Polymer Technology

121. Neoprene is the trade name of

1. Polyurethane
2. Phenol formaldehyde
3. Polychlorophrene
4. Styrene butadiene rubber (SBR)

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122. Neoprene which is used for making shoe heels & belts is superior to natural rubber in its stability to aerial oxidation and resistance to oils & other solvents. The monomer used for making neoprene is

1. Chloroethane
2. Chloroprene
3. Isoprene
4. None of these

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123. Nitrile rubber is produced by the polymerisation of

1. Acrylonitrile & butadiene
2. Acrylonitrile & styrene
3. Isobutylene & isoprene
4. None of these

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124. Non sulphonated hard bakelites are not used for making

1. Ion-exchange resins
2. Fountain pen barrels
3. Formica table tops
4. Combs

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125. Nylon-6 as compared to nylon 66 has lower

1. Abrasion resistance
2. Thermal stability
3. Adhesion to rubber
4. Hardness

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126. Nylon-6 as compared to nylon-66 is

1. Harder
2. More abrasion resistant
3. Having higher melting point
4. None of these

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127. Nylon-6 is a

1. Polyamide
2. Thermosetting resin
3. Polyester
4. None of these

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128. Nylon-6 is manufactured from

1. Caprolactam
2. Adipic acid and Hexamethylenediamine
3. Maleic anhydride and Hexamethylenediamine
4. Sebacic acid and Hexamethylenediamine

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129. Nylon-6, 10 which is used for bristles making is superior to nylon 6, 6 due to its lower water absorption capacity, is a/an

1. Polyester
2. Polyamide
3. Polyisoprene
4. Polystyrene

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130. Nylon-66 compared to nylon-6 has

1. Lower melting point
2. More abrasion resistant properties
3. Higher hardness
4. All (A), (B) and (C)

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