MCQOPTIONS
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MCQOPTIONS
This section includes 607 Mcqs, each offering curated multiple-choice questions to sharpen your Chemical Engineering knowledge and support exam preparation. Choose a topic below to get started.
| 301. |
The synthetic fibres produced from __________ are known as rayon.$? |
| A. | Lignin |
| B. | Cellulose |
| C. | Polyamides |
| D. | Ethylene glycol |
| Answer» C. Polyamides | |
| 302. |
Trade name of __________ is neoprene.$? |
| A. | Polychloroprene |
| B. | Polyisoprene |
| C. | Polytetraflouroethylene |
| D. | Poly vinyl acetate |
| Answer» B. Polyisoprene | |
| 303. |
__________ is not a polyester fibre.$? |
| A. | Terylene |
| B. | Dacron |
| C. | Nylon |
| D. | Polyacrylonitrite |
| Answer» D. Polyacrylonitrite | |
| 304. |
Most commonly used rubber vulcanisation agent is$? |
| A. | Sulphur |
| B. | Bromine |
| C. | Platinum |
| D. | Alumina |
| Answer» B. Bromine | |
| 305. |
Orlan fibre which is used as a wool sub stitute is$? |
| A. | An amorphous polymer |
| B. | A natural polymeric fibre |
| C. | Polyacrylonitrile |
| D. | Polymethylmethacrylate (PMMA) |
| Answer» D. Polymethylmethacrylate (PMMA) | |
| 306. |
Dacron (or terylene) fibres as compared to nylon fibres have$? |
| A. | Better heat & acid resistant properties |
| B. | Poorer resistance to alkalis |
| C. | Poorer dyeability |
| D. | All of the above |
| Answer» E. | |
| 307. |
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 | |
| 308. |
Main constituent of cotton fibre is? |
| A. | Lignin |
| B. | Cellulose |
| C. | Starch |
| D. | Gelatine |
| Answer» C. Starch | |
| 309. |
Celluloid is? |
| A. | Cellulose acetate |
| B. | Regenerated cellulose |
| C. | Cellulose nitrate |
| D. | Cellulose acetate butyrate |
| Answer» D. Cellulose acetate butyrate | |
| 310. |
Buna-S is also called? |
| A. | Polyurathane |
| B. | SBR |
| C. | Teflon |
| D. | Bakelite |
| Answer» C. Teflon | |
| 311. |
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%) ?? |
| A. | Water impermeable cellophane |
| B. | Polythene |
| C. | Cellulose acetate |
| D. | Teflon |
| Answer» C. Cellulose acetate | |
| 312. |
Thermosetting polymers as compared to thermoplastic polymers? |
| A. | Are formed by addition polymerisation |
| B. | Have three dimensional structure |
| C. | Have linear structure |
| D. | None of these |
| Answer» C. Have linear structure | |
| 313. |
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 | |
| 314. |
Reaction of dimethyl terephthalate (DMT) and ethylene glycol produces? |
| A. | Nylon-6 |
| B. | Dacron |
| C. | Polyester |
| D. | PVC |
| Answer» C. Polyester | |
| 315. |
Most commonly used rubber vulcanisation agent is? |
| A. | Sulphur |
| B. | Bromine |
| C. | Platinum |
| D. | Alumina |
| Answer» B. Bromine | |
| 316. |
Orlan fibre which is used as a wool sub stitute is? |
| A. | An amorphous polymer |
| B. | A natural polymeric fibre |
| C. | Polyacrylonitrile |
| D. | Polymethylmethacrylate (PMMA) |
| Answer» D. Polymethylmethacrylate (PMMA) | |
| 317. |
The synthetic fibres produced from __________ are known as rayon.? |
| A. | Lignin |
| B. | Cellulose |
| C. | Polyamides |
| D. | Ethylene glycol |
| Answer» C. Polyamides | |
| 318. |
Trade name of __________ is neoprene.? |
| A. | Polychloroprene |
| B. | Polyisoprene |
| C. | Polytetraflouroethylene |
| D. | Poly vinyl acetate |
| Answer» B. Polyisoprene | |
| 319. |
__________ is not a polyester fibre.? |
| A. | Terylene |
| B. | Dacron |
| C. | Nylon |
| D. | Polyacrylonitrite |
| Answer» D. Polyacrylonitrite | |
| 320. |
Dacron (or terylene) fibres as compared to nylon fibres have? |
| A. | Better heat & acid resistant properties |
| B. | Poorer resistance to alkalis |
| C. | Poorer dyeability |
| D. | All of the above |
| Answer» E. | |
| 321. |
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? |
| A. | Nylon-66 |
| B. | Teflon |
| C. | Polyester |
| D. | Bakelite |
| Answer» C. Polyester | |
| 322. |
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 of the above |
| Answer» E. | |
| 323. |
Vulcanisation of raw rubber makes it? |
| A. | Soft |
| B. | Less elastic |
| C. | Plastic |
| D. | Tacky |
| Answer» C. Plastic | |
| 324. |
Low density polythene as compared to high density polythene is? |
| A. | Harder |
| B. | Tougher |
| C. | Chemically inert |
| D. | More flexible |
| Answer» E. | |
| 325. |
Polymethyl methacrylate, which is an acrylic resin, is also called? |
| A. | Thiokol |
| B. | Plexiglass or lucite |
| C. | Dacron |
| D. | Teflon |
| Answer» C. Dacron | |
| 326. |
Which of the following is generally not used as eord for synthetic rubber tyre casing? |
| A. | Dacron |
| B. | Nylon |
| C. | Cellulose |
| D. | None of these |
| Answer» D. None of these | |
| 327. |
