National Science Olympiad Forum By SOF Olympiad Trainer

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Subject :NSO    Class : Class 7

Ans 1:

Class : Class 7
d

Ans 2:

Class : Class 7
B

Ans 3:

Class : Class 7
OPTION B IS RIGHT

Ans 4:

Class : Class 8
OPTION D) IS CORRECT AS WATER IS INEXHAUSTIBLE,FOREST IS EXHAUSTIBLE,METAL IS RECYCLABLE. AND FOSSIL FUEL CANNOT BE RECYCLED AND IT TAKES MILLIONS OF YEARS TO FORM

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Subject :NSO    Class : Class 8

Consider the given statements and select the correct option which correctly identifies true (T) and false (F).
(i) When a body is in steady motion on a surface, the force of friction is dynamic friction.
(ii) The force of friction between two bodies always acts parallel to the surface in contact with each other.
(iii) It is easier to push a lawn roller than to pull.
(iv) Limiting friction is greater than sliding friction.

(i) (ii) (iii) (iv)
A T F T F
B F T F T
C T T T F
D T T F T


Ans 1:

Class : Class 9
B

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Subject :NSO    Class : Class 4

Ans 1:

Class : Class 4
A

Ans 2:

Class : Class 6
A

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Subject :NSO    Class : Class 4

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Subject :NSO    Class : Class 4

Match the column I with column II and select the correct option.

Column I Column II
(Causes of soil erosion) (Methods of soil conservation)
a. Running water carries
the topsoil with it
1. Embankments
b. Strong winds blow away
humus-rich topsoil
2. Wind breaks
c. Indiscriminate cutting of trees 3. Afforestation
4. Terrace farming


A a-1, 3; b-2; c-4
B a-2, 4; b-1; c-3
C a-2; b-1, 3; c-4
D a-1, 4; b-2; c-3


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Ans 1: (Master Answer)

Class : Class 1
The correct answer is D.

Ans 2:

Class : Class 5
Can you tell the answer of this question

Ans 3:

Class : Class 5

Ans 4:

Class : Class 5
Dear Admin from revise , kindly share solution / reasoning to this answer.

Ans 5:

Class : Class 5
Plz explain

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Subject :NSO    Class : Class 4

Ans 1:

Class : Class 4
Very nice

Ans 2:

Class : Class 3
Oh I didn’t realise

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Subject :NSO    Class : Class 7

Priyanka took a destarched potted plant and set up an experiment as shown in the figure. She left the plant in sunlight for few hours and then tested the leaves X and Y for starch. Leaf X did not give starch test while leaf Y showed presence of starch.

What is proved by this experiment?

A Chlorophyll is necessary for photo-synthesis.
B Carbon dioxide is necessary for photo-synthesis.
C Light is necessary for photosynthesis.
D Oxygen is given out during photo-synthesis.


oohhhhhhk

Ans 1:

Class : Class 8
b is correct

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Subject :NSO    Class : Class 3

Ans 1:

Class : Class 3
B

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Subject :NSO    Class : Class 5

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Subject :NSO    Class : Class 5

Ans 1:

Class : Class 2

Ans 2:

Class : Class 5

Ans 3:

Class : Class 5
any option is silly except for none of these it made me laugh

Ans 4:

Class : Class 7
none of the above

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