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:
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:
- (A)(A) is correct but (R) is wrong
- (B)Both (A) and (R) are correct but (R) is not the correct explanation of (A)
- (C)Both (A) and (R) are correct and (R) is the correct explanation of (A)✓ Correct
- (D)(A) and (R) both are wrong.
Answer: (C)
Solution
Ethene polymerized over a Ziegler-Natta catalyst gives high-density polyethylene, whose unbranched chains pack tightly into a dense, tough, chemically inert plastic well suited to moulded articles such as buckets and dustbins, so the assertion is sound. The reason, that high-density polymers are closely packed and chemically inert, is itself correct and is exactly why the material suits these uses, so the reason correctly explains the assertion.
JEE Main · 2020 · 06 Sep 2020 · Shift 1 · Single correct option