MCQOPTIONS
Saved Bookmarks
MCQOPTIONS
This section includes 229 Mcqs, each offering curated multiple-choice questions to sharpen your Chemical Engineering knowledge and support exam preparation. Choose a topic below to get started.
| 101. |
Phenol formaldehyde is produced by condensation polymerisation. It is also known as_________________? |
| A. | Teflon |
| B. | Bakelite |
| C. | Polyester |
| D. | Nylon-66 |
| Answer» C. Polyester | |
| 102. |
Phenol formaldehyde __________________? |
| A. | Employs addition polymerisation |
| B. | Employs condensation polymerisation |
| C. | Is a monomer |
| D. | Is an abrasive material |
| Answer» C. Is a monomer | |
| 103. |
Perspex can be used as a substitute of glass. Its monomer is__________________? |
| A. | Methyl methacrylate |
| B. | DMT |
| C. | Butadiene |
| D. | Tetrafluoroethylene |
| Answer» B. DMT | |
| 104. |
Peptizers like aromatic mercaptans (e.g. thiophenes) are added in rubber to _________________? |
| A. | Protect rubber goods from attack by oxygen & ozone present in the atmosphere |
| B. | Reduce its viscosity to permit easier processing |
| C. | Reduce the time of vulcanisation and quantity of vulcanising agent |
| D. | Increase its viscosity |
| Answer» C. Reduce the time of vulcanisation and quantity of vulcanising agent | |
| 105. |
Paper like thin plastic articles can be produced by_________________? |
| A. | Blow moulding |
| B. | Vacuum thermo forming |
| C. | Injection moulding |
| D. | None of these |
| Answer» C. Injection moulding | |
| 106. |
Out of all the elastomers, natural rubber has the longest elongation range & flexibility of the order of _______________ percent? |
| A. | 1-1000 |
| B. | 1000-1500 |
| C. | 1500-2000 |
| D. | 2000-2500 |
| Answer» B. 1000-1500 | |
| 107. |
Orion is_________________? |
| A. | A copolymer |
| B. | A condensation polymer |
| C. | Obtained by polymerising vinyl cyanide |
| D. | All A., B. and C. |
| Answer» D. All A., B. and C. | |
| 108. |
Orlan fibre which is used as a wool substitute is __________________? |
| A. | An amorphous polymer |
| B. | A natural polymeric fibre |
| C. | Polyacrylonitrile |
| D. | Poly-methyl-methacrylate (PMMA) |
| Answer» D. Poly-methyl-methacrylate (PMMA) | |
| 109. |
____________ of SBR is adversely affected, if more quantity of styrene is added to butadiene during its co-polymerisation to produce SBR? |
| A. | Percent elongation |
| B. | Resilience |
| C. | Freezing point |
| D. | Strength |
| Answer» C. Freezing point | |
| 110. |
Nylon-66 is manufactured from ____________________? |
| A. | Adipic acid and Hexamethylene diamine |
| B. | Caprolactam |
| C. | Maleic anhydride and Hexamethylene diamine |
| D. | Dimethyl terephthalate (DMT) and ethylene glycol |
| Answer» B. Caprolactam | |
| 111. |
Nylon-66 compared to nylon-6 has __________________? |
| A. | Lower melting point |
| B. | More abrasion resistant properties |
| C. | Higher hardness |
| D. | All A., B. and C. |
| Answer» D. All A., B. and C. | |
| 112. |
Nylon-66 is a polyamide of __________________? |
| A. | Hexamethylene diamine and adipic acid |
| B. | Adipic acid and methyl amine |
| C. | Vinyl chloride and formaldehyde |
| D. | None of these |
| Answer» B. Adipic acid and methyl amine | |
| 113. |
Nylon-6 is manufactured from _______________? |
| A. | Caprolactam |
| B. | Adipic acid and Hexamethylenediamine |
| C. | Maleic anhydride and Hexamethylenediamine |
| D. | Sebacic acid and Hexamethylenediamine |
| Answer» B. Adipic acid and Hexamethylenediamine | |
| 114. |
Nylon-6 is a_________________? |
| A. | Polyamide |
| B. | Thermosetting resin |
| C. | Polyester |
| D. | None of these |
| Answer» B. Thermosetting resin | |
| 115. |
Nylon-6 as compared to nylon-66 is_________________? |
