National Science Olympiad Forum By SOF Olympiad Trainer - Page 49

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Subject :NSO    Class : Class 5

The population of animal P in a certain community was constant until a population of animal Q was subsequently introduce into that community. The interaction between the two populations is represented in the given graph. Which of the following can be inferred from the given graph?


A Q could be a carnivore who is the predator of P who could be a herbivore or a carnivore.
B P could be a herbivore who feeds on some specific plants whereas Q could be an omnivore who not only feeds on those specific plants but also feeds on P.
C Q could be an exotic animal species which competitively drove out the entire population of animal species which is the only prey of P.
D All of these


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Subject :NSO    Class : Class 6

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Subject :NSO    Class : Class 5

Read the given statements and select the correct option regarding them.
Statement 1: Digestion and blood circulation are some voluntary actions of our body.
Statement 2: Voluntary actions are the actions which are not under human control.

ABoth statements 1 and 2 are correct and statement 2 is the correct explanation of statement 1.
BBoth statements 1 and 2 are correct but statement 2 is not the correct explanation of statement 1.
CStatement 1 is true but statement 2 is false.
DBoth statements 1 and 2 are false.


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Subject :NSO    Class : Class 7

Ans 1:

Class : Class 6

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Subject :NSO    Class : Class 8

Ans 1:

Class : Class 8

Ans 2:

Class : Class 8
please explain in little more detail if possible

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Subject :NSO    Class : Class 7

Ans 1:

Class : Class 7

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Subject :NSO    Class : Class 7

Ans 1:

Class : Class 8

Ans 2:

Class : Class 8
Wrong in previous paper same question answer was gifen as option A

Ans 3:

Class : Class 8

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Subject :NSO    Class : Class 6

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Subject :NSO    Class : Class 7

Ans 1:

Class : Class 8
C

Ans 2:

Class : Class 8
C

Ans 3:

Class : Class 8
C

Ans 4:

Class : Class 8
C

Ans 5:

Class : Class 8
C

Ans 6:

Class : Class 8
C

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Subject :NSO    Class : Class 8

What will happen if you keep a solution of copper sulphate in an iron container for a few days? What is the reason for your observation?

A The surface of iron container will develop a green layer due to corrosion caused by copper sulphate.
B Copper metal will be deposited in iron container since copper is more reactive than iron.
C Nothing will happen since no reaction takes place between copper sulphate and iron.
D Holes will be formed in the container since iron is more reactive than copper hence iron displaces copper from a solution of copper sulphate.


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