National Science Olympiad Forum By SOF Olympiad Trainer - Page 131

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Subject :NSO    Class : Class 5

Ans 1:

Class : Class 5
EARTH QUACK

Ans 2:

Class : Class 5
Earthquake

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Subject :NSO    Class : Class 1

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Subject :NSO    Class : Class 3

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Subject :NSO    Class : Class 3

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Subject :NSO    Class : Class 9

Read the given statements and mark the correct option.
Statement 1 : Solid CO2 changes its state when exposed to air.
Statement 2 : CO2 undergoes sublimation.

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 and statement 2 is false.
D Both statements 1 and 2 are false.


CHanges its state is not explaned

Ans 1:

Class : Class 9
very true

Ans 2:

Class : Class 9
Option A - Both statements 1 and 2 are true and statement 2 is the correct explanation of statement 1. Because, when solid CO2 is exposed to air it changes into gaseous state i.e. it undergoes "SUBLIMATION". Therefore option A is correct.....

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Subject :NSO    Class : Class 1

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Subject :NSO    Class : Class 5

Ans 1:

Class : Class 6
P shows head Q show cerebrum R shows cerebellum and S shows medulla oblongata . Hence b is the correct Answer

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Subject :NSO    Class : Class 1

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Subject :NSO    Class : Class 1

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Subject :NSO    Class : Class 1

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