National Science Olympiad Forum By SOF Olympiad Trainer - Page 369

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Subject :NSO    Class : Class 6

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Subject :NSO    Class : Class 8

The force required to start an object sliding across a uniform horizontal surface is larger than the force required to keep the object sliding at a constant velocity. The magnitudes of the required forces are different in these situations because the force of kinetic friction

AIs greater than the force of static friction.
BIs less than the force of static friction.
CIncreases as the speed of the object relative to the surface increases.
DDecreases as the speed of the object relative to the surface increases.


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Subject :NSO    Class : Class 6

Ans 1:

Class : Class 10
option-c

Ans 2:

Class : Class 6
Option C It is because all of them lay eggs.

Ans 3:

Class : Class 10
because all lay eggs

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Subject :NSO    Class : Class 7

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Subject :NSO    Class : Class 4

Ans 1:

Class : Class 6

Ans 2:

Class : Class 4
A

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Subject :NSO    Class : Class 8

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Subject :NSO    Class : Class 7

Priya categorised animals on the basis of their respiratory organs. She made three groups of four organisms each. By mistake, she put one wrong member in each group. Identify it and select the correct option.
Group I : Ladybird, Silverfish, King crab, Cockroach
Group II : Arowana, Jellyfish, Sea-horse, Climbing perch
Group III : Krait, Stork, Porcupine, Gambusia

A Silverfish in group I should be interchanged with jellyfish in group II.
B Climbing perch in group II should be replaced with pangolin.
C Ladybird in group I should be interchanged with Gambusia in group III.
D King crab in group I should be replaced with locust.


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Subject :NSO    Class : Class 4

Ans 1:

Class : Class 8
Answer is a

Ans 2:

Class : Class 5
answer is a

Ans 3:

Class : Class 8
Answer is option A.

Ans 4:

Class : Class 8
Answer is option A.

Ans 5:

Class : Class 8
Answer is option A. MUFFLER

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Subject :NSO    Class : Class 7

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Subject :NSO    Class : Class 6

Ans 1:

Class : Class 7
Answer is A Dolphin is a mammal which breaths through the lungs. Whales also have the same system Whereas, earthworm breathes through the skin.

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