National Science Olympiad Forum By SOF Olympiad Trainer

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Subject :NSO    Class : Class 7

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Subject :NSO    Class : Class 4

Ans 1:

Class : Class 4
A

Ans 2:

Class : Class 4

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Subject :NSO    Class : Class 8

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Subject :NSO    Class : Class 7

Priya categorised animals on the basis of their respiratory organs. She made three groups of four organisms each. By mistake, she put one wrong member in each group. Identify it and select the correct option.
Group I : Ladybird, Silverfish, King crab, Cockroach
Group II : Arowana, Jellyfish, Sea-horse, Climbing perch
Group III : Krait, Stork, Porcupine, Gambusia

A Silverfish in group I should be interchanged with jellyfish in group II.
B Climbing perch in group II should be replaced with pangolin.
C Ladybird in group I should be interchanged with Gambusia in group III.
D King crab in group I should be replaced with locust.


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Subject :NSO    Class : Class 4

Ans 1:

Class : Class 4
Answer is option A. MUFFLER

Ans 2:

Class : Class 4
Answer is a

Ans 3:

Class : Class 4
Answer is option A.

Ans 4:

Class : Class 4
Answer is option A.

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Subject :NSO    Class : Class 7

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Subject :NSO    Class : Class 6

Ans 1:

Class : Class 7
Answer is A Dolphin is a mammal which breaths through the lungs. Whales also have the same system Whereas, earthworm breathes through the skin.

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Subject :NSO    Class : Class 7

Read the given statements and mark the correct option.
Statement 1 : The ash produced by burning magnesium when dissolved in water turns China rose indicator dark pink.
Statement 2 : The ash formed is MgO which when dissolved in water forms an acidic solution.

A Both statements 1 and 2 are true and statement 2 is the correct explanation of statement 1.
B Both statements 1 and 2 are true but statement 2 is not the correct explanation of statement 1.
C Statement 1 is true but statement 2 is false.
D Both statements 1 and 2 are false.


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Subject :NSO    Class : Class 6

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Subject :NSO    Class : Class 8

Read the given statements and select the correct option.
Statement 1: Petrol condenses near the top of the fractionating column while diesel oil near the middle of the column.
Statement 2: Petrol is more volatile than diesel oil.

A Both statements 1 and 2 are true and statement 2 is the correct explanation of statement 1.
B Both statements 1 and 2 are true but statement 2 is not the correct explanation of statement 1.
C Statement 1 is true and statement 2 is false.
D Both statements 1 and 2 are false.


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