Question

Consider the Assertion and Reason given below:
Assertion (A): Ethene polymerized in the presence of Ziegler Natta catalyst at high temperature and pressure is used to make buckets and dustbins.
Reason (R): High density polymers are closely packed and are chemically inert.
Choose the correct answer from the following:

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• A. (A) and (R) both are wrong
• B. Both (A) and (R) are correct and (R) is the correct explanation of (A)
• C. Both (A) and (R) are correct but (R) is not the correct explanation of (A)
• D. (A) is correct but (R) is wrong

Answer 1

The correct option is B Both (A) and (R) are correct and (R) is the correct explanation of (A)

High-density polyethylene (HDPE) or polyethylene high-density (PEHD) is a thermoplastic polymer produced from the monomer ethylene. With a high strength-to-density ratio, HDPE is used in the production of plastic bottles, corrosion-resistant piping, geomembranes and plastic lumber including buckets and dustbins.
$\underset{\text{Ethene}}{nC{H}_2=C{H}_2}\underset{\text{Ziegler Natta Catalyst}}{\overset{TiC{l}_4+Al(Et{)}_3}{\to }}\underset{\text{Polythene(High Density)}}{(-C{H}_2-C{H}_2-{)}_n}$
High density polythene are closely packed and are chemically inert.
Both (A) and (R) are correct and (R) is the correct explanation of (A).
Hence, option (c) is correct answer.