(a) 1/9 m (b) 1/10 m (c) 1/11 m (d) 10/11 m Answer: c (5)
a. β – D – glucose b. α – D – glucose c. Fructose d. Rhamnose Ans. b (6)
a. Nil b. Weak c. Strong d. Very strong Ans. b (8)
(a) 2R (b) 3R (c) 4R (d) 5R Answer: c (11)
a. Polythene b. Polyester c. Polysaccharide d. Polyamide Ans. d (8)
(a) √GM/2R (b) GM/R (c) 2√GM/R (d) GM/2R Answer: b (4)
a. Decron b. Orlon (acrilan) c. PVC d. Bakelite Ans. b (6)
a. Artificial silk is derived from cellulose b. Nylon – 66 is an example of elastomer c. The repeat unit in natural rubber is isoprene d. Both starch and cellulose are polymers of glucose Ans. b (6)
a. Si – O – Si linkage b. O – Si – O linkage c. Si – C – linkage d. Si – S – O linkage Ans. a (8)
a. Bakelite b. Polythene c. polystyrene d. PVC Ans. a (15)
a. CH3 CH 2 CI b. CH 3 CH2 OH c. C 6 H 6 d. C 3 H 6 Ans. d (34)
a. Nylon -66 b. Terylene c. Teflon d. Bakelite Ans. a (16)
a. Nil b. Weak c. Strong d. Very strong Ans. b (6)
a. Neoprene b. Teflon c. Thiokol d. PVC Ans. b (5)
a. Styrene b. Tetrafluoro ethylene c. Vinyl chloride d. Acrylonitrile Ans. d (15)
a. Melamine and tetrafluoroethane b. Malonic acid and hexamethyleneamine c. Melamine and vinyl acetate d. Melamine and formaldehyde Ans. d (8)
a. Protein b. Nylon c. Peptide d. All of these Ans. d (6)
a. They have high molecular weights and high melting points b. They have a high degree of cross- linking by strong C- C bond c. They have linear molecules consisting of very long chains d. They have linear molecules interlinked …
a. Increases b. Decreases c. Remains unchanged d. Uncertain Ans. a (15)
(a) mgR n/n-1 (b) nmgR (c) mgR n2/n2+1 (d) mgR n/n+1 Answer: …
(a) 3.80×108 metres (b) 3.37 ×106 metres (c) 7.60×104 metres (d) 1.90×102 metres Answer: a (43)
a. Polythene b. Perspex c. Teflon d. Bakelite Ans. c (6)
a. Nylon – 6 b. Teflon c. Terylene d. Bakelite Ans. a (6)
a. Ethylene b. 1- chloroethene c. Propene d. 1 – chloroethene Ans. d (6)
a. Benzene b. Phenyl amine c. Benzaldehyde d. Phenol Ans. d (6)
a. Monofluoroethene b. Difluoroethene c. Trifluoroethene d. Tetrafluoroethene Ans. d (5)
The compound that does not undergo polymerization under radical initiation, is a. (i) b. (ii) c. (iii) d. (iv) Ans. d (8)