Chemistry
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May 19, 2022
a. Sterospecific b. Non-metallic complexes c. Gaseous catalysts d. Universal in all polymerisation reactionos Ans. a (8)
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May 19, 2022
a. Ziegler- Natta process b. Heating with peroxides c. Condensing in sealed tubes d. Condensing with styrenes Ans. a (14)
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May 19, 2022
a. Below 10° C b. 10° to 50° C c. 50°  to  80° C d. 80° to 140° C Ans....
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May 19, 2022
a. Water b. Na 2  Co 3 c. A q. NaOH d. Aq. HCl Ans. c (8)
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May 19, 2022
a. Ziegler Natta catalyst b. Wilkinson’s catalyst c. Pd- catalyst d. Zeise’s salt catalyst Ans. a (11)
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May 19, 2022
a. Peroxides b. Cuprous chooride c. Anhydrous zinc chloride d. Anhydrous AlCl3 Ans. a (98)
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May 19, 2022
a. PVC b. Nylon c. Terylene d. Polyamide Ans. a (61)
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May 19, 2022
a. Nylon – 66 b. Bakelite c. Terylene d. Teflon Ans. d (52)
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May 19, 2022
a. Nylon 6 b. PVC c. Bakelite d. Buna-N Ans.c (11)
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May 19, 2022
Ans. b (18)
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May 19, 2022
a. They contain covalent bonds between various linear polymer chains b. They are formed from bi- and tri – functional...
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May 19, 2022
a. cis- polyisoprene b. Cellulose nitrate c. Cellulose acetate d. Vulcanised rubber Ans. a (6)
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May 19, 2022
a. Silk b. Dacron c. Nylon – 66 d. All of these Ans. d (12)
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May 19, 2022
a. Amylopectin b. Glycogen c. Starch d. Amylose Ans. d (7)
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May 19, 2022
a. Polythene b. Nylon – 6 c. Teflon d. Nylon -6, 6 Ans. d (9)
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May 19, 2022
a. Thermoplastic b. Thermosetting plastic c. Both d. None Ans. b (7)
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May 19, 2022
a. Natural polymer b. Semisynthetic polymer c. Synthetic polymer d. Plasticiser Ans. b (4)
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May 19, 2022
a. Thermoplastic b. Thermosetting plastic c. Elastic (rubber) d. Resin Ans. c (9)
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May 19, 2022
a. Melamine b. Glyptal c. Dacron d. Neoprene Ans. d (9)
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May 19, 2022
a. Formaldehyde → meta- formaldehyde b. Acetaldehyde →  para-aldehyde c. Acetone→  mesityl oxide d. Ethene → polyethene Ans. c...
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May 19, 2022
a. Polythese b. PVC c. Orlon d. Terylene Ans. d (7)
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May 19, 2022
a. Nylon 66 b. Nylon 6 c. Dacron d. Buna – S Ans. d (18)
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May 19, 2022
a. Terylene b. Polypropylene c. Polyethylene d. Polystyrene Ans. a (10)
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May 19, 2022
a. Starch and Nylon b. Starch and Cellulose c. Proteins and Nylon d. Proteins and PVC Ans. b (10)
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May 19, 2022
a. Dacron b. Neoprene c. Teflon d. Acrylonitrile Ans. a (8)
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May 19, 2022
a. Step-growth polymer b. Synthetic fibre c. Condensation polymer d. It is also called decron e. Thermosetting plastic Ans. e...
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May 19, 2022
⌈NH (CH 2  ) NHCO (CH 2 ) 4 CO ⌉ n is a a. Thermosetting polymer b. Homopolymer c. Copolyer d. Addition polymer Ans. c (14)
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May 19, 2022
a. Protein b. PVC c. Polythene d. Rubber Ans. a (11)
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May 19, 2022
a. Polyethylene b. PVC c. Nylon d. Cellophane Ans. d (9)
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May 13, 2022
a. Condensation polymer b. Polyamide c. Copolymer d. Homopolymer Ans. d (7)
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May 13, 2022
a. Random copolymer b. Homopolymer c. Alternate copolymer d. Crosslinked copolymer Ans. b (14)
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May 13, 2022
a. Nylon b. Bakelite c. Urea-formaldehyde resin d. all of these Ans. d (18)
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May 13, 2022
a. Bakelite b. Polystyrene c. Terylene d. Urea-formaldehyde resin e. Nylon Ans. b (12)
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May 13, 2022
a. It does not become soft on heating under pressure b. it can not be remoulded c. it is either...