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

Which among the following statements is NOT true for $\mathrm{LDP}$ ?
  1. It needs $\mathrm{O}_2$ or peroxide as initiator synthesis process.
  2. It is a branched chain polymer.
  3. It needs low pressure about $6-7$ atm in synthesis process.
  4. It has low melting point than HDP.

Solution

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.

Asked in: MHT CET 2023 (12 May Shift 2)

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