National Science Olympiad Forum By SOF Olympiad Trainer - Page 493

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Subject :NSO    Class : Class 7

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Subject :NSO    Class : Class 6

Ans 1:

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

Ans 2:

Class : Class 9

Ans 3:

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

Ans 4:

Class : Class 5
Loud speakers use permanent magnets

Ans 5:

Class : Class 7
Loudspeakers use electromagnets.

Ans 6:

Class : Class 10

Ans 7:

Class : Class 7
Don't loudspeakers use electromagnets?

Ans 8:

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

Ans 9:

Class : Class 6
answer is B so obvious

Ans 10:

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

Ans 11:

Class : Class 7
answer should be b

Ans 12:

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

Ans 13:

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

Ans 14:

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

Ans 15:

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

Ans 16:

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

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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 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 6
Well... I think the answer is B

Ans 3:

Class : Class 9
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 10
c is the answer

Ans 3:

Class : Class 9

Ans 4:

Class : Class 6
c

Ans 5:

Class : Class 10
solution?

Ans 6:

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

Ans 7:

Class : Class 7
its C acording to me

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Subject :NSO    Class : Class 8

Ans 1:

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

Ans 2:

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

Ans 3:

Class : Class 9

Ans 4:

Class : Class 9

Ans 5:

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 6:

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 7:

Class : Class 10
I too think correct option is C

Ans 8:

Class : Class 9
correct answer is C

Ans 9:

Class : Class 10
answer is C

Ans 10:

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

Ans 11:

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 12:

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

Ans 13:

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

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Subject :NSO    Class : Class 4

Ans 1:

Class : Class 5
C

Ans 2:

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 3:

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 4:

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

Ans 5:

Class : Class 4
c

Ans 6:

Class : Class 4

Ans 7:

Class : Class 4
Ans: C

Ans 8:

Class : Class 4

Ans 9:

Class : Class 4

Ans 10:

Class : Class 5
tg4tg

Ans 11:

Class : Class 4
Aayansh from mundamarai

Ans 12:

Class : Class 5

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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 9
The correct answer is B.

Ans 2:

Class : Class 3
B is the right answer.

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