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 8
silk smells of charred meat . This was the answer given even in the chapterwise question bank
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 7
Yes, The answer should be A and not D
Ans 5:
Class : Class 9
It should be A
Ans 6:
Class : Class 7
tttt
Ans 7:
Class : Class 7
cotton-burning paperwool-burning hairsilk-charred meat