National Science Olympiad Forum By SOF Olympiad Trainer - Page 544

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Subject :NSO    Class : Class 2

Ans 1:

Class : Class 4
D = woollend

Ans 2:

Class : Class 4
D

Ans 3: (Master Answer)

Class : Class 1
Woollen fibres entrap air to keep us warm and burn with the smell of burning hair because they are made from hair of animals like sheep, etc.

Ans 4:

Class : Class 5
D

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Subject :NSO    Class : Class 9

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Subject :NSO    Class : Class 6

Ans 1:

Class : Class 6
Answer is A. Walnut is rich in Omega 3 because it help us to develop our brain espically kids.

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Subject :NSO    Class : Class 7

Ans 1:

Class : Class 7
Ans=y Because the small intestine help to more digested

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Subject :NSO    Class : Class 7

Ans 1:

Class : Class 7
Option a is correct

Ans 2:

Class : Class 7

Ans 3:

Class : Class 7

Ans 4:

Class : Class 7

Ans 5:

Class : Class 7

Ans 6:

Class : Class 7

Ans 7:

Class : Class 8
answer A is correct

Ans 8:

Class : Class 7

Ans 9:

Class : Class 4
Option a is correct but disaccharides aren’t enzymes

Ans 10:

Class : Class 8
option a

Ans 11:

Class : Class 7

Ans 12:

Class : Class 5
Option A

Ans 13:

Class : Class 8

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Subject :NSO    Class : Class 7

The given list shows the five steps needed to do a starch test but in a random order.
(i) Pluck a leaf from the plant.
(ii) Leave a potted plant out in the Sun for a few hours.
(iii) Boil the leaf in alcohol.
(iv) Put the leaf in boiling water for 2 minutes.
(v) Wash the leaf and then add a few drops of iodine solution over it.
Select the option with correct order of these steps.

A (i), (ii), (iii), (iv), (v)
B (i), (ii), (iv), (iii), (v)
C (ii), (i), (v), (iv), (iii)
D (ii), (i), (iv), (iii), (v)


Ans 1:

Class : Class 8
Option D : (ii), (i), (iv), (iii), (v)

Ans 2:

Class : Class 8
option d

Ans 3:

Class : Class 7
why not d

Ans 4:

Class : Class 7
Correct Answer- D

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Subject :NSO    Class : Class 7

Ans 1:

Class : Class 10

Ans 2:

Class : Class 7
stupid

Ans 3:

Class : Class 7
Explain please

Ans 4:

Class : Class 5

Ans 5:

Class : Class 9
difficult

Ans 6:

Class : Class 7
explaination please

Ans 7:

Class : Class 6
Ans should be a

Ans 8:

Class : Class 6

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Subject :NSO    Class : Class 7

Ans 1:

Class : Class 9
The answer is A and not D since the terminals of the battery are not connected in a proper way.

Ans 2:

Class : Class 4
They have asked incorrect. Even I went wrong here

Ans 3:

Class : Class 8
the answer (a) not (d)

Ans 4:

Class : Class 4
Answer is a not d

Ans 5:

Class : Class 7
it can also be B

Ans 6:

Class : Class 8

Ans 7:

Class : Class 7
the answer is (A) and not (D)

Ans 8:

Class : Class 3
find incorrect option not correct

Ans 9:

Class : Class 7
Answer is B not D

Ans 10:

Class : Class 8
The answer should be 'B'

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Subject :NSO    Class : Class 7

Ans 1:

Class : Class 7
A is the correct answer

Ans 2:

Class : Class 7
A

Ans 3:

Class : Class 8
Option c is the correct answer, because if at all any cold material is stored in the flask, then the liquid becomes hot due to the heat of the sun. Hence it is used to reflect the radiation from the sun

Ans 4:

Class : Class 9
i am not sure if it is A or C

Ans 5:

Class : Class 7
Option C is the correct answer as the silvered walls of the thermo flask helps the liquid to sustain its form by reflecting the heat by Radiation (Heat that does not need any medium to travel unlike conduction and convection.)

Ans 6:

Class : Class 8
In my opinoin A is corrcect beacuse silvered wall is a solid thing and solid thing get's heat through the process of conduction.

Ans 7:

Class : Class 10
OPTION C IS CORRECT ANSWER.

Ans 8:

Class : Class 8
option c

Ans 9:

Class : Class 9

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Subject :NSO    Class : Class 10

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