MHT CET · Chemistry · Polymers

Which among the following statements is NOT true for \(\mathrm{LDP}\) ?

A It needs \(\mathrm{O}_2\) or peroxide as initiator synthesis process.
B It is a branched chain polymer.
C It needs low pressure about \(6-7\) atm in synthesis process.
D It has low melting point than HDP.

Verified Solution

Answer & Solution

Correct Answer

(C) It needs low pressure about \(6-7\) atm in synthesis process.

Step-by-step Solution

Detailed explanation

LDP is prepared by polymerization of ethylene under high pressure \((1000-2000 \mathrm{~atm})\) and temperature
\((350-570 \mathrm{~K})\) in presence of traces of \(\mathrm{O}_2\) or peroxide as initiator.

Apply the relevant identity from the chapter and substitute the values established in the previous step, keeping the original constraint in view.

Use the simplified expression to isolate the unknown, then plug the result back into the question setup to confirm the working is internally consistent.

Cross-check against a boundary or limiting case. Both the dimensional balance and the qualitative behaviour at the extreme should agree with the candidate answer.

Combine the steps above to identify the correct option. The remaining choices each fail at least one of the consistency, dimensional, or boundary checks.

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