National Science Olympiad Forum By SOF Olympiad Trainer

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Subject :NSO    Class : Class 4

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Subject :NSO    Class : Class 7

Ans 1:

Class : Class 7
A The average kinetic energy of the molecules

Ans 2:

Class : Class 7
A: "The average kinetic energy of the molecules" is the right answer.

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Subject :NSO    Class : Class 3

Ans 1:

Class : Class 3
i got 5/10

Ans 2:

Class : Class 3
Correct answer is D

Ans 3:

Class : Class 3
correct answer is d]

Ans 4:

Class : Class 4
Correct answer=D

Ans 5:

Class : Class 8
I got 10/10

Ans 6:

Class : Class 4
Animals that gnaw have very sharp front teeth and bite repeatedly and chew it hard so, the correct answer is option (D).

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Subject :NSO    Class : Class 5

Ans 1:

Class : Class 5

Ans 2:

Class : Class 6

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Subject :NSO    Class : Class 7

Mr Khanna had a pond in his garden, filled with all kinds of aquatic plants. He wanted to prevent mosquitoes from breeding in the pond without harming the plants in any way. He could __________.
(i) Add salt into the water
(ii) Add some goldfish into the pond
(iii) Spray a film of oil on the surface of the pond

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


B is correct. As goldfish eat the mosquitoe's eegs

Ans 1:

Class : Class 7
it should be not be c as oil can block the gas exchange for plants and can effect the plant

Ans 2:

Class : Class 7

Ans 3:

Class : Class 7
I agree with you Prachi

Ans 4:

Class : Class 7
Correct option should be c

Ans 5:

Class : Class 7
i hate sof

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Subject :NSO    Class : Class 4

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Subject :NSO    Class : Class 8

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Subject :NSO    Class : Class 4

Ans 1:

Class : Class 4
A

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Subject :NSO    Class : Class 9

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Subject :NSO    Class : Class 4

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