National Science Olympiad Forum By SOF Olympiad Trainer - Page 439

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Subject :NSO    Class : Class 6

Ans 1:

Class : Class 9
Loudspeakers use electromagnets.So,the answer should be (B)

Ans 2:

Class : Class 7
answer should be b

Ans 3:

Class : Class 6
Loud speakers use electromagnets as they dont need magnetic force when not in use so ans is B

Ans 4:

Class : Class 9
The answer is B as loudspeakers use electromagnets and the magnetic field isn't there always .

Ans 5:

Class : Class 10
Loudspeakers use electromagnets, so the answer is option B

Ans 6:

Class : Class 10
answer will be b as loudspeakers use electromagents

Ans 7:

Class : Class 9
loud speakers have both electromagnets and permanent magnets

Ans 8:

Class : Class 7
Loudspeakers use electromagnets.

Ans 9:

Class : Class 8
But all of them use permanent magnets...so D is correct

Ans 10:

Class : Class 9

Ans 11:

Class : Class 9
Loudspeakers use electromagnets so it should be answer b

Ans 12:

Class : Class 9

Ans 13:

Class : Class 9
they use both so the answer is d

Ans 14:

Class : Class 7
Don't loudspeakers use electromagnets?

Ans 15:

Class : Class 6
answer is B so obvious

Ans 16:

Class : Class 3
Loud speakers use permanent magnets

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Subject :NSO    Class : Class 6

Ans 1:

Class : Class 6
as only the option (D) will be magnetic and the SOFT IRON will act as a keepers

Ans 2:

Class : Class 6

Ans 3:

Class : Class 8

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Subject :NSO    Class : Class 5

Ans 1:

Class : Class 6
Ans should be A because tuemeric powder is solid and solids are incompressible. Liquids are also incompressible but the some of the liquid has gone above the end of the piston, which is inside the syringe. Gases are compressible, so the piston easily moves.

Ans 2:

Class : Class 8
The answer is B

Ans 3:

Class : Class 6
Well... I think the answer is B

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Subject :NSO    Class : Class 6

Ans 1:

Class : Class 7
its C acording to me

Ans 2:

Class : Class 6
c

Ans 3:

Class : Class 10
c is the answer

Ans 4:

Class : Class 10
solution?

Ans 5:

Class : Class 9

Ans 6:

Class : Class 8
How is it C!?

Ans 7:

Class : Class 6
can I have an explanation please....... plz...plz...plz...

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Subject :NSO    Class : Class 8

Ans 1:

Class : Class 8

Ans 2:

Class : Class 8
yes i think that opt C is correct

Ans 3:

Class : Class 8
The answer is C because the ray would refract and be parallel to incident ray. also the emergent ray cant appear behind the incident ray

Ans 4:

Class : Class 9
correct answer is C

Ans 5:

Class : Class 10
I too think correct option is C

Ans 6:

Class : Class 8
I too think the correct ans is C rather than A

Ans 7:

Class : Class 6
It is Option C only, as when light travels from denser to rarer medium, it bends away from normal

Ans 8:

Class : Class 8
Me too... I also think that the correct option will be C

Ans 9:

Class : Class 10
It's A.When light travels from a denser to rarer medium,it bends TOWARDS the normal(Check normal in solution).Hence,answer is A.

Ans 10:

Class : Class 8
correct answer is C as the ray would refract if its passing from a rarer to denser medium.

Ans 11:

Class : Class 10
answer is C

Ans 12:

Class : Class 6
After checking the Snell's law, I found the answer to be C...But it says the correct answer is A

Ans 13:

Class : Class 8

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Subject :NSO    Class : Class 4

Ans 1:

Class : Class 5

Ans 2:

Class : Class 4
c

Ans 3:

Class : Class 4

Ans 4:

Class : Class 8
C

Ans 5:

Class : Class 4

Ans 6:

Class : Class 4
Shuchi: P is an organism which has three stages in its life cycle. The young one is very similar to its parent.Ritu: Q is an organism which has four stages in its life cycle. The young one is very different from its parent.Now, let’s see which of the following options gives the right identities of Organisms P and Q:

Ans 7:

Class : Class 4

Ans 8:

Class : Class 4
Ans: C

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Subject :NSO    Class : Class 4

Ans 1:

Class : Class 4
briany

Ans 2:

Class : Class 5
D

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Subject :NSO    Class : Class 3

Ans 1:

Class : Class 6
b

Ans 2:

Class : Class 3
B

Ans 3:

Class : Class 6

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Subject :NSO    Class : Class 3

Ans 1:

Class : Class 7
The correct answer is B.

Ans 2:

Class : Class 3
B is the right answer.

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Subject :NSO    Class : Class 3

Ans 1:

Class : Class 6
B . (2.1cm)

Ans 2:

Class : Class 6
B . (2.1cm)

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