What structural changes are produced during vulcanization of ru

Previous Year Papers

Download Solved Question Papers Free for Offline Practice and view Solutions Online.

Test Series

Take Zigya Full and Sectional Test Series. Time it out for real assessment and get your results instantly.

Test Yourself

Practice and master your preparation for a specific topic or chapter. Check you scores at the end of the test.

Advertisement

Polymers

Short Answer Type

71.

Define copolymerisation? Give one example.

153 Views

72.

What are polyamides?

157 Views

73. A polymer is formed by the action of terephthalic acid.

Write its structure.

128 Views

74.

Name one synthetic polymer containing - CN group. Give its formula.

138 Views

Advertisement

Advertisement

75.
What structural changes are produced during vulcanization of rubber?

On vulcanisation, sulphur forms cross links at the reactive sites of double bonds and thus rubber gets stiffened.

215 Views

Advertisement

76.

Mention two uses of Nylon-6, 6.

157 Views

One Word Answers

77.

Which is better material for making PVC pipes a thermosetting plastic or a thermoplastic?

138 Views

Short Answer Type

78.

Give two examples of polymers that belong to the class of formaldehyde resins.

131 Views

Advertisement

79.

Classify the following polymers as chain growth and step growth polymers:
(i) Buna-S
(ii) Nylon-6,6
(iii) Terylene
(iv) PVC

227 Views

80.

State how rayon is different from silk?

151 Views

7
8
9

Advertisement