The aqeous extracts of some polymers when tested with chomotropic solution followed by addition of sulphuric acid and then heating to nearly 100 C gave dark violet colour. Which of the following cannot respond to this test?$

The aqeous extracts of some polymers when tested with chomotropic solu

1.	The aqeous extracts of some polymers when tested with chomotropic solution followed by addition of sulphuric acid and then heating to nearly 100 C gave dark violet colour. Which of the following cannot respond to this test?$
A.	polyvinyl formal
B.	polyoxymethylenes
C.	urea-formaldehyde resisns
D.	polyacrylonitrile
Answer» E.

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