National Science Olympiad Forum By SOF Olympiad Trainer - Page 639

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Subject :NSO    Class : Class 9

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Subject :NSO    Class : Class 5

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Subject :NSO    Class : Class 9

Ans 1:

Class : Class 9
next time

Ans 2:

Class : Class 10
z/(x-y) = 32/19 is not among the option of elements given.

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Subject :NSO    Class : Class 9

Ans 1: (Master Answer)

Class : Class 1
The correct answer is A.

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Subject :NSO    Class : Class 9

Ans 1:

Class : Class 9
pay attention to sum of their digits

Ans 2: (Master Answer)

Class : Class 1
The correct answer is B.

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Subject :NSO    Class : Class 9

Ans 1:

Class : Class 10

Ans 2:

Class : Class 9
Can u pls send the method

Ans 3:

Class : Class 9
9.6

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Subject :NSO    Class : Class 9

Ans 1:

Class : Class 9
The answer is 12cm

Ans 2:

Class : Class 10
the answer is 12 cm

Ans 3:

Class : Class 9
The answer is 12cm

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Subject :NSO    Class : Class 8

Ans 1:

Class : Class 8
Plastic is unable to be charged.. Wrong answer!

Ans 2:

Class : Class 4

Ans 3:

Class : Class 8
The options given here are a plastic scale,a woollen cloth, an inflated balloon and a COPPER rod, not a GLASS rod. How can the options appear differently for others, since many people here are saying that there is glass rod involved? Also, plastic is an insulator of electricity, so ideally it wouldn't acquire any charge, right? SOF should give a solution to this problem.

Ans 4:

Class : Class 9
When rubbed with fur, glass will become negatively charged. However if silk is used instead of fur, glass will acquire a positive charge.

Ans 5:

Class : Class 8
This is wrong, yet nothing has been done to fix it. It has been discovered to be wrong FOUR YEARS ago!

Ans 6:

Class : Class 9
glass rod when rubbed with fur, it gives electrons to fur and becomes positively charged

Ans 7:

Class : Class 8
Answer is A... positive charge is acquire by the glass rod

Ans 8:

Class : Class 8
positive charge is acqired

Ans 9:

Class : Class 6

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Subject :NSO    Class : Class 8

Ans 1:

Class : Class 5
Why

Ans 2:

Class : Class 10

Ans 3:

Class : Class 10
Protons don't move.

Ans 4: (Master Answer)

Class : Class 1
The correct answer is C.

Ans 5:

Class : Class 10

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Subject :NSO    Class : Class 5

Ans 1:

Class : Class 5
D

Ans 2:

Class : Class 5
D

Ans 3:

Class : Class 8
It should be option C. It should be discouraged.

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