Multiple choice

Match the Column – I (polymers) with Column – II (uses) and select the correct answer using the codes given below ||| |---|---| |Column-I (polymers)|Column-II (their uses)| |P. Ticona|1. making of squeeze bottles| |Q. Zenite |2. making of carbon fibres| |R. Polystyrene|3. making of electrical parts| |S. Polyacrylonitrile|4. making of injection molded parts|

  1. P - 4, Q - 3, R - 1, S - 2

  2. P - 3, Q - 4, R - 1, S - 2

  3. P - 4, Q - 1, R - 3, S - 2

  4. P - 1, Q - 2, R - 4, S - 3

  5. P - 4 Q - 2, R - 1, S - 3
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B Correct answer
Explanation

Ticona, brand name of Liquid-crystal polymers (LCPs), is a class of aromatic polyester polymers. They are extremely unreactive and inert, and highly resistant to fire. Because of their various properties, LCPs are useful for electrical and mechanical parts, food containers, and any other applications requiring chemical inertness and high strength. Zenite is a liquid crystal polymer with 45% glass fiber filler, originally developed by DuPont, which is used for injection molded parts with intricate features. Polystyrene (PS) has very good thermal stability and thus used in the making of squeeze bottles. Polyacrylonitrile (PAN) is used for making clothes and fabrics like sweaters, hats, yarns, rugs etc. and as a precursor of carbon fibres. Hence, the correct sequence using the codes is P - 3, Q -4, R - 1, S - 2

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