National Science Olympiad Forum By SOF Olympiad Trainer - Page 38

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Subject :NSO    Class : Class 7

Which of the following statements is/are incorrect?
I. Solubility of gases in water increases with an increase in the temperature.
II. Salt is obtained from sea water by the evaporation process.
III. Winnowing is used to separate lighter components of a mixture from the heavier ones by wind or blowing air.
IV. Distillation process involves the separation of insoluble solids from liquids.

AI, II and IV only
BI and IV only
CII and III only
DI and III only


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Subject :NSO    Class : Class 7

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Subject :NSO    Class : Class 7

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Subject :NSO    Class : Class 7

Read the following statements carefully and select the correct option.
Statement 1 : If a body starts moving and reaches the same initial position, then its displacement is zero.
Statement 2 : The quantity displacement has only magnitude.

ABoth statements 1 and 2 are true and statement 2 is the correct explanation of statement 1.
BBoth statements 1 and 2 are true but statement 2 is not the correct explanation of statement 1.
CStatement 1 is true and statement 2 is false.
DBoth statements 1 and 2 are false.


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Subject :NSO    Class : Class 6

Read the following statements carefully and select the correct option.
Statement 1 : The poles of a magnet can be separated.
Statement 2 : When a bar magnet is broken, each piece will have only one pole and its magnetism is enhanced.

ABoth statements 1 and 2 are true and statement 2 is the correct explanation of statement 1.
BBoth statements 1 and 2 are true but statement 2 is not the correct explanation of statement 1.
CStatement 1 is true and statement 2 is false.
DBoth statements 1 and 2 are false.


ans is wrong

Ans 1:

Class : Class 7
even if i raise a error they do not do anything

Ans 2:

Class : Class 6
it should be Dpls fix it

Ans 3:

Class : Class 6
YEAH SAME PROBLEM HERE... SOF, NEVER EXPECTED SUCH MISTAKE FROM SUCH A LARGE COMPANY...

Ans 4:

Class : Class 6
I agree with pari, Sof please fix this, I know sof never fixes it but please this is ruining your own company's name.

Ans 5:

Class : Class 7
it should be d

Ans 6:

Class : Class 6
How is it Answer A? If a magnet is broken into two, each piece will have its own poles...not only one pole.

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Subject :NSO    Class : Class 4

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Subject :NSO    Class : Class 9

Ans 1:

Class : Class 9

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Subject :NSO    Class : Class 9

Read the given statements and select the correct option.
Statement 1 : The forces of action and reaction always appear due to actual physical contact of two bodies.
Statement 2 : A particle can move only under the action of a force.

A Both statements 1 and 2 are true and statement 2 is the correct explanation of statement 1.
B Both statements 1 and 2 are true but statement 2 is not the correct explanation of statement 1.
C Statement 1 is true but statement 2 is false.
D Both statements 1 and 2 are false.


Ans 1:

Class : Class 9

Ans 2:

Class : Class 9

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Subject :NSO    Class : Class 6

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Subject :NSO    Class : Class 10

Ans 1:

Class : Class 10

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