National Science Olympiad Forum By SOF Olympiad Trainer - Page 248

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Subject :NSO    Class : Class 4

Ans 1:

Class : Class 7
A

Subject :NSO    Class : Class 5

Ans 1:

Class : Class 5
mount rushmore is made of granite

Subject :NSO    Class : Class 9

Ans 1:

Class : Class 9
c

Subject :NSO    Class : Class 8

Class : Class 8

Ans 2:

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.

Subject :NSO    Class : Class 8

Ans 1:

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

Ans 2:

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

Ans 3:

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.

Subject :NSO    Class : Class 8

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Subject :NSO    Class : Class 6

Ans 1: (Master Answer)

Class : Class 1

B

Stronger the magnet, wider would be the spread of its magnetic field, so it would attract objects from larger distance.Hence, the correct order for the magnets from strongest  to weakest magnetic field is given in option B.

Ans 2:

Class : Class 6

Subject :NSO    Class : Class 6

Ans 1: (Master Answer)

Class : Class 1

D

A periodic motion may or may not be oscillatory .For example , motion of earth about sun is periodic but not oscillatory.

During circular motion of an object , its direction of motion changes with time and hence the velocity.So,the acceleration of the object is non zero.

Aluminium is a good conductor of electricity .Hence, statement v is wrong.

Subject :NSO    Class : Class 5

Class : Class 7
* SOLUTION

Ans 2:

Class : Class 7
option C is correct. For explanation see explanation