National Science Olympiad Forum By SOF Olympiad Trainer - Page 517

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Subject :NSO    Class : Class 2

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Subject :NSO    Class : Class 1

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Subject :NSO    Class : Class 7

Ans 1:

Class : Class 4
ans is supposed to be c

Ans 2:

Class : Class 7
D

Ans 3:

Class : Class 10
HEy i do not know why but in the solution it is written that window cleaner is a aid.. This is wrong , as Window cleaner is ammonium hydroxide , which is a base.

Ans 4:

Class : Class 8
D

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Subject :NSO    Class : Class 3

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Subject :NSO    Class : Class 4

Ans 1:

Class : Class 8
C

Ans 2:

Class : Class 8
The answer is (D).

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Subject :NSO    Class : Class 8

Ans 1:

Class : Class 6
The answer must be D . Super NovaBecause in nova no explosion happens while in Supernova it is the end of the life of the star and explosion occurs.

Ans 2:

Class : Class 8
The Answer is Nova. C

Ans 3:

Class : Class 9
The answer is C. Nova

Ans 4:

Class : Class 9
No its d super nova

Ans 5:

Class : Class 6

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Subject :NSO    Class : Class 8

Ans 1:

Class : Class 8
B

Ans 2:

Class : Class 9
The answer is B. The water conducts the heat from the iron ball and thus WATER'S temperature will increase while the temperature of the ball will constantly keep decreasing as it is loosing heat. After sometime both the water and the ball come to equilibrium state i.e they have the same temperature. From then on the temperature will remain constant. AS graph in option B indicates an increase in temperature for a while and then constant temp it is correct

Ans 3:

Class : Class 9
The answer is B. The water conducts the heat from the iron ball and thus water's temperature will increase while the temperature of the ball will constantly keep decreasing as it is loosing heat. After sometime both the water and the ball come to equilibrium state i.e they have the same temperature. From then on the temperature will remain constant. AS graph in option B indicates an increase in temperature for a while and then constant temp It is correct

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Subject :NSO    Class : Class 8

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Subject :NSO    Class : Class 9

Ans 1:

Class : Class 10
yes you're right answer is d

Ans 2:

Class : Class 10
Yes it is definitely D

Ans 3:

Class : Class 9
Answer is Dconfirm !!

Ans 4:

Class : Class 9
Answer is D

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Subject :NSO    Class : Class 4

Ans 1:

Class : Class 7

Ans 2:

Class : Class 7

Ans 3:

Class : Class 7
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Ans 4:

Class : Class 8
A

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