Polymers PYQs - Last 5 Years

The number of linear and crosslinked polymers in the following respectively are
Novolac, Nylon 6,6, Bakelite, PVC, melamine

A polymer sample contains 10 molecules each with molecular mass 5,000 and 5 molecules each with molecular mass 50,000 . The number average molecular mass of the polymer sample is

\(\text { Match the following : }\)
$$ \begin{array}{llrl} \hline & \text { List-I (Use) } & & \text { List-II (Substance) } \\ \hline \text { A. } & \text { Electrodes in batteries } & \text { I. } & \text { Polypropylene } \\ \hline \te...

Which one of the statements, regarding $X$ is not correct?
3-Hydroxybutanoic acid +3 -Hydroxypentanoic acid $\rightarrow X$

Consider the following
Statement I Nylon 6 is a condensation copolymer.
Statement II Nylon 6, 6 is a condensation polymer of adipic acid and tetra-methylene diamine.
The correct answer is

\(\text { Match the following. }\)
Correct answer is

Which of the following properties is not correct for silicones?

What are $X$ and $Y$ in the following reaction?
\(n \mathrm{ClCH}=\mathrm{CH}_2 \xrightarrow{x} Y\)

Novolac is formed by the polymerisation of monomer ' $x$ ' in the presence of $\mathrm{OH}^{-}$ions. What is ' $x$ '?

The correct statement regarding $X$ and $Y$ in the following set of reactions is

Which of the following is the common monomer for the polymers bakelite and melamine?

In which polymer preparation, Ziegler- Natta catalyst is used?

\(\text { Match the following. }\)


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Polymers that can be softened on heating and hardened on cooling are called

Which of the following is correct statement?

\(\text { The common monomer for both terylene and glyptal is }\)

The correctly matched set of the following is

\(\text { Which of the following is an example for fibre? }\)

Which of the following polymerisation leads to the formation of neoprene ?

PHBV is a biodegradable polymer of two monomers $X$ and $Y . X$ and $Y$ respectively are.

A polymer $X$ is biodegradable and is obtained from the monomers $Y, Z$. What are $Y$ and $Z$ ?

\(\text { Monomers of nylon 2-nylon } 6 \text { are }\)

In which of the following pairs the polymer is correctly matched with the forces possessed by them.
A. Neoprene - Weak intermolecular forces
B.Terylene - Hydrogen bonding
C. Polystyrene - Very weak intermolecular forces
D. Polythene - Hydro...

The catalyst used in the manufacture of polyethylene is a mixture of