National Science Olympiad Forum By SOF Olympiad Trainer - Page 412

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Subject :NSO    Class : Class 5

Ans 1:

Class : Class 8

Ans 2:

Class : Class 8
the correct answer will be both option b and d

Ans 3:

Class : Class 5
Correct answer is D not B!

Ans 4:

Class : Class 7

Ans 5:

Class : Class 8
correct answer should be D

Ans 6:

Class : Class 6
none of the options are correct.

Ans 7:

Class : Class 9
Pls explain

Ans 8:

Class : Class 5
D is correct

Ans 9:

Class : Class 8
None of the options are correct

Ans 10:

Class : Class 6
I DISCUSSED A LOT .SEARCHED ON GOOGLE. MALARIA IS A NON COMMUNICABLE DISEASE.PLEASE explain IT

Ans 11:

Class : Class 3
none of the options are correct

Ans 12:

Class : Class 7

Ans 13:

Class : Class 8
no option is correct

Ans 14:

Class : Class 7
D is the correct answer

Ans 15:

Class : Class 3
D is the correct answer

Ans 16:

Class : Class 5

Ans 17:

Class : Class 5
NONE OF THE OPTIONS ARE CORRECT

Ans 18:

Class : Class 5
no option is corect,it is d with the diseases interchanged

Ans 19:

Class : Class 8
Option D is the correct answer

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Subject :NSO    Class : Class 5

Ans 1:

Class : Class 6

Ans 2:

Class : Class 7

Ans 3:

Class : Class 3
ok

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Subject :NSO    Class : Class 6

Refer to the given paragraph and answer the following question.
Plant P is the only source of food for the caterpillars of a butterfly species, Q. Plant P depends on the adults of the butterfly species Q for pollination. Infact, animal Q is the only pollinator of plant P in nature. Animal R feeds exclusively on the caterpillars of the butterfly species, Q. Animal R in turn is the prey of animal S.
Which of the following is likely to happen if animal S is hunted to extinction?

A Animal R will continuously feed on animal Q which may lead to coextinction of both P and Q with time.
B The populations of both animals Q and R will increase, however the population of plant P will decrease with time.
C Population of animal R will increase while population of animal Q will decrease with time.
D Both (A) and (C)


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Subject :NSO    Class : Class 3

Ans 1:

Class : Class 3
D)

Ans 2:

Class : Class 3
D

Ans 3:

Class : Class 3
when we put some water in a soil surface, we cold see small bubbles on the soil surface.

Ans 4:

Class : Class 4

Ans 5:

Class : Class 3
If we in a soil sample, we would see small bubbles on the soil sample.

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Subject :NSO    Class : Class 3

Ans 1:

Class : Class 4

Ans 2:

Class : Class 3
c

Ans 3:

Class : Class 3
Hitting the cricket ball with a bat to make a run.

Ans 4:

Class : Class 4
c as in a b d force pull is used

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Subject :NSO    Class : Class 6

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Subject :NSO    Class : Class 6

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Subject :NSO    Class : Class 4

Ans 1:

Class : Class 5
(A) cannot be the right answer as once the water vaporizes, there is no scope for sedimentation. (B) cannot be the right answer as once the mixture is filtered, the sand shall be collected on the filter paper while the clean water shall be collected in a beaker.Evaporation is not required. The answer is (C) because sand is heavier than water and shall settle down at the bottom of the beaker.This process is called sedimentation.Subsequently,the clear water from the top can be decanted out. (D) cannot be the right answer as once decantation is done, the clear filtrate shall be left over and filtration is not required.

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Subject :NSO    Class : Class 7

Ans 1:

Class : Class 7
It is correct as vaporisation increases with increased wind speed

Ans 2:

Class : Class 8

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Subject :NSO    Class : Class 7

Ans 1:

Class : Class 8
ans is D

Ans 2:

Class : Class 8
option d .....

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