Match List - I with List - II.

List-I (Polymer)	List-II (Used in)
A Bakelite	I Radio and television cabinets
B Glyptal	II Electrical switches
C PVC	III Paints and Lacquers
D Polystyrene	IV Water pipes

Let us match each polymer with its correct application.

A. Bakelite → II (Electrical switches)

Bakelite is a thermosetting polymer (phenol-formaldehyde resin) with high heat resistance and electrical insulation properties. It is widely used for making electrical switches, plugs, and handles of utensils.

B. Glyptal → III (Paints and Lacquers)

Glyptal is a polyester resin made from ethylene glycol and phthalic acid. It is primarily used in making paints, lacquers, and surface coatings due to its good adhesion and film-forming properties.

C. PVC → IV (Water pipes)

PVC (polyvinyl chloride) is a versatile thermoplastic polymer. It is extensively used for making water pipes, raincoats, and vinyl flooring due to its durability, chemical resistance, and low cost.

D. Polystyrene → I (Radio and television cabinets)

Polystyrene is a rigid thermoplastic polymer used for making radio and television cabinets, toys, and packaging materials due to its good insulating properties and ease of moulding.

The correct matching is: A-(II), B-(III), C-(IV), D-(I)

Hence, the correct answer is Option B.