National Science Olympiad Forum By SOF Olympiad Trainer - Page 427

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Subject :NSO    Class : Class 3

Ans 1:

Class : Class 7
both B

Ans 2:

Class : Class 7
B & D

Ans 3:

Class : Class 6

Ans 4:

Class : Class 4
B

Ans 5:

Class : Class 2
both B and D are incorrect

Ans 6:

Class : Class 3

Ans 7:

Class : Class 3
D is incorrect.But B is also incorrect as both kerosene and syrup are liquid.

Ans 8:

Class : Class 8
why did not you send right answer clarification or correct options

Ans 9:

Class : Class 3
B and D are incorrect

Ans 10:

Class : Class 8
B

Ans 11:

Class : Class 8
B and D both are incorrect.

Ans 12:

Class : Class 4
Syrup is not a gas.

Ans 13:

Class : Class 3
B & D

Ans 14:

Class : Class 3
B & D

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Subject :NSO    Class : Class 3

Ans 1:

Class : Class 3
Huh i got it wrong . it was v easy

Ans 2:

Class : Class 3
A

Ans 3:

Class : Class 8
Answer is A

Ans 4:

Class : Class 7
A

Ans 5:

Class : Class 5
answer is A not B

Ans 6:

Class : Class 2
Crecent to Newmoon to Crecent to Full Moon. Answer is A

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Subject :NSO    Class : Class 6

A matchbox containing an unknown object is placed on a thin sheet of glass in the experimental set-up shown in the figure.

When the bar magnet moves, it is able to drag the match box along. What is most likely to be found in the matchbox?

A Marble
B Toothpick
C Ten-cent coin
D Steel ball bearing


the match box should certainly contain something magnetic as, when the bar magnet is moved then the match box is also dragged along with it .

Ans 1:

Class : Class 9

Ans 2:

Class : Class 8
Ya Sharmi is correct, ten-cent coin is also always magnetic

Ans 3:

Class : Class 8
Yes it is... yet a steel ball bearing is the best option

Ans 4:

Class : Class 7
Isn't a ten-cent coin also magnetic?

Ans 5:

Class : Class 8
steel ball bearing is a conducter that is why it is able to drag the box with it.

Ans 6:

Class : Class 8
Yes steel ball bearing is the best option ....... but i think ten cent coin is also magnetic ... but let it be option A {STEEL BALL BEARING}

Ans 7:

Class : Class 6
Steel is not a magnetic material

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Subject :NSO    Class : Class 6

The figure shows a ring magnet, X, floating above another ring magnet, Y. This is because


A Magnet X is lighter than magnet Y
B Magnet Y is more powerful than magnet X
C The like poles of both magnets are facing each other and they repel each other
D The unlike poles of both magnets are facing each other and they attract each other.


as the like poles repel each other and thre is no force acting on the magnet the answer should be c

Ans 1:

Class : Class 6
the ans should be (C) as the like poles repel each other

Ans 2:

Class : Class 6
NO,LIKE POLES DO REPEL EACH OTHER,WHILE THEY DO NOT REPEL UNLIKE POLES ATTRACT EACH OTHER

Ans 3:

Class : Class 8
C is correct

Ans 4:

Class : Class 6

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Subject :NSO    Class : Class 6

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Subject :NSO    Class : Class 4

Ans 1:

Class : Class 3
C:linen

Ans 2:

Class : Class 5
thanks for writing

Ans 3:

Class : Class 7

Ans 4:

Class : Class 4
C. LINEN

Ans 5:

Class : Class 7

Ans 6:

Class : Class 4
Linen as it comes from flax plant stem

Ans 7:

Class : Class 6
C:linen

Ans 8:

Class : Class 4
Thanks a lot!

Ans 9:

Class : Class 5
c;linen

Ans 10:

Class : Class 5

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Subject :NSO    Class : Class 4

Ans 1:

Class : Class 5
the correct option is C

Ans 2:

Class : Class 4
OPTION C

Ans 3:

Class : Class 6
option C

Ans 4:

Class : Class 4
you are right

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Subject :NSO    Class : Class 8

Ans 1:

Class : Class 9
I don't understand the ANSWER as it also helps in mixing the nutrients uniformly in the soil.

Ans 2:

Class : Class 6

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Subject :NSO    Class : Class 3

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Subject :NSO    Class : Class 4

Ans 1:

Class : Class 8
Kanav , if you know the answer then why have you posted it on the forum ?

Ans 2:

Class : Class 3

Ans 3:

Class : Class 7

Ans 4:

Class : Class 6
option B

Ans 5:

Class : Class 4

Ans 6:

Class : Class 7
is is b how

Ans 7:

Class : Class 5
white you are rude for sure and it IS b

Ans 8:

Class : Class 4

Ans 9:

Class : Class 4
how do you know that Kavan knows the correct answer

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