National Science Olympiad Forum By SOF Olympiad Trainer

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Subject :NSO    Class : Class 4

Ans 1:

Class : Class 6

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Subject :NSO    Class : Class 4

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Subject :NSO    Class : Class 4

Ans 1:

Class : Class 4
You have to specify if waxing or waning crescent

Ans 2:

Class : Class 5

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Subject :NSO    Class : Class 8

Ans 1:

Class : Class 8
answer should be b because X will also lit up

Ans 2:

Class : Class 6
The answer should be B as it will be closed circuit

Ans 3:

Class : Class 8
Please explain it. I am also confused about the answer. I myself did B.

Ans 4:

Class : Class 8
answer should be B

Ans 5:

Class : Class 8
bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb is correct as current will flow though X but I do feel that current will prefer less resistant path so D can also be correct

Ans 6:

Class : Class 9
I too am confused as current will also flow through both the bulbs when circuit is closed. It will pass through the switch first and hence lighting up bulb Y.

Ans 7:

Class : Class 8
The answer is B

Ans 8:

Class : Class 8
b

Ans 9:

Class : Class 3
Option D is correct because current prefers the path that offers less resistance. The bulb provides resistance whereas the switch when closed does not. Hence correct answer is D

Ans 10:

Class : Class 8
X will light up... I think it's incorrect....

Ans 11:

Class : Class 8
It must be B.The current finds a more direct path to Y, Making it brighter.But the current still reaches X because there is still a path. SOF Says otherwise.

Ans 12:

Class : Class 9
Yess,my answer was B also

Ans 13:

Class : Class 8
The answer key says that X will not light up,but why?

Ans 14:

Class : Class 8
logically it should be B but sof says otherwise. why ????

Ans 15:

Class : Class 9
yes i too did B

Ans 16:

Class : Class 9

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Subject :NSO    Class : Class 5

Ans 1:

Class : Class 6
The answer is d

Ans 2:

Class : Class 3

Ans 3:

Class : Class 3
D

Ans 4:

Class : Class 6
It is a very serious thing for us that we are getting wrong answers from SOF . It should be D only !

Ans 5:

Class : Class 4
d

Ans 6:

Class : Class 6
Sorry , my brother changed the C into D . It should be C only !

Ans 7:

Class : Class 4
ans is D so easy

Ans 8:

Class : Class 4
Low High Many Many

Ans 9:

Class : Class 6

Ans 10:

Class : Class 5
Sorry all, I had not read the question well.😞😞

Ans 11:

Class : Class 6

Ans 12:

Class : Class 5
The answer is c

Ans 13:

Class : Class 5

Ans 14:

Class : Class 5
Veer Sehrawat, how c, the question says which town is located near an unpolluted river not a polluted river.

Ans 15:

Class : Class 5
no chart no answer

Ans 16:

Class : Class 6

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Subject :NSO    Class : Class 4

Ans 1:

Class : Class 5
NA

Ans 2:

Class : Class 6

Ans 3:

Class : Class 5

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Subject :NSO    Class : Class 4

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Subject :NSO    Class : Class 4

Which of the following is NOT hidden in the given word grid?


AStructure present in polar bear that protects it from cold and a structure present in Scoliodon that enables it to breathe underwater.
BBehavioural adaptation that helps Siberian cranes to escape cold winters of their homeland and structural adaptation that helps them to fly.
CPhenomenon wherein chameleon blends with its surrounding by changing its skin colour to remain unnoticed by its prey.
D Phenomenon wherein a leaf insect externally resembles a plant leaf to remain unnoticed by its predator.


Ans 1:

Class : Class 5
Mocking or copying.

Ans 2:

Class : Class 5
What is mimicry?

Ans 3:

Class : Class 5
😓😓copying

Ans 4:

Class : Class 5

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Subject :NSO    Class : Class 4

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Subject :NSO    Class : Class 6

Ans 1:

Class : Class 6

Ans 2:

Class : Class 8
The correct and is D as the magnetic field moves from North to south

Ans 3:

Class : Class 8

Ans 4:

Class : Class 8

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