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Subject :NSO    Class : Class 8

Match column I with column II and choose the correct option from the codes given below.

Column I Column II
P. Nylon (i) Burns quickly with a smell of burning paper
Q. Wool (ii) Burns with sooty flame, fabric shrinks and black beads are formed
R. Acrylic (iii) Shrinks after exposure to flame, forms hard beads and gives a smell of burning hair
S. Rayon (iv) Burns slowly with a smell of burning hair


A P - (i), Q - (iv), R - (ii), S - (iii)
B P - (iii), Q - (iv), R - (ii), S - (i)
C P - (iv), Q - (iii), R - (i), S - (ii)
D P - (ii), Q - (iv), R - (iii), S - (i)


Ans 1:

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

Ans 2:

Class : Class 9
wrong answerthe answer should be B

Ans 3:

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

Ans 4:

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

Ans 5:

Class : Class 10

Ans 6:

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 7:

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 8:

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

Ans 9:

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

Ans 10:

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 11:

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

Ans 12:

Class : Class 8
wool burns with smell of burning hair

Ans 13:

Class : Class 8
Correct answer is A

Ans 14:

Class : Class 9
Supposed to be D

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