| A. | Harder |
| B. | More abrasion resistant |
| C. | Having higher melting point |
| D. | None of these |
| Answer» E. | |
| 116. |
Nylon-6 as compared to nylon 66 has lower ? |
| A. | Abrasion resistance |
| B. | Thermal stability |
| C. | Adhesion to rubber |
| D. | Hardness |
| Answer» B. Thermal stability | |
| 117. |
Non sulphonated hard bakelites are not used for making _______________________? |
| A. | Ion-exchange resins |
| B. | Fountain pen barrels |
| C. | Formica table tops |
| D. | Combs |
| Answer» B. Fountain pen barrels | |
| 118. |
Nitrile rubber is produced by the polymerisation of_________________? |
| A. | Acrylonitrile & butadiene |
| B. | Acrylonitrile & styrene |
| C. | Isobutylene & isoprene |
| D. | None of these |
| Answer» B. Acrylonitrile & styrene | |
| 119. |
Neoprene is the trade name of________________? |
| A. | Polyurethane |
| B. | Phenol formaldehyde |
| C. | Polychlorophrene |
| D. | Styrene butadiene rubber (SBR) |
| Answer» D. Styrene butadiene rubber (SBR) | |
| 120. |
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_________________? |
| A. | Chloroethane |
| B. | Chloroprene |
| C. | Isoprene |
| D. | None of these |
| Answer» C. Isoprene | |
| 121. |
Neoprene is rendered non-inflammable, because of_____________________? |
| A. | Its cross-linked structure |
| B. | Its linear chain structure |
| C. | The presence of chlorine atoms in its monomer |
| D. | The absence of chlorine atoms in its monomer |
| Answer» D. The absence of chlorine atoms in its monomer | |
| 122. |
Neoprene is chemically known as _________________? |
| A. | Polybutadiene |
| B. | Styrene butadiene rubber (SBR) |
| C. | Polyurethane |
| D. | Poly chloroprene |
| Answer» E. | |
| 123. |
Neoprene is a___________________? |
| A. | Monomer |
| B. | Synthetic rubber |
| C. | Polyester |
| D. | None of these |
| Answer» C. Polyester | |
| 124. |
_____________ moulding is used for shaping of thermosetting plastics exclusively? |
| A. | Compression |
| B. | Injection |
| C. | Transfer |
| D. | Extrusion |
| Answer» D. Extrusion | |
| 125. |
Most of the plastics are safe to be used upto a maximum temperature of ______________ °C? |
| A. | 100 |
| B. | 150 |
| C. | 350 |
| D. | 450 |
| Answer» C. 350 | |
| 126. |
Most of the fibre forming polymers are crystalline in nature, one of the exceptions being ______________ which is amorphous in nature? |
| A. | Nylon |
| B. | Polyacrylonitrile |
| C. | Polypropylene |
| D. | Polyester |
| Answer» C. Polypropylene | |
| 127. |
Most commonly used rubber vulcanisation agent is __________________? |
| A. | Sulphur |
| B. | Bromine |
| C. | Platinum |
| D. | Alumina |
| Answer» B. Bromine | |
| 128. |
Molecular weights of plastics ranges from_______________? |
| A. | 1000 to 5000 |
| B. | 5000 to 1000 |
| C. | 20000 to 25000 |
| D. | 109 to 1011 |
| Answer» D. 109 to 1011 | |
| 129. |
Molecular weight of polymers are in the range of__________________? |
| A. | 10 to 103 |
| B. | 102-107 |
| C. | 107-109 |
| D. | 109-1011 |
| Answer» C. 107-109 | |
| 130. |
Melt spinning of polymers involves the forcing of polymer melt through spinnerates (fine holes) into an atmosphere kept at a temperature lower than the melting point of the polymer, which causes the fine diameter polymer melt to harden into filaments. Melt spinning is not used in case of the _____________ fibres? |
| A. | Acrylic |
| B. | Polyester |
| C. | Nylon 6:6 |
| D. | Polypropylene |
| Answer» B. Polyester | |
| 131. |
Melamine formaldehyde resin which has a very high anti tacking properties, is not used for the ___________________? |
| A. | Electrical insulation purpose |
| B. | Tanning of leather |
| C. | Strengthening of plaster of Paris |
| D. | Decorative laminates |
