National Science Olympiad Forum By SOF Olympiad Trainer - Page 570

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Subject :NSO    Class : Class 8

Ans 1:

Class : Class 8
(D)

Ans 2:

Class : Class 10

Ans 3:

Class : Class 8
Nylon does not have the smell of burning hair. So the answer should be d.

Ans 4:

Class : Class 8
IT SHOU BE D!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Ans 5:

Class : Class 9
nylon burns with a smell of plastic, not burning hair. WTF?

Ans 6:

Class : Class 9
wrong answerthe answer should be B

Ans 7:

Class : Class 9
Supposed to be D

Ans 8:

Class : Class 9
yes the answer is D. nylon burns with a smell of celery because its a synthetic fibre.

Ans 9:

Class : Class 9
IT must be D! Nylon does not burn with the smell of burning hair as it is purely synthetic and has no relation to the protein based hair.

Ans 10:

Class : Class 9
How can Nylon burn with the smell of burning hair??

Ans 11:

Class : Class 8
Correct answer is A

Ans 12:

Class : Class 8
wool burns with smell of burning hair

Ans 13:

Class : Class 8
Nylon should neither have a smell of burning hair nor the smell of burning paper. Nylon has a celery or plastic-like cell. Hence the correct answer is D. But on the other hand when acrylic burns, it shrinks and converts into black beads. On this contrast, the correct answer will be B with respect to acrylic and D with respect to Nylon. There is definitely an error in the options of the answers!

Ans 14:

Class : Class 8
How is this possible Nylon burns with smell of hair???

Ans 15:

Class : Class 8
It should be D. Because nylon would never once burn with smell of paper in it's entire career. SOF, you gotta chnage the answer man.

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Subject :NSO    Class : Class 8

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Subject :NSO    Class : Class 4

Ans 1:

Class : Class 7
There is no explanation for the answer. How do we understand Sof?

Ans 2:

Class : Class 8

Ans 3:

Class : Class 4
There is no explanation for the answer. How do we understand sof?

Ans 4:

Class : Class 4
THERE IS NO SOLUTION SOB HOW CAN WE UNDERSTAND

Ans 5:

Class : Class 4

Ans 6:

Class : Class 7
There is no explanation for the answer. How do we understand sof?

Ans 7:

Class : Class 8
I think c

Ans 8:

Class : Class 9
there is air friction against gravity. so answer is B

Ans 9:

Class : Class 9

Ans 10:

Class : Class 4
@ishi gupta i know this is irrevelent but its not sob its sof

Ans 11:

Class : Class 8
Yea, pls explain this question to us SOF admin

Ans 12:

Class : Class 9

Ans 13:

Class : Class 4

Ans 14:

Class : Class 9

Ans 15:

Class : Class 4
qwertyuiopasdfghjklzxcvbnm,.-/:;(â1

Ans 16:

Class : Class 10
Kqwertyuiopasdfghjklzxcvbnm,.-/:;(₹

Ans 17:

Class : Class 9

Ans 18:

Class : Class 4
Air always act as Frictional force against Gravity Hence ans is B in this case

Ans 19:

Class : Class 4

Ans 20:

Class : Class 4

Ans 21:

Class : Class 4
qwertyuiopasdfghjkkklzxcvbnm

Ans 22:

Class : Class 5
But they are telling that the right answer is option d

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Subject :NSO    Class : Class 5

Ans 1:

Class : Class 5
Answer is A

Ans 2:

Class : Class 5
Yes

Ans 3:

Class : Class 5
The answer could be both A or B because wheel barrows and screwdrivers are levers and wheel and axles

Ans 4:

Class : Class 7
Aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa

Ans 5:

Class : Class 5

Ans 6:

Class : Class 5
Answer is A

Ans 7:

Class : Class 7

Ans 8:

Class : Class 7
I

Ans 9:

Class : Class 9
why not B all the options are levers

Ans 10:

Class : Class 5
AAAAAAAAAAAAAAAAA!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Ans 11:

Class : Class 9
the answer is A

Ans 12:

Class : Class 5
A

Ans 13:

Class : Class 6
Admin please tell me ,how is escalator a pulley?

Ans 14:

Class : Class 5
A

Ans 15:

Class : Class 6
A

Ans 16:

Class : Class 4
l

Ans 17:

Class : Class 6
A

Ans 18:

Class : Class 6

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Subject :NSO    Class : Class 5

Ans 1:

Class : Class 9
It should be option A- Only 1 As water is liquid, the only change that can be seen is that of the change in shape. it volume will remain the same

Ans 2:

Class : Class 9
A

Ans 3:

Class : Class 9
The answer must be the option "A", as it states so "Farheen filled container X with 100 ml of water." Container Y had just a different shape, and it was also broader, so how can it be the option "C"?

