National Science Olympiad Forum By SOF Olympiad Trainer - Page 449

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Subject :NSO    Class : Class 3

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Subject :NSO    Class : Class 5

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Subject :NSO    Class : Class 10

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Subject :NSO    Class : Class 7

Ans 1:

Class : Class 9
your answer is wrong baking soda neutralize forming acid

Ans 2:

Class : Class 7
yes

Ans 3:

Class : Class 7
yes

Ans 4:

Class : Class 8
answer should be option a . Baking Soda is used to neutralize forming acid

Ans 5:

Class : Class 7
The answer has to be option A

Ans 6:

Class : Class 8
The answer is option A as baking soda neutralizes the effect of the formic acid

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Subject :NSO    Class : Class 9

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Subject :NSO    Class : Class 3

Ans 1:

Class : Class 9
d

Ans 2:

Class : Class 3
D

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Subject :NSO    Class : Class 5

Ans 1:

Class : Class 6
answer option(d)ie H

Ans 2:

Class : Class 5
H

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Subject :NSO    Class : Class 4

Ans 1:

Class : Class 5
B-green leafy vegetables

Ans 2:

Class : Class 3
B

Ans 3:

Class : Class 5
A

Ans 4:

Class : Class 4
B

Ans 5:

Class : Class 8
A . cereals , potatoes

Ans 6:

Class : Class 3

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Subject :NSO    Class : Class 4

Ans 1:

Class : Class 8
Answer is D as both precipitation and condensation are involved in formation of dew in humid nights. The water vapor condenses to form clouds. But, if precipitation was not there, the dew would have remained in the clouds! So, precipitation is also involved in formation of dew on humid nights. Q and R are condensation and precipitation respectively. Thus, the answer is D(condensation and precipitation) and not B(only condensation).

Ans 2:

Class : Class 4
D

Ans 3:

Class : Class 4
D

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Subject :NSO    Class : Class 7

Ans 1:

Class : Class 7

Ans 2:

Class : Class 9
Since it is in a parallel circuit, resistance offered is more after one of the bulbs is fused. This will increase the brightness of the bulb but decrease the ammeter reading since current is inversely proportional to resistance

Ans 3:

Class : Class 4
how come??

Ans 4:

Class : Class 7
Yes it’s correct

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