National Science Olympiad Forum By SOF Olympiad Trainer - Page 299

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Subject :NSO    Class : Class 6

Ans 1:

Class : Class 6
Both I and IV are incorrect. So, the answer is none of the above.

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Subject :NSO    Class : Class 4

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Subject :NSO    Class : Class 3

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Class : Class 5
A is the answer

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Subject :NSO    Class : Class 4

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Subject :NSO    Class : Class 5

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Subject :NSO    Class : Class 4

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Subject :NSO    Class : Class 5

Ans 1:

Class : Class 5
mount rushmore is made of granite

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Subject :NSO    Class : Class 9

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Subject :NSO    Class : Class 8

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Class : Class 8

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Class : Class 8

Ans 3:

Class : Class 8
As said in the solution, velocity of sound increases with increase in humidity.Also, the 2nd statement is correct, since the velocity of sound is inversely proportional to the density in the medium. Hence, statement 1 is false, while statement 2 is true. The answer should be Option D. SOF, PLEASE RECTIFY ALL THESE ERRORS.

Ans 4:

Class : Class 8

Ans 5:

Class : Class 8
The correct answer would be B only because due to high humidity, particles would be closer to each other, which would cause the soundwave to propagate more easily, as it travels fastest in solids. Though the reason is correct in itself it is not the the proper reason for the assertion as the correct reason should be due to the closeness of the particles.

Ans 6:

Class : Class 9
it should be c

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Subject :NSO    Class : Class 8

Ans 1:

Class : Class 7
There is a grammatical error in this question, which threw me off.

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Class : Class 8
I agree. Statement two of the passage has a grammatical error, instead of the verb 'measures', it should be 'measure', otherwise subject-verb agreement is not achieved, and literary sense is not maintained.

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Class : Class 5
Measures ki jagah it shoud be measure , english

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