (which has become another form of entertainment), but never intellectualism for the most part. And if that is the case, it's very rare. But for the most part, collectively, I would say that blackness continues to stay around this comfort zone of entertainment--providers of entertainment.''

What did he mean?
A
American people, on the whole, do not take black views very seriously.
B
American culture automatically connects images of black people to intellectualism.
C
Stereotypical images of black people represent their correct place in American culture.
D
Modern entertainment in America cannot do without black entertainers and performers.

CORRECT ANSWER:A

8/03/19

Subject:SCIENCE

Setup P below shows an egg being boiled. In setup Q, a similar arrangement is used, but inside an apparatus which creates near-vacuum conditions.

Will the egg in setup Q get cooked faster?

A
Yes, lower pressure lowers the boiling point, so the water and egg will boil earlier than setup P.
B
No, lower pressure raises the boiling point, so the water and egg will boil later than setup P.
C
No, lower pressure lowers the boiling point; the water will boil away quickly but the egg will not boil.
D
Yes, lower pressure raises the boiling point, so the water will get hotter and the egg will boil faster.

Correct Answer: C

6/03/19

Subject:SCIENCE

Which of these is NOT a function of blood?

A

To digest and absorb food.

B

To protect against disease.

C

To carry waste away from cells.

D

To carry oxygen to cells.

5/03/19

Subject:MATHS
x and y are factors other than 1, of the number N. 

Which of these will ALWAYS be a factor of N?
A
xy
B
x + y
C
any multiple of x or of y
D
the least common multiple of x and y

CORRECT ANSWER:D

4/03/19

Subject:ENGLISH
The correct noun form of the word reverential is
A
reference
B
reverence
C
revered
D
reverral

CORRECT ANSWER:B

2/03/19

Subject:SOCIAL SCIENCE
Shown below is the map of the Indian Ocean region showing sea routes that flourished during the Medieval Period. During the 12th century AD, this region was an active centre of trade between the ports of Eastern Africa and the western coast of India. The trade wind (monsoon wind) had been instrumental for sailing between the East African coast and the Western Indian coasts. 

Which of these seasons was ideal for sailing from East Africa towards the western coast of India?
A
summer
B
winter
C
throughout the year
D
spring

CORRECT ANSWER:A

1/03/19

Subject:SCIENCE

Which of the following will be the colour of the light that comes out of the second prism?

A
red colour
B
rainbow colours
C
white colour
D
no light will come out

Correct Answer: A

28/02/19

Subject:MATHS
A triangle KLM is cut out from a rectangular sheet as shown here. 

 

What will be the perimeter of triangle KLM?
A
15 cm
B
16 cm
C
20 cm
D
Cannot be calculated.

27/02/19

Subject:SCIENCE

A thin beam of light was made to fall on mirror 1 as shown in the diagram below. Four boxes were placed in front of mirror 2. On which box is the beam likely to fall after reflecting off mirror 1 and mirror 2?

A

A

B

B

C

C

D

D

CORRECT ANSWER:B

26/02/19

Subject:MATHS

What is the measure of PQR in the parallelogram PQRS given below?

A

62o

B

75o

C

88o

D

105o

25/02/19

Subject:ENGLISH
The two men went to the city. They drove in an open car. They were waving enthusiastically and shaking hands whenever possible.
Which of these combines the above sentences correctly?
A
Once they were, in the city the two men drove in an open car waving enthusiastically and shaking hands whenever possible.
B
Once they were in the city the two men, drove in an open car waving enthusiastically and shaking hands whenever possible.
C
Once they were in the city, the two men, drove in an open car, waving enthusiastically and shaking hands whenever possible.
D
Once they were in the city, the two men drove in an open car, waving enthusiastically and shaking hands whenever possible.

23/2/19

Subject:SOCIAL SCIENCE

What issue or concern is this cartoon trying to highlight?

A

Rising poverty in underdeveloped nations

B

Possibility of a nuclear war on earth

C

Increasing global warming

D

Depletion of the earth's fuel reserves

CORRECT ANSWER:D

22/2/19

Subject:SCIENCE

The density of ice is less than that of water. Shown here is a beaker that contains ONLY SOLID ICE. The initial level is as indicated in the figure.



If all the ice becomes water, the level will -

A

go up.

B

come down.

C

remain at the same place.

D

(cannot say without knowing the exact room temperature)

Correct Answer: B

21/2/19

Subject:MATHS

(x + 1)2 - x2 is equal to

A

1

B

x2 + 1

C

2x + 1

D

(It will depend on the value of x.)

CORRECT ANSWER:C

20/2/19

Subject:SCIENCE
Jigar knows that there is a pest destroying crops in his field. He wants to find out where the insect has spread in his field. The circles marked in the boxes represent the plants that are chosen as samples. Which pattern for collecting 10 plants would provide the best data of the spread of this insect?
A
B
C
D

19/2/19

Subject:MATHS

In which of the following is the dotted line a median of the triangle?

A

 

B

 

C

 

D

CORRECT ANSWER:A

18/2/19

Subject:ENGLISH

Shanti smiled to herself as she opened her grandmother's cupboard. She lived by the saying 'an idle mind was the devil's workshop' and her cupboard was filled with her handiwork.



