National Science Olympiad Forum By SOF Olympiad Trainer - Page 493

User Forum

Subject :NSO    Class : Class 7

Ans 1:

Class : Class 8

Ans 2:

Class : Class 1

Ans 3:

Class : Class 7
I don't understand tbh

Ans 4:

Class : Class 8
option a

Ans 5:

Class : Class 1
@Bhagyesh You need to use your

Ans 6:

Class : Class 8
option a

Ans 7:

Class : Class 1
@Bhagyesh You need to use your brain and do it with your hands. Simple. @Raavi no need of that big thingy

Ans 8:

Class : Class 7

Ans 9:

Class : Class 8
@bhagyesh .As metal rod or electroscope is positively charged all the currents flown to the object will be positive and the leaves will repel each other

Ans 10:

Class : Class 8
This is wrong. The answer should be C, due to induction. The positive charges move to the bottom as they repel, while the negative particles should move to the top, as they are attracted to the positive particles in the bar.

Ans 11:

Class : Class 7

Ans 12:

Class : Class 7
why not option c?

Ans 13:

Class : Class 8
how to do it

Ans 14:

Class : Class 4
how priyanka

Ans 15:

Class : Class 7

Post Your Answer

Subject :NSO    Class : Class 7

Post Your Answer

Subject :NSO    Class : Class 6

Ans 1:

Class : Class 7
Loudspeakers use electromagnets.

Ans 2:

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

Ans 3:

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

Ans 4:

Class : Class 5
Loud speakers use permanent magnets

Ans 5:

Class : Class 7
answer should be b

Ans 6:

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

Ans 7:

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

Ans 8:

Class : Class 7
Don't loudspeakers use electromagnets?

Ans 9:

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

Ans 10:

Class : Class 10

Ans 11:

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

Ans 12:

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

Ans 13:

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

Ans 14:

Class : Class 9

Ans 15:

Class : Class 6
answer is B so obvious

Ans 16:

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

Post Your Answer

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

Post Your Answer

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 9
The answer is B

Ans 3:

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

Post Your Answer

Subject :NSO    Class : Class 6

Ans 1:

Class : Class 7
its C acording to me

Ans 2:

Class : Class 9

Ans 3:

Class : Class 10
solution?

Ans 4:

Class : Class 8
How is it C!?

Ans 5:

Class : Class 6
c

Ans 6:

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

Ans 7:

Class : Class 10
c is the answer

Post Your Answer

Subject :NSO    Class : Class 8

Ans 1:

Class : Class 10
I too think correct option is 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 10
answer is C

Ans 6:

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 7:

Class : Class 9
correct answer is C

Ans 8:

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

Ans 9:

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 10:

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 11:

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

Ans 12:

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

Ans 13:

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

Post Your Answer

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 5

Ans 3:

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

Ans 4:

Class : Class 4
Ans: C

Ans 5:

Class : Class 5
C

Ans 6:

Class : Class 5
tg4tg

Ans 7:

Class : Class 4

Ans 8:

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 9:

Class : Class 4

Ans 10:

Class : Class 4
c

Ans 11:

Class : Class 4
Aayansh from mundamarai

Ans 12:

Class : Class 4

Post Your Answer

Subject :NSO    Class : Class 4

Ans 1:

Class : Class 5
D

Ans 2:

Class : Class 4
briany

Post Your Answer

Subject :NSO    Class : Class 3

Ans 1:

Class : Class 3
B

Ans 2:

Class : Class 7

Ans 3:

Class : Class 6
b

Post Your Answer