Question

Low-density polyethene (LDP) is used in the insulation of electricity carrying wires and manufacture of flexible pipes and squeeze bottles because:

• A. it is tough, hard and rigid
• B. it is chemically inert, tough, flexible and poor conductor of electricity
• C. it is very tough, good conductor of electricity and flexible
• D. it is chemically inert, very soft, water absorbent and poor conductor of heat

Answer 1

The correct option is B it is chemically inert, tough, flexible and poor conductor of electricity

Method of the preparation of low-density polythene-

It is obtained by the polymerisation of ethene under high pressure of $1000$ to $2000$ atmospheres at a temperature of $350K$ to $570K$ in the presence of traces of dioxygen or a peroxide initiator (catalyst). The low-density polyethene (LDP) obtained through the free radical addition and H-atom abstraction has highly branched structure. Low-density polyethene is chemically inert and tough but flexible and a poor conductor of electricity.

The correct option is [B].