National Science Olympiad Forum By SOF Olympiad Trainer - Page 621

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Subject :NSO    Class : Class 3

Ans 1: (Master Answer)

Class : Class 1
No, the correct answer is D. When written in decimal, the value of it comes out to be 0.2 and the rest are bigger than it. In fractions, as the denominator gets bigger, the number gets smaller.

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Subject :NSO    Class : Class 7

Ans 1: (Master Answer)

Class : Class 1
The correct answer is B.

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Subject :NSO    Class : Class 6

Ans 1:

Class : Class 9
Bcoz when glass Q is painted with light blue we are still able to see the mark , that means its still translucent. When glass R is painted with black, we are not able to see as black is an opaque color. This what the logic meant for. So, option B is correct

Ans 2:

Class : Class 3
why!

Ans 3:

Class : Class 9

Ans 4:

Class : Class 7
Even C is correct. In the workbook solution it’s given that slideR is supposed to be opaque

Ans 5:

Class : Class 9

Ans 6:

Class : Class 6
Option A can also be a correct answer because the transparency of the glass is not mentioned. It can be translucent or transparent as well.

Ans 7:

Class : Class 9
it is correct r is opaque and we would not be able to see the mark

Ans 8:

Class : Class 6
All of them were made of glass. So if P was left as it is without painting wouldn't it be transparent??

Ans 9:

Class : Class 4
slide r is opaque and slide q is translusent

Ans 10:

Class : Class 4
yes even c is the correct ans falguni is saying right

Ans 11:

Class : Class 9
Falguni and Tanmay , the C option is correct as R is opaque but the question is through which slide can we see the X mark clearly or partially and we can't see through because as you said R is opaque . Answer D is not correct either because colour affects the transparency of the slide. Answer A is not correct because P is transparent not translucent. That leaves us with Option B which is correct as Q is translucent and the students can see the X partially through it . Hope this explanation helps you clear all your doubts about this question.💜💜💜Oh and by the way completely not related to the question who else is an army ( BTS fans ) ?

Ans 12:

Class : Class 6
IT IS AND THE ANSWER IS B

Ans 13:

Class : Class 9
Sorry for the typo answer C is incorrect

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Subject :NSO    Class : Class 3

Ans 1: (Master Answer)

Class : Class 1
The correct answer is A.

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Subject :NSO    Class : Class 4

Ans 1:

Class : Class 7

Ans 2:

Class : Class 8
No idea........can someone just tell me how D??????????????????????????????

Ans 3:

Class : Class 5

Ans 4:

Class : Class 6
d

Ans 5:

Class : Class 9
IT IS D ANURADHA 4 C SVN KUTTUMUKKU

Ans 6:

Class : Class 8
The correct answer will be D

Ans 7:

Class : Class 4
a bru

Ans 8:

Class : Class 9
The correct answer should be A!!!!!

Ans 9:

Class : Class 6
I can't get the answer of this one.

Ans 10: (Master Answer)

Class : Class 1
The correct answer is D.

Ans 11:

Class : Class 6
d

Ans 12:

Class : Class 3
The thumb tacks were a good conductor of heat it was knocked in the wood so it could have easily condected the heat in itself

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Subject :NSO    Class : Class 3

Ans 1: (Master Answer)

Class : Class 1
The correct answer is A.

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Subject :NSO    Class : Class 7

Ans 1:

Class : Class 8
the first option in coloumn two isnt even a graph!

Ans 2:

Class : Class 7
correct option should be C

Ans 3:

Class : Class 8
The correct answer is Option(C).

Ans 4:

Class : Class 9

Ans 5:

Class : Class 10

Ans 6:

Class : Class 8

Ans 7:

Class : Class 9
(c)

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Subject :NSO    Class : Class 6

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Subject :NSO    Class : Class 6

Ans 1:

Class : Class 6
D because we should LCM as either Indian or Foreign stamps should be placed and max is LCM.

Ans 2:

Class : Class 6
Find the HCF / GCD of 378 and 588, you will get the answer.

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Subject :NSO    Class : Class 6

Ans 1:

Class : Class 8
yes.....graphite is a electrical conductor and a heat insulator

Ans 2:

Class : Class 8
graphite

Ans 3:

Class : Class 6
None of the above. No object can be conductor and insulator at the same time except for some elements like germanium and silicon.

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