Choose the coorect option(s) from the following

Options

A. Natural rubber is polyisoprene containing trans alkene units
B. Nylon-6 has amide linkages
C. Teflon is prepared by heating tetrafluoroethane in presence of a persulphate catalyst at high pressure
D. Cellulose has only `alpha-D`- glucose units that are joined by glycosidic linkages

Answer

B, C

Explanation

Option (A) : Incorrect, Natural number is a linear polymer of isoprenen (2-methyl -1,3-butadiene) also known, as cis-1,4-poly isoprene.
Option (B): Correct, Nylon -6 contains only one kind of monomeric unit called caprolactam.
Option C: Correct Tetrafluoroethene (TFE) is heated with a free radial peroxide or ammonia persulphate catalyst at high pressure to given polytetrafluoroethene (PTFE).
Option (D) : Incorrect, Cellulose is a polysaccharide containing several `b(1 to 4)` linked D-glucose units. The structures of cellulose is as follows