Natural rubber is obtained from latex, which is a colloidal dispersion of rubber in water. Which of the following is used as a coagulant in latex? |
| A. | Ammonium alum |
| B. | Potassium alum |
| C. | Both A & B |
| D. | Neither A nor B |
| Answer» D. Neither A nor B | |
| 328. |
Which of the following polymers shows the highest anti-tacking properties? |
| A. | Melamine formaldehyde resin |
| B. | Phenolic resin |
| C. | Epoxy resin |
| D. | Alkyd resin |
| Answer» B. Phenolic resin | |
| 329. |
Which of the following is not a thermoplastic material? |
| A. | Epoxy polymer |
| B. | PVC |
| C. | Polystyrene |
| D. | Polythene |
| Answer» B. PVC | |
| 330. |
Which of the following natural bio polymers are formed as a result of polymerisation of amino-acids? |
| A. | Starch |
| B. | Cellulose |
| C. | Proteins |
| D. | Nucleic acids |
| Answer» D. Nucleic acids | |
| 331. |
Polymerisation product of C‚ÇÇF‚ÇÑ (carbon tetraflouride) is called P.T.F.E. (poly chloro tetra flouro ethylene). It is also called$ |
| A. | Polyurethane |
| B. | Silicone rubber |
| C. | Teflon |
| D. | Epoxy resin |
| Answer» D. Epoxy resin | |
| 332. |
Which of the following low molecular weight (<10‚Å¥ ), soft & waxy polymer is used in chewing gum?$ |
| A. | Cellulose acetate |
| B. | Polyvinyl acetate |
| C. | Thiokol |
| D. | PVC |
| Answer» C. Thiokol | |
| 333. |
Antioxidants are added to rubber to protect it from the attack of light, heat & atmospheric ozone. Which of the following is an antioxident used in rubber? |
| A. | Carbon |
| B. | Alkylated diphenyl amine |
| C. | Thiokol |
| D. | Magnesium |
| Answer» C. Thiokol | |
| 334. |
Which of the following polymers has the tendency of decomposing before melting? |
| A. | Polystyrene |
| B. | Nylon |
| C. | PVC |
| D. | None of these |
| Answer» D. None of these | |
| 335. |
Addition polymerisation takes place either by a free radical mechanism or ionic machanism depending on the reagents used. Free radical polymerisation is catelyzed by __________ , which decompose to give free radicals. |
| A. | Organic peroxides |
| B. | Sulphuric acid |
| C. | Hydroflouric acid |
| D. | None of these |
| Answer» B. Sulphuric acid | |
| 336. |
Which of the following polymers belong to the class of formaldehyde resin? |
| A. | Melamine resins |
| B. | Teflon |
| C. | Dacron |
| D. | None of these |
| Answer» B. Teflon | |
| 337. |
Which of the following is a copolymer? |
| A. | PVC |
| B. | Bakelite |
| C. | Polythene |
| D. | Teflon |
| Answer» C. Polythene | |
| 338. |
Plasticisers are high boiling liquids added to plastic polymers to impart toughness and flexibility at ordinary temperature. Which of the following is not a plasticiser? |
| A. | Ethylene glycol |
| B. | Stearic acid estors |
| C. | Tricresyl phosphate |
| D. | Esters of phthalic acid |
| Answer» B. Stearic acid estors | |
| 339. |
Which of the following is not an elastomer? |
| A. | Polyisoprene |
| B. | Neoprene |
| C. | Nitrile-butadiene |
| D. | None of these |
| Answer» E. | |
| 340. |
Nylon-66 is manufactured from |
| A. | Adipic acid and hexamenthylene diamine |
| B. | Caprolactum |
| C. | Maleic anhydride and hexamethylene diamine |
| D. | Dimethyl terephthalate (DMT) and ethylene glycol |
| Answer» B. Caprolactum | |
| 341. |
Which of the following polymers does not belong to the class of polyacrylate polymer? |
| A. | PMMA |
| B. | Polyacrylonitrile |
| C. | Polyethyl acrylate |
| D. | None of these |
| Answer» E. | |
| 342. |
Which of the following additives are added to plastics to make it impervious to X-rays? |
| A. | Asbestos |
| B. | Barium salt |
| C. | Carborundum |
| D. | Phthalic acid |
| Answer» C. Carborundum | |
| 343. |
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 | |
| 344. |
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) | |
| 345. |
Which of the following is an elastomer ? |
| A. | Thiokol |
| B. | Phenol formaldehyde |
| C. | Urea formaldehyde |
| D. | Polystyrene |
| Answer» B. Phenol formaldehyde | |
| 346. |
The only natural thermoplastic resin, which is a product of animal life is |
| A. | rosin |
| B. | shellac |
| C. | amber |
| D. | copal |
| Answer» C. amber | |
| 347. |
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. | |
| 348. |
Which of the following is not a condensation polymer ? |
| A. | Bakelite |
| B. | Melamine polymer |
| C. | Polymethylmethacrylate (PMMA) |
| D. | None of these |
| Answer» D. None of these | |
| 349. |
Phosphates (e.g., triceresyl, tributyl, tetrabutyl, tripheyl etc.) are added to polymers to act as |
| A. | hardeners |
| B. | anti-shrinkage agents |
| C. | plasticisers |
| D. | transparency improver |
| Answer» D. transparency improver | |
| 350. |
Plastic tubes & pipes are generally made by __________ moulding. |
| A. | injection |
| B. | transfer |
| C. | extrusion |
| D. | compression |
| Answer» D. compression | |