National Science Olympiad Forum By SOF Olympiad Trainer

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Subject :NSO    Class : Class 4

Ans 1: (Master Answer)

Class : Class 1
The correct answer is B.

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Subject :NSO    Class : Class 4

Ans 1: (Master Answer)

Class : Class 1
The correct answer is D.

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Subject :NSO    Class : Class 7

Ans 1:

Class : Class 7
B

Ans 2:

Class : Class 7
Liquid oxygen is impure so ans is B

Ans 3:

Class : Class 7
B

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Subject :NSO    Class : Class 3

Ans 1: (Master Answer)

Class : Class 1
The correct answer is B.

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Subject :NSO    Class : Class 5

X is a plant whose seeds are dispersed by wind whereas Y is a plant whose seeds are dispersed by animals. Which of the following holds true regarding plants X and Y?

AThe seeds of plant X may have either wings or hair like structures.
BThe fruits of plant Y may or may not be edible.
CThe seeds of plant X are dispersed in a small radius around parent plant whereas seeds of plant Y are dispersed to very far off places.
DBoth A and B


Ans 1:

Class : Class 6
It should be opt. D

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Subject :NSO    Class : Class 6

Ans 1:

Class : Class 9
the answer is d (all of these) as the mosquitis will increase with time the non - biodegradable will be be constent the biodegraedable wate will decrease as the misquotes will eat it

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Subject :NSO    Class : Class 5

Ans 1:

Class : Class 5

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Subject :NSO    Class : Class 5

The diagram shows three people taking a ride at a fair as shown here. As the boat swings back and forth, which of the following statement(s) is/are true about the three persons, X, Y, and Z ?

(i) X experiences the most potential energy when the boat swings left.
(ii) Z experiences the most potential energy when the boat swings right.
(iii) Y experiences the most potential energy as the boat passes the rest position during swinging.

A(i) only
B(ii) only
C(i) and (ii) only
D(i), (ii) and (iii)


can somebody give me the explanations ?

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Subject :NSO    Class : Class 9

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Subject :NSO    Class : Class 7

Read the given statements.
(i) Paramecium has stiff hair-like structures called ____ all over its body, which are used for ____.
(ii) Hydra has a number of ____ around its mouth, that entangle small aquatic animals and kill them with their ____cells.
(iii) Frog uses its long, sticky ____ to catch insects.
(iv) Mosquito sucks up the blood of animals with its ____.
Select the option which correctly fills the blanks in any two of these statements.

A (ii) - Cilia, Absorptive;(iii) - Hand
B (i) - Tentacles, Ingestion; (iv) - Feeding tube
C (i) - Cilia, Ingestion; (ii) - Tentacles, Stinging
D (iii) - Tongue; (iv) - Pseudopodia


what is cilia absorptive cells in this question ?

Ans 1:

Class : Class 9
c is the correct option

Ans 2:

Class : Class 9
c is the correct option

Ans 3:

Class : Class 7
Hair like structure which helps in absorption

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