Which of the following is not true?
In vulcanisation, the rubber becomes harder and stronger
Natural rubber has 'trans' configuration at every double bond
Buna-S is a copolymer of butene and styrene
Natural rubber is 1, 4-polymer of isoprene
Which of the following is not a biodegradable polymer?
Glyptol
Polyhydroxy butyrate-CO-β-hyrdoxy valerate
PHBV
Nylon 2-nylon-6
Three dimensional molecules with cross links are formed in the case of a
thermoplastic
thermosetting plastic
Both (a) and (b)
None of the above
The monomers of buna-S rubber are
vinyl chloride and sulphur
butadiene
styrene and butadiene
isoprene and butadiene