National Science Olympiad Forum By SOF Olympiad Trainer - Page 499

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Subject :NSO    Class : Class 7

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Subject :NSO    Class : Class 6

Ans 1:

Class : Class 6
answer is B so obvious

Ans 2:

Class : Class 7
Loudspeakers use electromagnets.

Ans 3:

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

Ans 4:

Class : Class 7
answer should be b

Ans 5:

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

Ans 6:

Class : Class 5
Loud speakers use permanent magnets

Ans 7:

Class : Class 10
loud speakers have both electromagnets and permanent magnets

Ans 8:

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

Ans 9:

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

Ans 10:

Class : Class 9

Ans 11:

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

Ans 12:

Class : Class 10
they use both so the answer is d

Ans 13:

Class : Class 7
Don't loudspeakers use electromagnets?

Ans 14:

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

Ans 15:

Class : Class 10

Ans 16:

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

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Subject :NSO    Class : Class 6

Ans 1:

Class : Class 8

Ans 2:

Class : Class 6

Ans 3:

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

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Subject :NSO    Class : Class 5

Ans 1:

Class : Class 9
The answer is B

Ans 2:

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 3:

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

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Subject :NSO    Class : Class 6

Ans 1:

Class : Class 8
How is it C!?

Ans 2:

Class : Class 6
c

Ans 3:

Class : Class 10
c is the answer

Ans 4:

Class : Class 9

Ans 5:

Class : Class 10
solution?

Ans 6:

Class : Class 7
its C acording to me

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
yes i think that opt C is correct

Ans 2:

Class : Class 9
correct answer is C

Ans 3:

Class : Class 10
I too think correct option is C

Ans 4:

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 5:

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

Ans 6:

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 7:

Class : Class 9

Ans 8:

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

Ans 9:

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 10:

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

Ans 11:

Class : Class 9

Ans 12:

Class : Class 10
answer is C

Ans 13:

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

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Subject :NSO    Class : Class 4

Ans 1:

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 2:

Class : Class 4
c

Ans 3:

Class : Class 5
Aayansh from mundamarai

Ans 4:

Class : Class 5
C

Ans 5:

Class : Class 5

Ans 6:

Class : Class 4

Ans 7:

Class : Class 4
Ans: C

Ans 8:

Class : Class 4

Ans 9:

Class : Class 5
tg4tg

Ans 10:

Class : Class 4
I GOT 40/40 IN THIS QES. PAPER

Ans 11:

Class : Class 2
Sushree Snehasikta Bhera from Mother's Public school, Odishaclass 4Answer is c as cockroach has three stages in its life cycle and also the young one of the cockroach resembles the adult. The housefly also has three stages in its life cycle and also does not resemble its adult.

Ans 12:

Class : Class 4

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Subject :NSO    Class : Class 4

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Subject :NSO    Class : Class 3

Ans 1:

Class : Class 3
B

Ans 2:

Class : Class 6
b

Ans 3:

Class : Class 7

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Subject :NSO    Class : Class 3

Ans 1:

Class : Class 3
B is the right answer.

Ans 2:

Class : Class 9
The correct answer is B.

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