Match List I with List II.

A-q; B-r; C-s; D-p

The correct answer is option 1. A-q; B-r; C-s; D-p.

Let us go through each polymer and its associated application to understand the correct matches.

1. Nylon 6 (A) - Ropes (q):

Nylon 6 is a type of synthetic polyamide with high tensile strength, flexibility, and resistance to abrasion and wear. Due to these properties, Nylon 6 is commonly used to make ropes, fishing lines, and other items that require strong, durable fibers.

2. Bakelite (B) - Electrical fittings (r):

Bakelite is a thermosetting phenol-formaldehyde resin, known for its high resistance to heat and electrical non-conductivity. Because of these properties, Bakelite is extensively used in the manufacture of electrical fittings, such as switches, sockets, and insulators, where insulation and heat resistance are crucial.

3. Polythene (C) - Packing material (s):

Polythene (polyethylene) is a versatile and widely used plastic. It is lightweight, flexible, moisture-resistant, and relatively inexpensive. These properties make it ideal for use as packing material, including plastic bags, films, bubble wrap, and other packaging products.

4. Buna-N (D) - Making oil seals, tank linings (p):

Buna-N (nitrile rubber) is a synthetic rubber copolymer made from acrylonitrile and butadiene. It is known for its excellent resistance to oils, fuels, and other chemicals. Due to its oil and chemical resistance, Buna-N is widely used for making oil seals, gaskets, hoses, and tank linings that need to withstand harsh environments and prevent leakage.

To summarize, each polymer is specifically suited to its application due to its unique properties:

Nylon 6 is strong and durable, making it ideal for ropes.

Bakelite is an excellent insulator and heat-resistant, suitable for electrical fittings.

Polythene is flexible and moisture-resistant, perfect for packing materials.

Buna-N is resistant to oils and chemicals, making it suitable for oil seals and tank linings.

Therefore, the correct matches are A-q; B-r; C-s; D-p