CBSE Class 12 Chemistry Quiz | CBSE Class 12 Chemistry MCQs with Answers

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Questions
101 Natural rubber in a polymer of
A Isoprene
B Styrene
C Butadiene
D Ethyne

Answer: Isoprene
102 Zeigler – Natta catalyst is used in making
A LDPE
B HDPE
C PMMA
D Polystyrene

Answer: HDPE
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103 The commercial name of polyacrylonitrile is __________ .
A Orion (acrilan)
B Bakelite
C Dacron
D PVC

Answer: Orion (acrilan)
104 Which of the following is not a semisynthetic polymer?
A Vulcanised rubber
B cw-polyisoprene .
C Cellulose nitrate
D Cellulose acetate

Answer: cw-polyisoprene .
105 Novolac, the linear polymer used in paints is
A copolymer of melamine and HCHO
B condensation polymer of phenol and HCHO
C copolymer of buta 1, 3-diene and styrene
D polymer of methyl methacrylate

Answer: condensation polymer of phenol and HCHO
106 The polymer containing strong intermolecular H-bonding and crystalline nature is
A Nylon 6, 6
B Teflon
C Polystyrene
D Natural rubber

Answer: Nylon 6, 6
107 The polymer which is used in manufacture of squeeze bottles is
A Polypropene
B Low density polythene
C Polystyrene
D Teflon

Answer: Low density polythene
108 Which of the following is not correct regarding terylene?
A Thermosetting plastic
B also called dacron
C Step growth polymer
D Synthetic fibre

Answer: Thermosetting plastic
109 The polymer used in orthopaedic devices and in controlled drug release is
A PHBV
B Orion
C PTFE
D SBR

Answer: Orion
110 Caprolactum is used for preparation of
A Nylon-2 – Nylon-6
B Nylon-6,6
C Nylon-6
D Nylon 6, 10

Answer: Nylon-6
111 Which of the following is thermosetting polymer
A Bakelite
B Nylon-6,6
C Neoprene
D PVC

Answer: Bakelite
112 Which of the following has ester linkages?
A Terylene
B PVC
C Bakelite
D Nylon

Answer: Terylene
113 Which of the following statements is not true?
A Natural rubber is frans-polyisoprene
B Vulcanisation makes rubber hard due to cross linkages with sulphur.
C Buna-S is addition copolymer of butadiene and styrene
D Natural rubber is cis 1, 4-polymer of isoprene

Answer: Natural rubber is frans-polyisoprene
114 The monomer of polystyrene is
A C6H5CH=CH2
B CH2=CH—CHO
C C2H —CH=CH2
D CH2=CHCl

Answer: C6H5CH=CH2
115 The vitamin present in oils and fats are
A A and C
B A and D
C B and C
D A and B

Answer: A and D
116 RNA and DNA are chiral molecules, their chirality is due to
A chiral bases
B chiral phosphate units
C D-sugar component
D L-sugar component

Answer: D-sugar component
117 Glucose does not react with
A (CH3CO)2O
B NaHSO3
C NH2OH
D Cone. HNO3

Answer: NaHSO3
118 A basic amino acid among the following is
A histidine
B leucine
C glycine
D valine

Answer: histidine
119 Which of the following is non-reducing sugar?
A Sucrose
B Lactose
C Glucose
D Maltose

Answer: Sucrose
120 Which of the following statements is not correct?
A Denaturation makes the proteins more active.
B Insulin maintains sugar level in the blood of a human body.
C Blood proteins thrombin and fibrinogen are involved in blood clotting.
D Ovalbumin is a simple food reserve in egg white.

Answer: Denaturation makes the proteins more active.

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