The monomer of the polymer

• H₂C = C(CH₃)₂

• (CH₃)₂C = C(CH₃)₂

• CH₃CH = CH CH₃

• CH₃CH = CH₂

When addition polymerisation of ethene takes place in a hydrocarbon solvent in the presence of ziegler-Natta catalyst, it forms:

• LDP

• HDP

• Polyacrylnitrile

• Teflon

Which of the following polymers is prepared by condensation polymerisation ?

• Teflon

• Styrene

• Rubber

• Nylon 6, 6

Which is used as medicine?

• PVC

• Terylene

• Glyptal

• Urotropine

Substance having ester linkage is

• bakelite

• polythene

• PVC

• terylene

Which of the following, is a mordant dye?

• Aniline black

• Congo-red

• Alizarin

• Indigo

Buna-N synthetic rubber is a copolymer of:

• H₂C=CH-CN and H₂C=CH-CH=CH₂

• H₂C=CH-CN and H₂C=CH-$\underset{\underset{\mathrm{Cl}}{|}}{\mathrm{C}}$=CH₂

• H₂C=CH-$\underset{\underset{\mathrm{Cl}}{|}}{\mathrm{C}}$=CH and H₂C=CH-CH=CH₂

• H₂C=CH-CH=CH₂ and H₅C₆-CH=CH₂

Which one of the following molecules undergoes polymerisation to form natural rubber?

• Styrene

• 2-methyl-1, 3-butadiene

• Ethylene

• Iso-butene

Three dimensional molecules with cross links are formed in the case of a :

• thermoplastic

• thermosetting plastic

• Both (a) and (b)

• None of these

40.

Among the following substituted silanes, the one which will give rise to cross-linked silicone polymer on hydrolysis is

• R₃SiCl

• R₄Si

• RSiCl₃

• R₂SiCl₂