National Science Olympiad Forum By SOF Olympiad Trainer - Page 619

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Subject :NSO    Class : Class 5

Ans 1:

Class : Class 5
I agree Areen

Ans 2:

Class : Class 5

Ans 3:

Class : Class 6
Ans is A because bituminous is not an ore, typhoid is not a vector-borne disease and nutcracker is not a class 1 lever.

Ans 4:

Class : Class 9
The correct answer is A because Bituminous is not a ore, typhoid is a water-borne disease and rest are vector-borne disease and nutcracker is an example of 2nd class lever whereas all the other are 1st class lever.

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Subject :NSO    Class : Class 6

Ans 1:

Class : Class 9
the answer is b . this is because sun tan is temporary.

Ans 2:

Class : Class 9
answer is b

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Subject :NSO    Class : Class 8

Ans 1:

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

Ans 2:

Class : Class 9
wrong answerthe answer should be B

Ans 3:

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 4:

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

Ans 5:

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 6:

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

Ans 7:

Class : Class 8
(D)

Ans 8:

Class : Class 10

Ans 9:

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

Ans 10:

Class : Class 8
Correct answer is A

Ans 11:

Class : Class 9
Supposed to be D

Ans 12:

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

Ans 13:

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

Ans 14:

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 15:

Class : Class 8
wool burns with smell of burning hair

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Subject :NSO    Class : Class 8

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Subject :NSO    Class : Class 4

Ans 1:

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

Ans 2:

Class : Class 4

Ans 3:

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

Ans 4:

Class : Class 8

Ans 5:

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

Ans 6:

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

Ans 7:

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

Ans 8:

Class : Class 9

Ans 9:

Class : Class 4

Ans 10:

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

Ans 11:

Class : Class 4
qwertyuiopasdfghjkkklzxcvbnm

Ans 12:

Class : Class 4

Ans 13:

Class : Class 4

Ans 14:

Class : Class 9

Ans 15:

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

Ans 16:

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

Ans 17:

Class : Class 8
I think c

Ans 18:

Class : Class 9

Ans 19:

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

Ans 20:

Class : Class 9

Ans 21:

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

Ans 22:

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

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Subject :NSO    Class : Class 5

Ans 1:

Class : Class 7
Aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa

Ans 2:

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

Ans 3:

Class : Class 7

Ans 4:

Class : Class 6

Ans 5:

Class : Class 9
the answer is A

Ans 6:

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

Ans 7:

Class : Class 5
A

Ans 8:

Class : Class 5
Answer is A

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 6
A

Ans 11:

Class : Class 5
Yes

Ans 12:

Class : Class 5

Ans 13:

Class : Class 5
Answer is A

Ans 14:

Class : Class 4
l

Ans 15:

Class : Class 7
I

Ans 16:

Class : Class 5
A

Ans 17:

Class : Class 6
A

Ans 18:

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

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Subject :NSO    Class : Class 5

Ans 1:

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 2:

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 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 7
Thanks Sanvi

Ans 2:

Class : Class 7
what is this?

Ans 3:

Class : Class 8
i really can't understand.

Ans 4:

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

Ans 5:

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 6:

Class : Class 7
Thank you saanvi

Ans 7:

Class : Class 9
Thank you for the solution saanvi

Ans 8:

Class : Class 6

Ans 9:

Class : Class 6

Ans 10:

Class : Class 9
I can not understand.

Ans 11:

Class : Class 5
i dont know

Ans 12:

Class : Class 6
solution pls

Ans 13:

Class : Class 8

Ans 14:

Class : Class 6

Ans 15:

Class : Class 9
Thank you Sanvi

Ans 16:

Class : Class 8
Thanks for the solution saanvi

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Subject :NSO    Class : Class 5

Ans 1:

Class : Class 5

Ans 2:

Class : Class 5

Ans 3:

Class : Class 1
Can u please explain

Ans 4:

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

Ans 5:

Class : Class 8

Ans 6:

Class : Class 10
Can you explain

Ans 7:

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

Ans 8:

Class : Class 9
I ticked D by mistake 🙄

Ans 9:

Class : Class 5
bruh, ques 12

Ans 10:

Class : Class 5
can you please explain me

Ans 11:

Class : Class 4

Ans 12:

Class : Class 7

Ans 13:

Class : Class 5

Ans 14:

Class : Class 4
Can you please explain

Ans 15:

Class : Class 2
ans is c

Ans 16:

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 17:

Class : Class 5
Areem is correct

Ans 18:

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

Ans 19:

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 20:

Class : Class 5
very silly question! haaaaaah

Ans 21:

Class : Class 9
its D

Ans 22:

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

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