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Subject :NSO    Class : Class 5

Ans 1:

Class : Class 6

Ans 2:

Class : Class 6
both answers b and c are not advisable

Ans 3:

Class : Class 6

Ans 4:

Class : Class 6

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Subject :NSO    Class : Class 5

Ans 1:

Class : Class 6

Ans 2:

Class : Class 4

Ans 3:

Class : Class 8
After unscrambling the four jumbled words. We get, Sedimentation, Chlorination, Distillation and Filtration. Filtration and Sedimentation are methods of removing insoluble impurities. Distillation is the only option that is used to remove soluble impurities.

Ans 4:

Class : Class 4

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Subject :NSO    Class : Class 4

Ans 1:

Class : Class 7
The pattern followed is 6 7=137 9=16So,8 4=12

Ans 2:

Class : Class 6
option B

Ans 3:

Class : Class 7
i.e. 6 plus 7 = 13 and 9 plus 7 = 16 . SO, 8 plus 4 is 12.

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Subject :NSO    Class : Class 8

Air pollutants are harmful to living things. Which of the following is/are their harmful effect(s)?
(i) They form acid rain.
(ii) They cause breathing problems in humans.
(iii) They interfere with photosynthesis in plants.
(iv) They result in the depletion of ozone layer.

A (i) only
B (i) and (ii) only
C (i), (ii) and (iii) only
D (i), (ii), (iii) and (iv)


It is because acid rain is caused by sulphur dioxide and nitrogen dioxide. Breathing problems are caused by various kinds of pollutants. Dust particles interfere with photosynthesis in plants. Chloro-fluoro carbons or CFCs result in the depletion of ozone layer.

Ans 1:

Class : Class 7
Please explain

Ans 2:

Class : Class 9
i dont understand how ?

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Subject :NSO    Class : Class 7

Ans 1:

Class : Class 7

Ans 2:

Class : Class 8
option b

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Subject :NSO    Class : Class 4

Ans 1:

Class : Class 5
answer is a because when the ice melts it becomes warmer and changes into liqiud

Ans 2:

Class : Class 6
C

Ans 3:

Class : Class 9
C

Ans 4:

Class : Class 4
A

Ans 5:

Class : Class 6
C

Ans 6:

Class : Class 9
A IS THE ANSWER

Ans 7:

Class : Class 6
option A

Ans 8:

Class : Class 4
A

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Subject :NSO    Class : Class 3

Ans 1:

Class : Class 8
The correct answer is A

Ans 2:

Class : Class 7
The correct answer is A only.

Ans 3:

Class : Class 3
A

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Subject :NSO    Class : Class 8

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Subject :NSO    Class : Class 8

Ans 1:

Class : Class 8

Ans 2:

Class : Class 7
I'm not sure what the answer is in this one, as the correct answer and the solution are mismatched.

Ans 3:

Class : Class 8
According to Faraday's right hand rule, electricity flowing from point A to B generates a magnetic field around the wire moving from right to left (above the wire), and left to right (below the wire). Due to the compass being above the wire (according to the question), the compass needle must be influenced by the magnetic field, such that it points towards the right; i.e. the needle points in a direction from left to right. Thus, I opine that option (A) is the correct answer, not option (D). As there is an electric current, there must be a magnetic field, and thus there must be a deflection in the compass, which excludes option (D) entirely.

Ans 4:

Class : Class 8

Ans 5:

Class : Class 9

Ans 6:

Class : Class 9

Ans 7:

Class : Class 8
The solution says that the answer is supposed to be d but according to the explanation given the answer seems to be a. Please explain.

Ans 8:

Class : Class 8
It’s A . The question uses Maxwell’s right thumb rule.

Ans 9:

Class : Class 5
The *solution* and the *option* mismatch.

Ans 10:

Class : Class 8
should be a

Ans 11:

Class : Class 8

Ans 12:

Class : Class 10
The answer is Option A

Ans 13:

Class : Class 8
It should be A...

Ans 14:

Class : Class 10

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Subject :NSO    Class : Class 7

Ans 1:

Class : Class 7
this q didnt come

Ans 2:

Class : Class 8
Answer is option a as decomposition of dead matter of plant and animal by animals which gives nutrients to plants

Ans 3:

Class : Class 6
this question did not come in the question paper,when i was solving

Ans 4:

Class : Class 9
this question did not come in the question paper,when i was solving

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