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Subject :NSO    Class : Class 7

Rahul gets an assignment to make a list of fabrics made of different fibres. He takes piece of fabric X and Y and burns them to identify the fibre. Fibre X burns with smell of burning plastic and fibre Y with smell of burning hair. Identify the fabrics X and Y.

             X                Y
ANylon          Cotton
BCotton          Silk
CWool            Polyester
DPolyester      Silk

Silk burns with the smell of charred meat, not burning hair.

Ans 1:

Class : Class 9
It should be A

Ans 2:

Class : Class 7

Ans 3:

Class : Class 7
All options are wrong, it can't be A because cotton burns with smell of burning paper and similarly it can't be D because silk burns with an odour of charred meat.

Ans 4:

Class : Class 8
silk smells of charred meat . This was the answer given even in the chapterwise question bank

Ans 5:

Class : Class 7
cotton-burning paperwool-burning hairsilk-charred meat

Ans 6:

Class : Class 7

Ans 7:

Class : Class 7
Yes, The answer should be A and not D

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