National Science Olympiad Forum By SOF Olympiad Trainer

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Subject :NSO    Class : Class 10

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Subject :NSO    Class : Class 4

Ans 1:

Class : Class 4

Ans 2:

Class : Class 5

Ans 3:

Class : Class 4
A) Colder, Warmer

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Subject :NSO    Class : Class 7

Ans 1:

Class : Class 7
A

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Subject :NSO    Class : Class 3

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Subject :NSO    Class : Class 6

Small populations of three types of organisms X, Y and Z were kept in captivity. Plenty of plants were present in that area.
The change in the population of these organisms with time was plotted in the graph as shown here.

Which of the following conclusion is incorrect regarding their eating habits?

A X could be a carnivore that feeds on Z but not on Y.
B Both X and Y could be herbivores and Z could be a carnivore whose population declines as it does not prey on both X and Y.
C If X and Y are herbivores, then X has higher reproductive potential than Y.
D None of these


Ans 1:

Class : Class 6
please provide the solution

Ans 2:

Class : Class 6
Please give solution of this question.............

Ans 3:

Class : Class 6
how is the answer D???????????

Ans 4:

Class : Class 6
please provide solution for the question

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Subject :NSO    Class : Class 3

Ans 1:

Class : Class 3
Its A

Ans 2:

Class : Class 5
Answer can be both A and D

Ans 3:

Class : Class 4
IT IS C

Ans 4:

Class : Class 3
how

Ans 5:

Class : Class 3

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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 4

Ans 1: (Master Answer)

Class : Class 1
The correct answer is A.

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Subject :NSO    Class : Class 9

Ans 1:

Class : Class 9
the wave length in air by v=n.lemda, so 350 = 700 . wavelength so wave length = 0.5 m Now when it enters in brass, v = 3500 m/s, so new wavelength = 3500 / 700 = 5 m. So answer is option A, i.e. wavelength will be increased by a factor of 10.

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Subject :NSO    Class : Class 9

Ans 1:

Class : Class 9
lets go column wise(up to down) in the first one, the topmost value is 7. if we multiply this value with the second last value(i.e. 3), we get 21. now we must add this 21 with the second term(i.e. 8), and we get the last term that is 29. follow the same logic

Ans 2:

Class : Class 9

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