Polymer Technology

51. Caprolactam, a raw material for the manufacture of nylon-6, is produced from

1. Phenol
2. Naphthalene
3. Benzene
4. Pyridine

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52. Catalyst used in the production of high density polythene by low pressure Ziegler process is

1. Aluminium triethyl activated with TiCl4
2. Platinum
3. Molybdenum
4. Nickel

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53. Cation exchange resins (0.3 to 1 mm size) used in water treatment is prepared from _________ resins.

1. Epoxy
2. Phenol formaldehyde
3. Urea formaldehyde
4. Melamine formaldehyde

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54. Cation exchange resins used in water treatment is made from _________ resin.

1. Urea formaldehyde
2. Epoxy
3. Amino
4. Phenolic

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55. Celluloid is

1. Cellulose acetate
2. Regenerated cellulose
3. Cellulose nitrate
4. Cellulose acetate butyrate

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56. Cellulose acetate has very high film permeability among all the polymers of the order of 5000 gm/100 m². Which of the following polymers has the maximum film elongation (of the order of 100%)?

1. Water impermeable cellophane
2. Polythene
3. Cellulose acetate
4. Teflon

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57. Cellulose content in bamboo fibre is about _________ percent.

1. 10
2. 20
3. 50
4. 85

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58. Cellulose is the main constituent of most _________ fibres.

1. Acrylic
2. Spandex
3. Synthetic
4. Natural

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59. Chain growth polymerisation is a process, in which the monomers are added in a chain fashion, and it requires an initiator to produce the free radical. An example of chain growth polymerisation products is

1. Nylon-66
2. Teflon
3. Polyester
4. Bakelite

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60. Collapsible tubes for tooth paste are produced by _________ extrusion.

1. Direct
2. Indirect
3. Impact
4. None of these

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