National Science Olympiad Forum By SOF Olympiad Trainer

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Subject :NSO    Class : Class 6

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Subject :NSO    Class : Class 7

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Subject :NSO    Class : Class 7

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Subject :NSO    Class : Class 9

Which of the following is not correct?

A If we drop a 10 lb iron ball and 1 lb aluminium ball from the top of a high platform inside a mine, then both will reach the floor at the same time.
B The gravitational force of attraction between the two bodies increases when their masses are increased and distance is reduced.
C We do not observe small objects moving towards each other because frictional force balances the gravitational pull.
D When a body is thrown up, the acceleration due to gravity at the topmost point is zero because velocity of the body is zero.


Shouldn't it be C

Ans 1:

Class : Class 9
the right answer is C.

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Subject :NSO    Class : Class 8

Ans 1:

Class : Class 9
Correct answer not available upper scale will show weight of bottom scale as well

Ans 2:

Class : Class 8
I don't think there is a correct answer because the force exerted by the upper spring balance will resist the reading on the lower balance for the Object

Ans 3:

Class : Class 9
upper 10 kg plus weight of bottom scale

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Subject :NSO    Class : Class 7

Ans 1:

Class : Class 7
B. Rainfall

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Subject :NSO    Class : Class 8

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Subject :NSO    Class : Class 7

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Subject :NSO    Class : Class 5

Ans 1:

Class : Class 5
ans is c

Ans 2:

Class : Class 5

Ans 3:

Class : Class 5
Answer is cHow can it be d?How can the birds have powerful tail?If they had, they wont be able to fly up in the sky with heavy bodies.

Ans 4:

Class : Class 6
guys how is it C ? has this not been taught to you in school?this is a simple no brainer question ,the right answer is d according to me .please revise it once

Ans 5:

Class : Class 5
C is the correct answer. Check solution

Ans 6:

Class : Class 5
ans is C

Ans 7:

Class : Class 5
Yes, Mannan. We can see that option (D) should be a suitable answer. Or not 😐

Ans 8:

Class : Class 4
ans is D

Ans 9:

Class : Class 5
ans c

Ans 10:

Class : Class 5

Ans 11:

Class : Class 5
The corect ans is C

Ans 12:

Class : Class 5
ans is c

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Subject :NSO    Class : Class 3

Ans 1:

Class : Class 4

Ans 2:

Class : Class 3
woodpecker

Ans 3:

Class : Class 4
woodpecker ?how?

Ans 4:

Class : Class 3
woodpecker

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