National Science Olympiad Forum By SOF Olympiad Trainer - Page 461

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Subject :NSO    Class : Class 7

Ans 1:

Class : Class 9
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 2:

Class : Class 4
ans is supposed to be c

Ans 3:

Class : Class 8
D

Ans 4:

Class : Class 7
D

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Subject :NSO    Class : Class 3

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Subject :NSO    Class : Class 4

Ans 1:

Class : Class 8
The answer is (D).

Ans 2:

Class : Class 8
C

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Subject :NSO    Class : Class 8

Ans 1:

Class : Class 9
No its d super nova

Ans 2:

Class : Class 6

Ans 3:

Class : Class 8
The Answer is Nova. C

Ans 4:

Class : Class 9
The answer is C. Nova

Ans 5:

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.

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Subject :NSO    Class : Class 8

Ans 1:

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 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 8
B

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Subject :NSO    Class : Class 8

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Subject :NSO    Class : Class 9

Ans 1:

Class : Class 9
Answer is Dconfirm !!

Ans 2:

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

Ans 3:

Class : Class 10
Yes it is definitely D

Ans 4:

Class : Class 9
Answer is D

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Subject :NSO    Class : Class 4

Ans 1:

Class : Class 6
file:///C:/Users/Amit/Downloads/MicrosoftWindows.Client.CBS_cw5n1h2txyewy!InputApp/ConfusionGIF.gif

Ans 2:

Class : Class 6

Ans 3:

Class : Class 6

Ans 4:

Class : Class 8
A

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Subject :NSO    Class : Class 6

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Subject :NSO    Class : Class 7

Ans 1:

Class : Class 7
option c

Ans 2:

Class : Class 7
option c

Ans 3:

Class : Class 7
C

Ans 4:

Class : Class 7
c, 15 is betwwen 1st and last student. gender of first and last student not known

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