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.

Polymers

Multiple Choice Questions

171.

Assertion : 2-Methyl-1, 3-butadiene is the monomer of natural rubber.

Reason : Natural rubber is formed through anionic addition polymerisation.

If both assertion and reason are true and reason is the correct explanation of assertion.
If both assertion and reason are true but reason is not the correct explanation of assertion
If assertion is true but reason is false
If both assertion and reason are false.

172.

The example of condensation polymerisation is :

formaldehyde - metaformaldehyde
acetaldenyde - para acetaldehyde
acetone - mesityl oxide
ethene - polyethene

173.

Monomers of nylon 2-nylon 6 are

glycine and amino caproic acid
glycine and caproic acid
hexamethylene diamine and adipic acid
alanine and amino caproic acid.

174.
The polymer obtained by the interaction of ethylene glycol and terephthalic acid is

nylon

dacron

teflon

bakelite

dacron

Dacron is the polymer which is obtained by the interaction of ethylene glycol and terephthalic acid.

$\underset{Ethylene glycol}{n [HO - {CH}_{2} - {CH}_{2} - OH]} + \underset{Terephthalic acid}{n [HOOC - C_{6} H_{4} - COOH]} \overset{- (2 n - 1) H_{2} O}{\to} \underset{Dacron}{[- O - {CH}_{2} - {CH}_{2} - O - \overset{O}{\overset{∥}{C}} - C_{6} H_{4} - COOH]}$

175.

Assertion : Orlon is used as a synthetic fibre.

Reason : The monomer of orion is vinyl chloride

If both assertion and reason are true and reason is the correct explanation of assertion.
If both assertion and reason are true but reason is not the correct explanation of assertion.
If assertion is true but reason is false.
If both assertion and reason are false.

176.

Assertion : Teflon is chemically inert substance.

Reason : Chloroform when treated with antimony trifluoride gives teflon.

If both assertion and reason are true and reason is the correct explanation of assertion.
If both assertion and reason are true but reason is not the correct explanation of assertion.
If assertion is true but reason is false
If both assertion and reason are false.

177.

Assertion: Natural rubber is a polymer of isoprene.

Reason: Isoprene is a pentene.

If both assertion and reason are true and reason is the correct explanation of assertion.
If both assertion and reason are true but reason is not the correct explanation of assertion.
If assertion is true but reason is false.
If both assertion and reason are false.