National Science Olympiad Forum By SOF Olympiad Trainer - Page 277

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Subject :NSO    Class : Class 4

Ans 1:

Class : Class 8
A

Ans 2:

Class : Class 5
A

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Subject :NSO    Class : Class 7

Ans 1:

Class : Class 8
It was every obvious , Gauri . But thanks

Ans 2:

Class : Class 8
I meant very

Ans 3:

Class : Class 7
lkjisan;h.d

Ans 4:

Class : Class 8
Answer is A because after 100 degree, the water begins to evaporate.. So no more rise in temperature.

Ans 5:

Class : Class 9

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Subject :NSO    Class : Class 3

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Subject :NSO    Class : Class 6

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Subject :NSO    Class : Class 8

Ans 1:

Class : Class 5
i guess cotton too

Ans 2:

Class : Class 8
no

Ans 3:

Class : Class 8
Shouldn't it be cotton which keeps it cool and comfotable

Ans 4:

Class : Class 8
it should be cotton ... polyester is synthetic the basic character of polyester is hydrophobic .

Ans 5:

Class : Class 9
polyster is the answer

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Subject :NSO    Class : Class 6
W

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Subject :NSO    Class : Class 7

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Subject :NSO    Class : Class 4

Ans 1:

Class : Class 5
Ashwak mind your words

Ans 2:

Class : Class 8
Every person who says the answer is A , B or D is MAD

Ans 3:

Class : Class 7

Ans 4:

Class : Class 4
sun has no orbit and moon has orbit around the earth so the answer is C .... COMMET

Ans 5:

Class : Class 6
The orbit marked as 'x'is of the sun i.e. option 'B'

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Subject :NSO    Class : Class 5

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Subject :NSO    Class : Class 6

A few changes are given as follows:
(i) Spinning of top
(ii) Occurrence of day and night
(iii) Formation of curd from milk
(iv) Curdling of milk by adding lemon juice
(v) Digestion of food
(vi) Burning of paper
Which of the following represents the correct classification of these changes?

A(i), (iv) and (vi) are physical irreversible changes while (ii), (iii), (iv) and (v) are chemical changes.
B(i), (iv) and (vi) are fast changes while (ii), (iii) and (v) are slow changes.
C(ii), (iv), (v) and (vi) are desirable changes while (i) and (iii) are undesirable changes.
DNone of these


Ans 1:

Class : Class 6

Ans 2:

Class : Class 8

Ans 3:

Class : Class 3

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