National Science Olympiad Forum By SOF Olympiad Trainer

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Subject :NSO    Class : Class 4

Ans 1:

Class : Class 4
D

Ans 2:

Class : Class 4
D

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Subject :NSO    Class : Class 7

Three similar light bulbs are connected to a constant voltage d.c supply as shown in the diagram. Each bulb operates at normal brightness and the ammeter (of negligible resistance) registers a steady current.

The filament of one of the bulbs breaks. What happens to the ammeter reading and to the brightness of the remaining bulbs?

Ammeter reading Bulb brightness
A Increase Increase
B Unchanged Unchanged
C Decrease Unchanged
D Decreases Decreases


The correct answer should be D because when current decreases,brightness also decreases

Ans 1:

Class : Class 7

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Subject :NSO    Class : Class 5

Ans 1:

Class : Class 6
non of these as all the options are true

Ans 2:

Class : Class 6
non of these as all the options are true

Ans 3:

Class : Class 5
A

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Subject :NSO    Class : Class 5

Ans 1:

Class : Class 5
answer is B. the main mineral present in this rock is quartz-sandstone sandstone can be found in the grid so it is the answer.

Ans 2:

Class : Class 6
the answer will be d as all are present in the grid

Ans 3:

Class : Class 5
D

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Subject :NSO    Class : Class 4

Ans 1:

Class : Class 4
Ans a because C is for tearing food D for grinding and B are not permanant

Ans 2:

Class : Class 4
A

Ans 3:

Class : Class 4

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Subject :NSO    Class : Class 6

Ans 1:

Class : Class 6
Easy

Ans 2:

Class : Class 6
D none of them

Ans 3:

Class : Class 7
answer is D

Ans 4:

Class : Class 6
D none of them

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Subject :NSO    Class : Class 4

Ans 1:

Class : Class 5
Drying

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Subject :NSO    Class : Class 9

Ans 1:

Class : Class 9
C

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Subject :NSO    Class : Class 4

Ans 1:

Class : Class 5
B-nymph

Ans 2:

Class : Class 4
B

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Subject :NSO    Class : Class 8

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