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Published on: 24/05/2021
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Download CBSE Class 12th Standard CBSE Chemistry question papers, sample papers, important questions, and previous year solved papers in PDF format. Get free study materials, NCERT solutions, and exam preparation resources for Class 12th Standard CBSE Chemistry
Questions + Answers key
Take MCQ Chemistry Test
1.
Which of the following are characteristics of thermosetting polymers?
Heavily branched cross linked polymers
Linear slightly branched long chain molecules
Become infusible on moulding so cannot be reused
Soften on heating and cooling,can be reused
2.
Which of the following polymers,need atleast one diene monomer for their preparation?
Dacron
Buna-S
Neoprene
Novolac
3.
Which of the following statements is not true about low density polythene?
Tough
Hard
Poor conductor of electricity
Highly branched structure
4.
The commercial name of polyacrylonitrile is .......
Dacron
Orlon (acrilan)
PVC
Bakelite
5.
Which of the following is not a semisynthetic polymer?
cis-Polyisoprene
Cellulose nitrate
Cellulose acetate
Vulcanised rubber
1.
(a)
Heavily branched cross linked polymers
2.
(c)
Neoprene
3.
(d)
Highly branched structure
4.
(b)
Orlon (acrilan)
5.
cis-Polyisoprene is a natural rubber.
12th Standard CBSE Syllabus & Materials
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