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Subject :NSO    Class : Class 4

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Subject :NSO    Class : Class 6

Ans 1:

Class : Class 6
solution pls

Ans 2:

Class : Class 6

Ans 3:

Class : Class 9
Thank you for the solution saanvi

Ans 4:

Class : Class 7
Yes, Saanvi u r right...Thanks Anamkhan

Ans 5:

Class : Class 8

Ans 6:

Class : Class 9
Thank you Sanvi

Ans 7:

Class : Class 9
the sum of digits of the numbers in option a,b,d comes to 29. whereas in case of option c the total is 27.hence C is the correct answerwh

Ans 8:

Class : Class 5
i dont know

Ans 9:

Class : Class 7
Thanks Sanvi

Ans 10:

Class : Class 7
what is this?

Ans 11:

Class : Class 9
I can not understand.

Ans 12:

Class : Class 7
Thank you saanvi

Ans 13:

Class : Class 8
Thanks for the solution saanvi

Ans 14:

Class : Class 6

Ans 15:

Class : Class 8
i really can't understand.

Ans 16:

Class : Class 6

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Subject :NSO    Class : Class 5

Ans 1:

Class : Class 2
ans is c

Ans 2:

Class : Class 5
Areem is correct

Ans 3:

Class : Class 6
Option C) as it ask that what is the heart beat just stop so it means That in this point of time the heart beat is gonna decrease.

Ans 4:

Class : Class 5
bruh, ques 12

Ans 5:

Class : Class 5

Ans 6:

Class : Class 7
its D

Ans 7:

Class : Class 5
can you please explain me

Ans 8:

Class : Class 8

Ans 9:

Class : Class 7

Ans 10:

Class : Class 6
Ans is B because as in the line graph the number of heartbeats decreased in the line RS.

Ans 11:

Class : Class 9
I ticked D by mistake 🙄

Ans 12:

Class : Class 1
Can u please explain

Ans 13:

Class : Class 9
U gotta explain this... d is also correct

Ans 14:

Class : Class 5

Ans 15:

Class : Class 7
Areen is correct but I ticked d so I got it wrong

Ans 16:

Class : Class 10
Can you explain

Ans 17:

Class : Class 4
Can you please explain

Ans 18:

Class : Class 4

Ans 19:

Class : Class 5

Ans 20:

Class : Class 5
very silly question! haaaaaah

Ans 21:

Class : Class 7
every question is fake without solution including this one

Ans 22:

Class : Class 7
When we stop exercise in heart rate decreases So in the graph it will be a decline in the line so option is B

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Subject :NSO    Class : Class 4

Ans 1:

Class : Class 8
Actually D is correct but there is a typing mistake in D4th Tuesday of November 20XX = 28 November. The next day is 29 November. So D is correct not A. There is a typing mistake in D, but that does not mean D is wrong.

Ans 2:

Class : Class 4
there is nothing called NOVEMBEROOK

Ans 3:

Class : Class 7
Novemberook is a typing mistake. Everyone can see that.

Ans 4:

Class : Class 4
They're saying after 4th tuesday that means 29 November. Novemberook could be a mistake.

Ans 5:

Class : Class 7
Novemberbook is a typing error. So the ans is D because it is telling 4th Tuesday which is 28th and it is said that just after 28th so the ans is D

Ans 6:

Class : Class 4

Ans 7:

Class : Class 9
The answer is D because they are saying AFTER 4th Tuesday of November 20XX that means 4th Tuesday is 28th November but after 28th November the date is 29th November .

Ans 8:

Class : Class 4
What is this Novemberook. I think it means November Book or is it a typing mistake.

Ans 9:

Class : Class 5
sof please tell that what is novemberook

Ans 10:

Class : Class 4
Novemberook ain't nothin. there is nothin' called like that but is the ans.

Ans 11:

Class : Class 6
what is Novemberook?

Ans 12:

Class : Class 4
[a] is the correct answer

Ans 13:

Class : Class 8
[d] is wrong

Ans 14:

Class : Class 5
the correct answer is d

Ans 15:

Class : Class 4

Ans 16:

Class : Class 5

Ans 17:

Class : Class 5

Ans 18:

Class : Class 9
Novembrook could be a mistake

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Subject :NSO    Class : Class 3

Ans 1:

Class : Class 9
It will be A.It is 'ROTATION' NOT 'REVOLUTION'..............

Ans 2:

Class : Class 4
C

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