National Science Olympiad Forum By SOF Olympiad Trainer - Page 564

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Subject :NSO    Class : Class 8

Ans 1:

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 2:

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

Ans 3:

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 4:

Class : Class 9
wrong answerthe answer should be B

Ans 5:

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

Ans 6:

Class : Class 8
(D)

Ans 7:

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

Ans 8:

Class : Class 8
Correct answer is A

Ans 9:

Class : Class 8
wool burns with smell of burning hair

Ans 10:

Class : Class 10

Ans 11:

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

Ans 12:

Class : Class 9
Supposed to be D

Ans 13:

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

Ans 14:

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.

Ans 15:

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

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Subject :NSO    Class : Class 8

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Subject :NSO    Class : Class 4

Ans 1:

Class : Class 4
qwertyuiopasdfghjkkklzxcvbnm

Ans 2:

Class : Class 9

Ans 3:

Class : Class 4

Ans 4:

Class : Class 9

Ans 5:

Class : Class 4

Ans 6:

Class : Class 9

Ans 7:

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

Ans 8:

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

Ans 9:

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

Ans 10:

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

Ans 11:

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

Ans 12:

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

Ans 13:

Class : Class 4

Ans 14:

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

Ans 15:

Class : Class 4

Ans 16:

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

Ans 17:

Class : Class 8
I think c

Ans 18:

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

Ans 19:

Class : Class 9

Ans 20:

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

Ans 21:

Class : Class 8

Ans 22:

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

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Subject :NSO    Class : Class 5

Ans 1:

Class : Class 5
Answer is A

Ans 2:

Class : Class 6
A

Ans 3:

Class : Class 5

Ans 4:

Class : Class 5
A

Ans 5:

Class : Class 6

Ans 6:

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

Ans 7:

Class : Class 4
l

Ans 8:

Class : Class 7

Ans 9:

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

Ans 10:

Class : Class 9
the answer is A

Ans 11:

Class : Class 5
A

Ans 12:

Class : Class 7
I

Ans 13:

Class : Class 7
Aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa

Ans 14:

Class : Class 5
Yes

Ans 15:

Class : Class 6
A

Ans 16:

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

Ans 17:

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

Ans 18:

Class : Class 5
Answer is A

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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

Ans 2:

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

Ans 3:

Class : Class 8
i really can't understand.

Ans 4:

Class : Class 6

Ans 5:

Class : Class 9
Thank you Sanvi

Ans 6:

Class : Class 8

Ans 7:

Class : Class 6
solution pls

Ans 8:

Class : Class 7
Thanks Sanvi

Ans 9:

Class : Class 9
I can not understand.

Ans 10:

Class : Class 9
Thank you for the solution saanvi

Ans 11:

Class : Class 5
i dont know

Ans 12:

Class : Class 8
Thanks for the solution saanvi

Ans 13:

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 14:

Class : Class 6

Ans 15:

Class : Class 7
what is this?

Ans 16:

Class : Class 7
Thank you saanvi

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Subject :NSO    Class : Class 5

Ans 1:

Class : Class 10
Can you explain

Ans 2:

Class : Class 4
Can you please explain

Ans 3:

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

Ans 4:

Class : Class 7

Ans 5:

Class : Class 5

Ans 6:

Class : Class 5

Ans 7:

Class : Class 5
very silly question! haaaaaah

Ans 8:

Class : Class 4

Ans 9:

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

Ans 10:

Class : Class 5
bruh, ques 12

Ans 11:

Class : Class 5

Ans 12:

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

Ans 13:

Class : Class 8

Ans 14:

Class : Class 8
ans is c

Ans 15:

Class : Class 1
Can u please explain

Ans 16:

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

Ans 17:

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 18:

Class : Class 5
Areem is correct

Ans 19:

Class : Class 9
I ticked D by mistake 🙄

Ans 20:

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

Ans 21:

Class : Class 7
its D

Ans 22:

Class : Class 5
can you please explain me

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Subject :NSO    Class : Class 4

Ans 1:

Class : Class 5

Ans 2:

Class : Class 5

Ans 3:

Class : Class 9
Novembrook could be a mistake

Ans 4:

Class : Class 4

Ans 5:

Class : Class 8
[d] is wrong

Ans 6:

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

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

Ans 9:

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 10:

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

Ans 11:

Class : Class 6
what is Novemberook?

Ans 12:

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

Ans 13:

Class : Class 5
the correct answer is d

Ans 14:

Class : Class 5
sof please tell that what is novemberook

Ans 15:

Class : Class 4
[a] is the correct answer

Ans 16:

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

Ans 17:

Class : Class 4
there is nothing called NOVEMBEROOK

Ans 18:

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.

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Subject :NSO    Class : Class 3

Ans 1:

Class : Class 4
C

Ans 2:

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

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