National Science Olympiad Forum By SOF Olympiad Trainer - Page 85

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Subject :NSO    Class : Class 6

Ans 1:

Class : Class 8
please clarify this question

Ans 2:

Class : Class 7
please clarify the answer

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Subject :NSO    Class : Class 8

Ans 1:

Class : Class 8
No Solution !

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Subject :NSO    Class : Class 7

Refer to the given paragraph and select the correct option regarding V-Z.
When we take in oxygen, the ribs move ___V___ and ___W___ and diaphragm becomes ___X___ . This ___Y___ the volume of the thoracic cavity and the air pressure inside the lungs ___Z___ .

AV - Upward; W - Outward; X - Flat; Y - Increases; Z - Decreases
BV - Downward; W - Inward; X - Curved; Y - Decreases; Z - Increases
CV - Upward; W - Outward; X - Flat; Y - Decreases; Z - Increases
DV - Downward; W - Inward; X - Curved; Y - Increases; Z - Decreases


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Subject :NSO    Class : Class 7

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Subject :NSO    Class : Class 5

Ans 1:

Class : Class 7

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Subject :NSO    Class : Class 7

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Subject :NSO    Class : Class 3

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Subject :NSO    Class : Class 2

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Subject :NSO    Class : Class 6

Nitu mixed some iron filings with sulphur powder in a China dish. She heated the contents of China dish. What did she observe during the experiment?

A There was no difference in the contents of China dish before and after heating.
B Before heating, iron filings and sulphur powder could be seen separately but after heating the contents became black.
C Before heating, the iron filings and sulphur powder could not be seen separately.
D Before heating, the contents were black and after heating, iron filings and sulphur could be seen separately.


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Subject :NSO    Class : Class 5

Ans 1:

Class : Class 6

Ans 2:

Class : Class 5
The answer is option (c)

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