National Science Olympiad Forum By SOF Olympiad Trainer - Page 644

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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 9
9.6

Ans 2:

Class : Class 9
Can u pls send the method

Ans 3:

Class : Class 10

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Subject :NSO    Class : Class 9

Ans 1:

Class : Class 9
The answer is 12cm

Ans 2:

Class : Class 9
The answer is 12cm

Ans 3:

Class : Class 10
the answer is 12 cm

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Subject :NSO    Class : Class 8

Ans 1:

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 2:

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

Ans 3:

Class : Class 8
positive charge is acqired

Ans 4:

Class : Class 6

Ans 5:

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

Ans 6:

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

Ans 7:

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 8:

Class : Class 4

Ans 9:

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

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Subject :NSO    Class : Class 8

Ans 1: (Master Answer)

Class : Class 1
The correct answer is C.

Ans 2:

Class : Class 10

Ans 3:

Class : Class 5
Why

Ans 4:

Class : Class 10
Protons don't move.

Ans 5:

Class : Class 10

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Subject :NSO    Class : Class 5

Ans 1:

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

Ans 2:

Class : Class 5
D

Ans 3:

Class : Class 5
D

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Subject :NSO    Class : Class 4

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Subject :NSO    Class : Class 10

Ans 1: (Master Answer)

Class : Class 1
The correct answer is D.

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