National Science Olympiad Forum By SOF Olympiad Trainer - Page 336

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Subject :NSO    Class : Class 8

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Subject :NSO    Class : Class 7

Ans 1:

Class : Class 6

Ans 2:

Class : Class 8

Ans 3:

Class : Class 7

Ans 4:

Class : Class 3

Ans 5:

Class : Class 6

Ans 6:

Class : Class 8

Ans 7:

Class : Class 6

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Subject :NSO    Class : Class 7

Sunil and Rohit start at one end of a street, the origin and run to the other end, then head back. On the way back, Sunil is ahead of Rohit. Which statement is correct about the distances run and the displacements from the origin before reaching the origin?

A Sunil has run a greater distance and his displacement is greater than Rohit’s.
B Rohit has run a greater distance and his displacement is greater than Sunil’s.
C Sunil has run a greater distance but his displacement is lesser than Rohit’s.
D Rohit has run a greater distance but his displacement is lesser than Sunil’s.


Ans 1:

Class : Class 8
tricky question

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Subject :NSO    Class : Class 6

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Subject :NSO    Class : Class 4

Ans 1:

Class : Class 6

Ans 2:

Class : Class 5
Can somebody tell? I don't have any idea

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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 3
HOW? Somebody pls help.

Ans 3:

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

Ans 4:

Class : Class 7

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Subject :NSO    Class : Class 3

Ans 1:

Class : Class 7
Correct answer=D

Ans 2:

Class : Class 7
Animals that gnaw have very sharp front teeth and bite repeatedly and chew it hard so, the correct answer is option (D).

Ans 3:

Class : Class 7
I got 10/10

Ans 4:

Class : Class 3
i got 5/10

Ans 5:

Class : Class 3
correct answer is d]

Ans 6:

Class : Class 3
Correct answer is D

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Subject :NSO    Class : Class 5

Ans 1:

Class : Class 6

Ans 2:

Class : Class 5

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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 4
I agree with you Prachi

Ans 2:

Class : Class 4
Ya this is not write

Ans 3:

Class : Class 4
i hate sof

Ans 4:

Class : Class 10
it should be not be c as oil can block the gas exchange for plants and can effect the plant

Ans 5:

Class : Class 7
Correct option should be c

Ans 6:

Class : Class 7
I agree with you Adwika

Ans 7:

Class : Class 4

Ans 8:

Class : Class 7
A: Because of the high salinity of the water, plants will die.B: Plants will have more CO2 and hence have a higher rate of photosynthesis.C: O2 and CO2 will stop dissolving in water, hence killing the plants.So best option is B.

Ans 9:

Class : Class 7

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Subject :NSO    Class : Class 4

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