MCQOPTIONS
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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.
| 201. |
Buna-S is also called____________________? |
| A. | Polyurethane |
| B. | SBR |
| C. | Teflon |
| D. | Bakelite |
| Answer» C. Teflon | |
| 202. |
Buna-S is a _______________ material? |
| A. | Fibrous |
| B. | Plastic |
| C. | Resinous |
| D. | Rubbery |
| Answer» E. | |
| 203. |
Buna-N is also called__________________? |
| A. | Butyl rubber |
| B. | Nitrile rubber |
| C. | Neoprene |
| D. | Thiokol |
| Answer» C. Neoprene | |
| 204. |
Bristles of tooth brushes are made of_______________? |
| A. | Nylon-6 |
| B. | Nylon-66 |
| C. | Polystyrene |
| D. | PVC |
| Answer» C. Polystyrene | |
| 205. |
Branched chair polymers as compared to linear polymers have _________________? |
| A. | Higher melting point |
| B. | Higher tensile strength |
| C. | Lower density |
| D. | None of these |
| Answer» D. None of these | |
| 206. |
Branched chain polymers compared to linear polymers have higher ____________________? |
| A. | Density |
| B. | Tensile strength |
| C. | Melting point |
| D. | Degree of irregularity in atomic packing |
| Answer» E. | |
| 207. |
Benzoyl chloride is not used as a catalyst in the manufacture of___________________? |
| A. | Polystyrene |
| B. | Polyvinyl acetate |
| C. | Polypropylene |
| D. | Polyvinyl chloride-co-vinyl acetate |
| Answer» D. Polyvinyl chloride-co-vinyl acetate | |
| 208. |
Bakelite (phenol-formaldehyde) resin cannot be used as________________? |
| A. | Decorative paint |
| B. | Decorative laminates |
| C. | Electrical insulation |
| D. | Glass reinforced plastics |
| Answer» B. Decorative laminates | |
| 209. |
Bakelite is a/an ______________________? |
| A. | Addition polymer |
| B. | Elastomer |
| C. | Thermoplastic |
| D. | None of these |
| Answer» E. | |
| 210. |
Automobile steering wheels are normally made of__________________? |
| A. | Cellulose acetate |
| B. | Cellulose nitrate |
| C. | PVC |
| D. | High density polythene |
| Answer» B. Cellulose nitrate | |
| 211. |
______________are produced by reacting polybasic acid (e.g. Phthalic anhydride) with polyhydric alcohol (e.g., glycerol) ? |
| A. | Unsaturated polyester |
| B. | Alkyd resins |
| C. | Saturated polyester |
| D. | Amino resins |
| Answer» C. Saturated polyester | |
| 212. |
Antioxidants are added to rubber to protect it from the attack of light, heat & atmospheric ozone. Which of the following is an antioxidant used in rubber ? |
| A. | Carbon |
| B. | Alkylated diphenyl amine |
| C. | Thiokol |
| D. | Magnesium |
| Answer» C. Thiokol | |
| 213. |
Amino resins are used in paper treatment to improve its__________________? |
| A. | Wet tear and bursting strength |
| B. | Folding endurance |
| C. | Wet rub resistance |
| D. | All A., B. & C. |
| Answer» E. | |
| 214. |
All thermoplastic, thermosetting & elastic materials can be processed in a extrusion machine, however it cannot be used for the production of plastic_______________? |
| A. | Filaments |
| B. | Pipes |
| C. | Buckets |
| D. | Tubings |
| Answer» D. Tubings | |
| 215. |
Alkyd resin is a/an___________________? |
| A. | Polyamide |
| B. | Polyester |
| C. | Polyolefin |
| D. | Addition polymer |
| Answer» C. Polyolefin | |
| 216. |
Alkyd resin e.g., glyptal resin formed by Phthalic anhydride and glycerine is not used_______________? |
| A. | For surface coating of automobiles & air crafts |
| B. | For fibre making |
| C. | As plasticiser for PVC & nitrocellulose |
| D. | For film forming materials |