| Answer» D. Decorative laminates | |
| 132. |
Maximum consumption of polymers is in___________________? |
| A. | Electrical insulation |
| B. | Toys making |
| C. | Coating and films |
| D. | Packaging |
| Answer» D. Packaging | |
| 133. |
Mastication of rubber means_______________? |
| A. | Its softening |
| B. | A treatment to retard its deterioration due to oxidation |
| C. | Improving its curing rate |
| D. | Depression of its freezing point |
| Answer» B. A treatment to retard its deterioration due to oxidation | |
| 134. |
Main constituent of natural rubber is_________________? |
| A. | Polystyrene |
| B. | Polyisoprene |
| C. | Polybutadiene |
| D. | Poly chloroprene |
| Answer» C. Polybutadiene | |
| 135. |
Main constituent of cotton fiber is __________________? |
| A. | Lignin |
| B. | Cellulose |
| C. | Starch |
| D. | Gelatine |
| Answer» C. Starch | |
| 136. |
Low pressure Zeigler process of polythene manufacture____________________? |
| A. | Employs a pressure of 30 kgf/cm2 |
| B. | Achieves an yield of 95-98% based on ethylene |
| C. | Produces very low density polythene |
| D. | Does not use any catalyst for polymerisation |
| Answer» C. Produces very low density polythene | |
| 137. |
Low pressure Zeigler process for the manufacture of polythene uses a catalyst which is_______________________? |
| A. | Ni |
| B. | V2O5 |
| C. | Fe |
| D. | Aluminium triethyl combined with titanium tetrachloride |
| Answer» E. | |
| 138. |
Low density polythene as compared to high density polythene is____________________? |
| A. | Harder |
| B. | Tougher |
| C. | Chemically inert |
| D. | More flexible |
| Answer» E. | |
| 139. |
Liners of bags are usually made of ____________________? |
| A. | Polythene |
| B. | PVC |
| C. | Polypropylene |
| D. | Polyesters |
| Answer» D. Polyesters | |
| 140. |
Linear polymers are normally_________________? |
| A. | Thermosetting |
| B. | Thermoplastic |
| C. | Elastometric |
| D. | Having extremely high softening point |
| Answer» C. Elastometric | |
| 141. |
Lavatory cisterns are normally made of ________________? |
| A. | Expanded polystyrene |
| B. | Saturated polyester |
| C. | Perspex |
| D. | PVC |
| Answer» B. Saturated polyester | |
| 142. |
________________ is produced by polymerisation of chloroprene? |
| A. | Thiokol (a polysulphide rubber) |
| B. | Butyl rubber |
| C. | Neoprene |
| D. | Polyurethane rubber |
| Answer» D. Polyurethane rubber | |
| 143. |
_____________ is not a polyester fiber? |
| A. | Terylene |
| B. | Dacron |
| C. | Nylon |
| D. | Polyacrylonitrile |
| Answer» D. Polyacrylonitrile | |
| 144. |
_______________________ is not a condensation polymer ? |
| A. | Teflon |
| B. | Nylon-66 |
| C. | Dacron |
| D. | Polystyrene |
| Answer» B. Nylon-66 | |
| 145. |
_______________ is normally used for the manufacture of refrigerator components and transistor parts? |
| A. | Polypropylene |
| B. | Polystyrene |
| C. | Polyester |
| D. | Polyurethane |
| Answer» C. Polyester | |
| 146. |
______________ is an addition polymer ? |
| A. | Nylon |
| B. | Bakelite |
| C. | Polythene |
| D. | None of these |
| Answer» D. None of these | |
| 147. |
_____________ is a thermosetting plastic ? |
| A. | PVC |
| B. | Polythene |
| C. | Bakelite |
| D. | Polystyrene |
| Answer» D. Polystyrene | |
| 148. |
_______________ is a natural fiber? |
| A. | Cellulose |
| B. | Dacron |
| C. | Nylon-6 |
| D. | None of these |
| Answer» B. Dacron | |
| 149. |
_____________ is a homopolymer? |
| A. | Neoprene |
| B. | Bakelite |
| C. | Nylon-66 |
| D. | Terylene |
| Answer» B. Bakelite | |
| 150. |
_______________ is a copolymer ? |
| A. | Nylon-66 |
| B. | Polypropylene |
| C. | PVC |
| D. | Poly tetra fluoro ethylene |
| Answer» B. Polypropylene | |