National Science Olympiad Forum By SOF Olympiad Trainer

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Subject :NSO    Class : Class 5

Ans 1:

Class : Class 6
Answer is B

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Subject :NSO    Class : Class 6

Ans 1:

Class : Class 6

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Subject :NSO    Class : Class 7

Besides the arrangement as shown in the given set-up, what other arrangements must be made to test for the presence of starch in the leaves X and Y ?


A The plant should be destarched first and then used for the experiment.
B The plant should be placed in continuous light for 2-3 days prior to experiment..
C On leaf Y, iodine solution should be put on while leaf X should be used as control without iodine application.
D None of these.


please provide an explanation of this answer

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Subject :NSO    Class : Class 6

Ans 1:

Class : Class 7
the correct option is D and i have written D then also they had given me wrong and they had telling the answer B.

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Subject :NSO    Class : Class 7

Ans 1:

Class : Class 7
why not A

Ans 2:

Class : Class 8
It's A right?

Ans 3:

Class : Class 7
Black radiates and absorbs heat faster. Confirmation is their in almost all science tb and google too. So answer must be A. WHY NOT A

Ans 4:

Class : Class 7
WHY NOT A

Ans 5:

Class : Class 7
how is the answerB. according to my science text book ( New science ahead class 7, pg.47), Black not only absorbs heat fast,but also radiates heat fast and cools down faster, accordingto that,answermust be A.

Ans 6:

Class : Class 8
How

Ans 7:

Class : Class 7
B IS GIVEN HERE IN NSO TEST.

Ans 8:

Class : Class 7
I think that the answer is A.Could someone explain why it is B?

Ans 9:

Class : Class 7

Ans 10:

Class : Class 7
Why

Ans 11:

Class : Class 7

Ans 12:

Class : Class 7
It should be A

Ans 13: (Master Answer)

Class : Class 1
The correct answer is B.

Ans 14:

Class : Class 8

Ans 15:

Class : Class 8

Ans 16:

Class : Class 8

Ans 17:

Class : Class 7
I agree with you Anushree because the same thing is given in our science textbook also

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Subject :NSO    Class : Class 3

Ans 1:

Class :
The pencil looks bent because of the phenomenon called Refraction. When light enters water it cannot move as fast as it does in the air. As the light enters the water on an angle it does not follow its original path, and this makes the image look bend.

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Subject :NSO    Class : Class 7

Ans 1:

Class : Class 8
Ans a

Ans 2:

Class : Class 8
the answer is c according to me as convex mirror always forms diminished , erect and virtual image

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Subject :NSO    Class : Class 7

Ans 1:

Class : Class 7
they are asking what is incorrect

Ans 2:

Class : Class 8
as u are correct that pumule form the shoot of plant but in some cases it is future root like in some plants radicle decay due to some disease so pumule grows as root . So here right option will be "c"

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Subject :NSO    Class : Class 3

Ans 1:

Class : Class 9
Maharajganj

Ans 2:

Class :
Answer is option C. Both Radio and Television can be used to get updates because they support audio.

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Subject :NSO    Class : Class 3

Ans 1:

Class :
Tailor bird. It makes its nest with the leaves sewn to gether.

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