Problem 1
Polymer formation from monomers starts by (a) condensation reaction between monomers (b) coordination reaction between monomers (c) conversion of monomer to monomer ions by protons (d) hydrolysis of monomers
Problem 2
On the basis of mode of formation, polymers can be classified (a) as addition polymers only (b) as condensation polymers only (c) as co-polymers (d) both addition and condensation polymers
Problem 3
Which of the following is a chain growth polymer? (a) proteins (b) starch (c) nucleic acid (d) polystyrene
Problem 4
The repeating units of PTFE are (a) \(\mathrm{F}_{2} \mathrm{C}=\mathrm{CF}_{2}\) (b) \(\mathrm{FCl} \mathrm{C}=\mathrm{CF}_{2}\) (c) \(\mathrm{F}_{3} \mathrm{C}-\mathrm{CF}_{3}\) (d) \(\mathrm{Cl}_{2} \mathrm{CH}-\mathrm{CH}_{3}\)
Problem 5
Low density polythene is prepared by (a) free radical polymerization (b) cationic polymerization (c) anionic polymerization (d) Ziegler-Natta polymerization
Problem 6
Which of the following is a chain growth polymer? (a) proteins (b) starch (c) nylon-6 (d) polythene
Problem 7
Which among the following is a synthetic polymer? (a) phenol-formaldehyde resin (b) proteins (c) polysaccharides (d) natural rubber
Problem 9
Which pair of species given below produce bakelite? (a) phenol, methanol (b) phenol, \(\mathrm{NaOH}\) (c) phenol, urea (d) phenol, formaldehyde
Problem 10
Treatment of rubber with sulphur is (a) annealing (b) vulcanization (c) quenching (d) none of these
Problem 11
Teflon, styrene and neoprene are all (a) monomers (b) co-polymers (c) homopolymers (d) condensation polymers
