National Science Olympiad Forum By SOF Olympiad Trainer - Page 479

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Subject :NSO    Class : Class 8

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Subject :NSO    Class : Class 4

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Subject :NSO    Class : Class 4

Ans 1:

Class : Class 5
D is the correct answer

Ans 2:

Class : Class 5
Thanks Ashwak

Ans 3:

Class : Class 2
D is the answer because when we put talcum powder on the board, the carrom is easy to slip. Therefore, it reduces the force that keeps us from slipping while we are walking.

Ans 4:

Class : Class 9
I agree, D is the correct answer.

Ans 5:

Class : Class 4
Even I agree

Ans 6:

Class : Class 4
wrong none of these talcum powder makes the board slippery so it is easier to play so how won't it make us slip

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Subject :NSO    Class : Class 3

Ans 1:

Class : Class 3
Ussain Bolt

Ans 2:

Class : Class 3
Usain Bolt

Ans 3:

Class : Class 3
Ussain Bolt

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Subject :NSO    Class : Class 3

Ans 1:

Class : Class 5
d is the answer

Ans 2:

Class : Class 7
D

Ans 3:

Class : Class 3
B

Ans 4:

Class : Class 3
B

Ans 5:

Class : Class 5

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Subject :NSO    Class : Class 4

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Subject :NSO    Class : Class 6

Ans 1:

Class : Class 7

Ans 2:

Class : Class 8
asdfghjklz

Ans 3:

Class : Class 7
Answer A is correct

Ans 4:

Class : Class 6
wrong

Ans 5:

Class : Class 6

Ans 6:

Class : Class 6
answer should be a

Ans 7:

Class : Class 7
C

Ans 8:

Class : Class 6

Ans 9:

Class : Class 8
it is a!!!!

Ans 10:

Class : Class 6
asdfghjkl;

Ans 11:

Class : Class 6

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Subject :NSO    Class : Class 6

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Subject :NSO    Class : Class 6

Ans 1:

Class : Class 10
C,as the wheat plants decrease in number.

Ans 2:

Class : Class 6

Ans 3:

Class : Class 7
In a field research, some rats were kept in a wheat field. Their presence in the wheat field would affect the number of wheat plants over a certain period of time.Rats burrow in the soil of wheat field and cause damage to the crop roots. So, the number of wheat plants would fall over a period of time. Rats also feed on ripening ear heads and ripened grains. So, their population would increase fast. The more they are in number, the more damage they would cause to the plant roots, and the more grains they would eat.So, the number of wheat plants in the field would keep decreasing.The following graph would show the change in the number of wheat plants correctly:In the above graph, the number of wheat plants is constantly falling over a period of time. Hence, the right answer is Option C.

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Subject :NSO    Class : Class 5

Ans 1:

Class : Class 7
It will be option D. It will be D as it can be understood from the pictures that S is a room heater which is run by electric. Heat comes out of it. It is therefore used to keep our surroundings warm. Thank you .

Ans 2:

Class : Class 6
but others also produce heat energy?

Ans 3:

Class : Class 7

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