National Science Olympiad Forum By SOF Olympiad Trainer

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Subject :NSO    Class : Class 3

Ans 1:

Class : Class 3
is it option C ?

Ans 2:

Class : Class 3
D

Ans 3:

Class : Class 3
d

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Subject :NSO    Class : Class 8

Ms. Rashmita, a science teacher has set up an experiment as shown in the figure.

Which of the following represent the correct observations?
(i) Both the metal strips dissolve in beaker II.
(ii) Colour change is observed in beaker I.
(iii) No reaction takes place in beaker III.
(iv) Fe strip will dissolve faster in beaker I.
(v) Reaction occurs in beaker III but no colour change is observed.

A (iii) and (iv) only
B (i) and (iii) only
C (ii) and (v) only
D None of these


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Subject :NSO    Class : Class 5

Ans 1:

Class : Class 5

Ans 2:

Class : Class 6
Why will it be D? It should be C, because the Vaseline blocks the stomata of the leaves, and thus blocks the surface for transpiration, so water droplets will not appear on those leaves, but the uncovered leaves were not stained or covered with anything, so the transpiration process in those leaves should stay normal.

Ans 3:

Class : Class 6
Ans is C because like humans, plants also sweat. This is called transpiration.

Ans 4:

Class : Class 5

Ans 5:

Class : Class 5
SOF, Isnt the answer C?

Ans 6:

Class : Class 5

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Subject :NSO    Class : Class 7

Ans 1:

Class : Class 7
D

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Subject :NSO    Class : Class 3

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Subject :NSO    Class : Class 7

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Subject :NSO    Class : Class 8

Ans 1:

Class : Class 8
A substance which constantly gets accumulated in any organism of the food chain gets amplified highest in the topmost predator.This is a rule that can be observed in each and every case of bioamplification in an food web or chain. As the golden crowned kinglet is the topmost predator, option a is correct.

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Subject :NSO    Class : Class 7

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Subject :NSO    Class : Class 8
YES

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Subject :NSO    Class : Class 6

Ans 1:

Class : Class 6
The action not fact of making something smaller, degree or size

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