Choose the option that BEST describes Shanti's grandmother.

A

She did not believe in giving things away.

B

She believed that one must not waste things.

C

She believed that one ought to keep busy always.

D

She believed in thinking about her bad feelings.

Correct Answer: C

16/2/19

Subject:SOCIAL SCIENCE
Raja Ram Mohan Roy is well-known for his efforts to abolish the practice of Sati. It was in 1829 that the practice was formally banned in the Bengal Presidency lands by the then governor-general. He consulted Roy and was assured that banning Sati would not violate religious liberty. Who was this governor-general?
A
Warren Hastings
B
William Bentinck
C
Henry Hardinge
D
Charles Cornwallis

15/2/19

Subject: SCIENCE

Small amounts of chromium added to iron produces a metal much tougher than iron. Small amounts of copper added to gold makes the jewellery harder. The addition of two metals involves melting them.
This kind of addition of two metals creates ________________.

A
a new element
B
a mixture with different physical properties
C
a compound with different chemical properties
D
a mixture or a compound depending on the temperature

Correct Answer: B

14/2/19

Subject: MATHS

Machu is making patterns like the ones shown below with matchsticks.

Which figure in his pattern would require exactly 97 sticks to make?

A
Figure 32
B
Figure 48
C
Figure 49
D
Figure 95

Correct Answer: B

13/2/19

Subject:SCIENCE
Gears are used to change speed in rotational movement.



When two meshing gears are such that the SAME pair of teeth in both gears meshes every time, it causes more wear and tear, damaging the gears. Which of the following pairs of gears will minimise this problem and last longer?
A
 
B
C
D

CORRECT ANSWER:D

12/2/19

Subject:MATHS

The measures of four angles of a quadrilateral are 60o, 72o, 108o and 120o. 

Which can be said about the quadrilateral?

A

It has to be a trapezium.

B

It has to be a rhombus.

C

It could be any parallelogram.

D

A quadrilateral with four such angles is not possible.

CORRECT ANSWER:A

11/2/19

Subject:ENGLISH

It's useless to expect a person to keep his word about anything he says when he is in love, drunk or campaigning for elections.
What word would be used to describe the above comment?

A

sarcastic

B

idealistic

C

lethargic

D

enthusiastic

CORRECT ANSWER:A

9/2/19

Subject:SOCIAL SCIENCE

In what kind of climatic region is such a process possible?

A

hot desert regions where rainfall is scanty

B

arid plateau regions where rainfall is moderate

C

moist tropical hill slopes where rainfall is plenty

D

mangrove forest regions in tidal waters

8/2/19

Subject: SCIENCE



Shown above is the orbiting of the Moon around the Earth. Between which two points will the Moon be 3 days after the full Moon?

A

S and T

B

T and Q

C

Q and R

D

R and S

Correct Answer: D

7/2/19

Subject:MATHS

he average height of the students in a class is 165 cm. One student left the class because of which the average height of the class became 164 cm. The height of the student who left is

A

equal to 165 cm.

B

less than 165 cm.

C

greater than 165 cm.

D

(We cannot say any of the above.)

CORRECT ANSWER:C

6/2/19

Subject:SCIENCE

Samir had a puppy who grew to twice its original size in 4 weeks. Which answer below best explains why the puppy got bigger?

A

The total number of cells in its body increased.

B

The number of bones increased, and the skin got stretched.

C

The number of cells remained the same, only their size increased.

D

The amount of blood increased in its body, increasing its overall size.

CORRECT ANSWER:A

5/2/19

Subject:MATHS

Increasing a number by 100% is the same as

A

multiplying the number by itself.

B

multiplying the number by 2.

C

adding 2 to the number.

D

adding 100 to the number.

CORRECT ANSWER:B

4/2/19

Subject:ENGLISH

A panda bear walked into a restaurant. He sat down at a table and ordered some food. When he finished eating, he took out a gun and shot his waiter. He then left the restaurant. 
Which of the options below explains the panda's actions BEST?

A

He eats shoots, leaves.

B

He eats shoots: leaves.

C

He eats shoots and leaves.

D

He eats, shoots and leaves.

CORRECT ANSWER:D

2/2/19

Subject:SOCIAL SCIENCE
Some of India's large government establishments such as the railways, the postal services, and map surveys were initiated during the British Raj. Which of the following was the major factor that led the British to introduce these services in India?
A
To deepen their knowledge of India's history and culture
B
To reach all corners of India for the purpose of trade
C
To enjoy their leisure in exotic locales of India
D
To generate employment among poor people of the country

1/2/19

Subject:SCIENCE

Shyamal connects a carbon rod to the negative terminal and a copper plate to the positive terminal of a cell. He dips these electrodes in a solution of copper sulphate and switches the current on. Copper gets deposited on the carbon rod. He stops the current after sometime.
He now wants to remove the copper deposited on the carbon rod electrically. What should he do before switching on the electricity in his set-up?

A
replace the copper plate from positive terminal with a carbon rod
B
replace the copper sulphate solution with distilled water
C