May 19, 2022
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May 19, 2022
(a)Â Â 1/RÂ Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â (b)Â ...
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May 19, 2022
a. In vulcanization the rubber becomes harder and stronger b. Natural rubber has ‘trans’ configuration at every double bond c....
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May 19, 2022
(a)Â mgR/2Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â (b)Â 2 mgR (c)Â Â mgRÂ Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â (d)Â mgR/4 Answer:Â c (5)
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May 19, 2022
a. Polystyrene b. Nylon c. Polyethylene d. styrene butadiene resin Ans. d (10)
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May 19, 2022
(a)Â Â Â 1 : 2 (b)Â Â Â 1 : 3 (c)Â Â Â 2 : 3 (d)Â Â 1 :...
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May 19, 2022
(a)Â GMm/ 12R2Â Â Â Â Â Â Â Â Â (b) GMm/ 3R2 (c)Â GMm / 8R Â Â ...
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May 19, 2022
a. Teflon b. Nylon-66 c. Terylene d. Bakelite Ans. b (7)
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May 19, 2022
(a)Â Solid sphere will reach the bottom first (b)Â Hollow spherical shell will reach the bottom first (c)Â Â Both will...
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May 19, 2022
a. Nylon b. Polyvinyl chloride c. Cellulose d. Natural rubber Ans. d (6)
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May 19, 2022
(a)Â 0.062 J (b)Â 0.031 J (c)Â Â 0.015 J (d)Â 0.057 J Ans. b (42)
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May 19, 2022
a. Vander Waals b. Hydrogen bonding c. Dipole-dipole interaction d. None of these Ans. b (59)
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May 19, 2022
(a)Â Solid sphere (b)Â hollow sphere (c)Â Â Ring (d)Â All same Ans. d (24)
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May 19, 2022
a. Terephthalic acid and ethylene glycol b. Benzoic acid and para HOÂ – (CÂ 6 HÂ 4 ) – OH c. Propylene...
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May 19, 2022
(a)Â Â 2/3 mgRÂ Â Â Â Â Â Â Â (b) 3/4 mgR (c)Â Â mgR/2Â Â Â Â ...
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May 19, 2022
a. An addition polymer with a benzene ring in every repeating unit b. a condensation polymer with a benzene ring...
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May 19, 2022
a. D- fructose b. D- ribose c. D – glucose d. L – glucose Ans. c (8)
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May 19, 2022
a. A thermoplastic material obtained from caprolactam and urea b. A thermoplastic material obtained from nitrate and camphor c. A ...
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May 19, 2022
(a) – 5000 J                            (b) – 1000 J (c)  – 2400 J                            (d) 5000 J Answer: A (6)
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May 19, 2022
(a)  -2 mgR e             (b) 2 mgR e (c)  ...
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May 19, 2022
a. Phenol b. Glycol c. Glycerol d. Formaldehyde Ans.b (11)
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May 19, 2022
Ans. a (8)
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May 19, 2022
(a)Â Â Â Gm/R2Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â ...
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May 19, 2022
a. Natural rubber b. Teflon c. Nylon – 66 d. Polystyrene Ans. c (9)
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May 19, 2022
(a)  1/9 m             (b) 1/10 m (c) ...
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May 19, 2022
Ans. b (6)
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May 19, 2022
a. β – D – glucose b. α – D – glucose c. Fructose d. Rhamnose Ans. b (8)
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May 19, 2022
a. Nil b. Weak c. Strong d. Very strong Ans. b (9)
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May 19, 2022
(a)Â Â Â Â Â 2RÂ Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â (b)Â Â ...
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May 19, 2022
a. Polythene b. Polyester c. Polysaccharide d. Polyamide Ans. d (8)
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May 19, 2022
(a)   √GM/2R            (b) GM/R (c)  2√GM/R    ...
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May 19, 2022
a. Vinyl cyanide b. Acrolein c. Glycol d. Isoprene Ans. a (7)
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May 19, 2022
a. Decron b. Orlon (acrilan) c. PVC d. Bakelite Ans. b (7)
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May 19, 2022
a. Bakelite b. Dacron c. Rubber d. Nylon-66 Ans. d (7)
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May 19, 2022
a. Artificial silk is derived from cellulose b. Nylon – 66 is an example of elastomer c. The repeat unit...
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May 19, 2022
a. Si – O – Si linkage b. O – Si – O linkage c. Si – C – linkage...
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May 19, 2022
a. Bakelite b. Polythene c. polystyrene d. PVC Ans. a (16)