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Polymers

Short Answer Type

151. What are elastomers? Give an example of a natural elastomer.

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152.

What is Buna-S? Name the monomers used for its preparation. Mention its use.

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Long Answer Type

153.

How are low density polyethylene and high density polyethylene manufactured? Why do they differ in their densities?

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154.

Depict the probable structure of vulcanised rubber molecules.

168 Views

Short Answer Type

155.

What is vinyl polymerization? Explain it briefly.

375 Views

Long Answer Type

156.

Write the equation for the synthesis of melamine polymer. Mention one important use of this polymer.

192 Views

Short Answer Type

157.
What are additional polymers? Explain briefly with an example.

The polymers in which the monomers simply add to one another across the multiple bonds to form polymers are called additional polymers and the process is called additional polymerization e.g., polyethene.

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158. Write the name and structure of one of the common initiators used in free radical addition polymerization.

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Long Answer Type

159.

Which polymer is used for making plastic crockery? Give its monomer, polymerization and uses.

895 Views

Short Answer Type

160.

Differentiate between number average and weight average molecular masses of polymers.

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Previous Year Papers

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Short Answer Type

157. What are additional polymers? Explain briefly with an example.

Long Answer Type

Short Answer Type

157.
What are additional polymers? Explain briefly with an example.