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

Questions

101 Natural rubber in a polymer of

A Isoprene

B Styrene

C Butadiene

D Ethyne

View Answer

Answer: Isoprene

102 Zeigler – Natta catalyst is used in making

A LDPE

B HDPE

C PMMA

D Polystyrene

View Answer

Answer: HDPE

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103 The commercial name of polyacrylonitrile is __________ .

A Orion (acrilan)

B Bakelite

C Dacron

D PVC

View Answer

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

View Answer

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

View Answer

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

View Answer

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

View Answer

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

View Answer

Answer: Thermosetting plastic

109 The polymer used in orthopaedic devices and in controlled drug release is

A PHBV

B Orion

C PTFE

D SBR

View Answer

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

View Answer

Answer: Nylon-6

111 Which of the following is thermosetting polymer

A Bakelite

B Nylon-6,6

C Neoprene

D PVC

View Answer

Answer: Bakelite

112 Which of the following has ester linkages?

A Terylene

B PVC

C Bakelite

D Nylon

View Answer

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

View Answer

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

View Answer

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

View Answer

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

View Answer

Answer: D-sugar component

117 Glucose does not react with

A (CH3CO)2O

B NaHSO3

C NH2OH

D Cone. HNO3

View Answer

Answer: NaHSO3

118 A basic amino acid among the following is

A histidine

B leucine

C glycine

D valine

View Answer

Answer: histidine

119 Which of the following is non-reducing sugar?

A Sucrose

B Lactose

C Glucose

D Maltose

View Answer

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.

View Answer

Answer: Denaturation makes the proteins more active.

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