| Answer» C. As plasticiser for PVC & nitrocellulose | |
| 217. |
Alkyd resin cannot be used for making_________________? |
| A. | Plasticiser |
| B. | Paint & varnish |
| C. | Fibers |
| D. | Film forming materials |
| Answer» D. Film forming materials | |
| 218. |
Adipic acid is an intermediate in the manufacture of _____________________? |
| A. | Perspex |
| B. | Nylon-66 |
| C. | Polystyrene |
| D. | Bakelite |
| Answer» C. Polystyrene | |
| 219. |
Addition polymerisation takes place either by a free radical mechanism or ionic mechanism depending on the reagents used. Free radical polymerisation is catalyzed by _______________, which decompose to give free radicals? |
| A. | Organic peroxides |
| B. | Sulphuric acid |
| C. | Hydrofluoric acid |
| D. | None of these |
| Answer» B. Sulphuric acid | |
| 220. |
Addition polymerisation is not involved in the manufacture of_______________? |
| A. | Low density polythene |
| B. | Poly vinyl chloride |
| C. | Polystyrene |
| D. | Polyhexamethylene adipamide |
| Answer» E. | |
| 221. |
Addition of stabiliser during PVC manufacture is done to________________? |
| A. | Improve its impact strength |
| B. | Improve its elasticity |
| C. | Reduce the melt viscosity & glass transition temperature |
| D. | Prevent its thermal degradation |
| Answer» E. | |
| 222. |
Addition of plasticisers to polymers results in partial neutralisation of intermolecular forces of attraction between the macro-molecules thereby increasing its__________________? |
| A. | Tensile strength |
| B. | Chemical resistance |
| C. | Flexibility |
| D. | All A., B. & C. |
| Answer» D. All A., B. & C. | |
| 223. |
Acrylonitrile-butadiene-styrene (ABS) copolymer, which is produced by blending styreneacrylonitrile copolymer with butadiene based elastomer, is a/an__________________? |
| A. | Rigid foam |
| B. | Engineering plastic |
| C. | Thermosetting polymer |
| D. | Spongy rubber |
| Answer» C. Thermosetting polymer | |
| 224. |
Acrilan fibres used for making cloth, carpet & blankets, which is a hard, horny & high melting polymeric material is nothing but____________________? |
| A. | Polyacrylonitrile |
| B. | Polyamide |
| C. | Saturated polyester |
| D. | Alkyd resin |
| Answer» B. Polyamide | |
| 225. |
A copolymer of vinyl and vinylidene chloride is called_____________________? |
| A. | Treylene |
| B. | Orlon |
| C. | Saran |
| D. | Dacron |
| Answer» D. Dacron | |
| 226. |
A copolymer is formed by the combination of two or more monomer molecules_________________? |
| A. | In a chain without the elimination of water |
| B. | With the elimination of small amount of water |
| C. | Of the same monomer by elimination of small molecules of water |
| D. | None of these |
| Answer» B. With the elimination of small amount of water | |
| 227. |
A chain growth polymerisation reaction consists of three different types of reaction namely initiation reaction, propagation reaction & termination reaction. Chain growth polymerisation reaction is not involved in the manufacture of_______________________? |
| A. | Siloxane elastomers |
| B. | Polyamides |
| C. | Vinyl polymers |
| D. | Urea-formaldehyde resins |
| Answer» E. | |
| 228. |
90% of the caprolactam is converted to nylon-6 on its condensation polymerisation in the reactor maintained at a temperature of _____________ °C? |
| A. | -5 |
| B. | 10-30 |
| C. | 250-280 |
| D. | 500-600 |
| Answer» D. 500-600 | |
| 229. |
β – glucose is the monomer of__________________? |
| A. | Cellulose |
| B. | Starch |
| C. | Protein |
| D. | None of these |
| Answer» B. Starch | |