Consider the Assertion and Reason given below.

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. Ethene polymerized in the presence of Ziegler Natta Catalyst at high temperature and pressure is used to make buckets and dustbins.

  1. (A) is correct but (R) is wrong.

  2. Both (A) and (R) are correct and (R) is not the correct explanation of (A).

  3. Both (A) and (R) are correct but (R) is the correct explanation of (A).

  4. (A) and (R) both are wrong.

Correct Option: , 3

Solution:

High density polythene is formed when addition polymerisation of ethene takes place in the presence of a catalyst (Ziegler Natta catalyst) at a high temp. (333K to $349 \mathrm{~K}$ ) and under low pressure (6-7 atm).

High density polyethene is hard and chemically inert due to close packing thats why used to make buckets and dustbins.

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