National Science Olympiad Forum By SOF Olympiad Trainer - Page 631

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Subject :NSO    Class : Class 8

Ans 1:

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

Ans 2:

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

Ans 3:

Class : Class 9
wrong answerthe answer should be B

Ans 4:

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 5:

Class :
wool burns with smell of burning hair

Ans 6:

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

Ans 7:

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

Ans 8:

Class : Class 8
Correct answer is A

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 10

Ans 11:

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 12:

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

Ans 13:

Class : Class 9
Supposed to be D

Ans 14:

Class :
(D)

Ans 15:

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

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Subject :NSO    Class : Class 8

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Subject :NSO    Class : Class 4

Ans 1:

Class :

Ans 2:

Class :

Ans 3:

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

Ans 4:

Class : Class 9

Ans 5:

Class : Class 9

Ans 6:

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

Ans 7:

Class : Class 9

Ans 8:

Class : Class 8
I think c

Ans 9:

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

Ans 10:

Class :
THERE IS NO SOLUTION SOB HOW CAN WE UNDERSTAND

Ans 11:

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

Ans 12:

Class : Class 9

Ans 13:

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

Ans 14:

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

Ans 15:

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

Ans 16:

Class : Class 8

Ans 17:

Class : Class 4

Ans 18:

Class :
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
qwertyuiopasdfghjkkklzxcvbnm

Ans 21:

Class : Class 8
There is no explanation for the answer. How do we understand sof?

Ans 22:

Class : Class 8
There is no explanation for the answer. How do we understand Sof?

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Subject :NSO    Class : Class 5

Ans 1:

Class :
Answer is A

Ans 2:

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

Ans 3:

Class : Class 6

Ans 4:

Class :
l

Ans 5:

Class : Class 5
A

Ans 6:

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

Ans 7:

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

Ans 8:

Class : Class 6
A

Ans 9:

Class : Class 7
Aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa

Ans 10:

Class : Class 7
I

Ans 11:

Class : Class 5
A

Ans 12:

Class : Class 7

Ans 13:

Class : Class 5
Yes

Ans 14:

Class : Class 6
A

Ans 15:

Class : Class 5

Ans 16:

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

Ans 17:

Class :
Answer is A

Ans 18:

Class : Class 9
the 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
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"?

Ans 3:

Class : Class 9
A

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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 8
i really can't understand.

Ans 3:

Class : Class 8
Thanks for the solution saanvi

Ans 4:

Class : Class 7
Thanks Sanvi

Ans 5:

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

Ans 6:

Class : Class 9
Thank you for the solution saanvi

Ans 7:

Class : Class 7
Thank you saanvi

Ans 8:

Class : Class 9
I can not understand.

Ans 9:

Class :
solution pls

Ans 10:

Class : Class 6

Ans 11:

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 12:

Class :
what is this?

Ans 13:

Class : Class 8

Ans 14:

Class : Class 6

Ans 15:

Class :
i dont know

Ans 16:

Class : Class 9
Thank you Sanvi

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Subject :NSO    Class : Class 5

Ans 1:

Class : Class 8
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 2:

Class : Class 5

Ans 3:

Class : Class 9
every question is fake without solution including this one

Ans 4:

Class : Class 9
I ticked D by mistake 🙄

Ans 5:

Class : Class 7

Ans 6:

Class : Class 4

Ans 7:

Class : Class 1
Can u please explain

Ans 8:

Class : Class 3
ans is c

Ans 9:

Class : Class 9
its D

Ans 10:

Class : Class 4
Can you please explain

Ans 11:

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

Ans 12:

Class : Class 6
very silly question! haaaaaah

Ans 13:

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 14:

Class : Class 8

Ans 15:

Class : Class 5
bruh, ques 12

Ans 16:

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

Ans 17:

Class : Class 5
Areem is correct

Ans 18:

Class : Class 5
can you please explain me

Ans 19:

Class : Class 10
Can you explain

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 :

Ans 22:

Class : Class 5

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Subject :NSO    Class : Class 4

Ans 1:

Class : Class 8
[d] is wrong

Ans 2:

Class : Class 5
sof please tell that what is novemberook

Ans 3:

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

Ans 4:

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 5:

Class : Class 7
the correct answer is d

Ans 6:

Class : Class 9
Novembrook could be a mistake

Ans 7:

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

Ans 8:

Class : Class 5

Ans 9:

Class : Class 5

Ans 10:

Class : Class 6
what is Novemberook?

Ans 11:

Class :

Ans 12:

Class : Class 4
there is nothing called NOVEMBEROOK

Ans 13:

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 14:

Class : Class 4
[a] is the correct answer

Ans 15:

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

Ans 16:

Class :

Ans 17:

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 18:

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

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Subject :NSO    Class : Class 3

Ans 1:

Class : Class 10
It will be A.It is 'ROTATION' NOT 'REVOLUTION'..............

Ans 2:

Class :
C

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