MCQOPTIONS
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MCQOPTIONS
This section includes 565 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. |
*/*_Linde process of gas liquefaction employs? |
| A. | Exchange of heat with colder stream |
| B. | Adiabatic expansion through a throttle valve (Joule-Thomson expansion) |
| C. | Adiabatic expansion against a piston or in a turbine |
| D. | Merely compressing the gas beyond its critical pressure |
| Answer» C. Adiabatic expansion against a piston or in a turbine | |
| 202. |
*/*_The main use of HCl is in the? |
| A. | Drilling of petroleum wells and pickling of steel sheets |
| B. | Manufacture of cationic detergent |
| C. | Treatment of spent fuel of nuclear reactor |
| D. | None of these |
| Answer» B. Manufacture of cationic detergent | |
| 203. |
*/*_Terylene is? |
| A. | Same as dacron |
| B. | A polyester |
| C. | Both A & B |
| D. | Neither A nor B |
| Answer» D. Neither A nor B | |
| 204. |
*/*_Teflon is? |
| A. | Phenol formaldehyde |
| B. | An inorganic polymer |
| C. | Poly tetrafluoroethylene (P.T.F.E.) |
| D. | A monomer |
| Answer» D. A monomer | |
| 205. |
*/*_Laboratory glass wares which reacts with hydroflouric acid, are made of the __________ glass.? |
| A. | Lead |
| B. | Borosilicate |
| C. | Soda lime |
| D. | Alkali silicate |
| Answer» C. Soda lime | |
| 206. |
*/*_Bromine content in sea water may be around __________ ppm.? |
| A. | 70 |
| B. | 640 |
| C. | 1875 |
| D. | 2500 |
| Answer» B. 640 | |
| 207. |
*/*_Which of the following processes can remove both temporary as well as permanent hardness of water?? |
| A. | Filtration |
| B. | Boiling |
| C. | Distillation |
| D. | None of these |
| Answer» D. None of these | |
| 208. |
*/*_The metallic aluminium is obtained from pure alumina in the presence of fused cryolite by? |
| A. | Electrolysis |
| B. | Electrolytic reduction |
| C. | Electrolytic oxidation |
| D. | None of these |
| Answer» C. Electrolytic oxidation | |
| 209. |
*/*_Fish contains about __________ percent oil.? |
| A. | 5 |
| B. | 10 |
| C. | 20 |
| D. | 35 |
| Answer» D. 35 | |
| 210. |
*/*___________ glass has the lowest co-efficient of thermal expansion and hence is more heat resistant.? |
| A. | Pyrex |
| B. | Soda lime |
| C. | Lead |
| D. | High silica |
| Answer» B. Soda lime | |
| 211. |
%_Glass is_% |
| A. | Mainly CaO |
| B. | Subjected to galvanising |
| C. | A super cooled liquid |
| D. | All of the above |
| Answer» D. All of the above | |
| 212. |
%_Gun powder uses_% |
| A. | Sulphur |
| B. | Charcoal |
| C. | Potassium nitrate |
| D. | All of the above |
| Answer» E. | |
| 213. |
%_A substance produced by a living organism and capable of anti-microbial activity is called a/an_% |
| A. | Antibiotic |
| B. | Antiseptic |
| C. | Disinfectant |
| D. | None of these |
| Answer» B. Antiseptic | |
| 214. |
%_Percentage of glycerene present in the spent lye obtained during soap manufacture is about_% |
| A. | 0.5 |
| B. | 5 |
| C. | 20 |
| D. | 35 |
| Answer» C. 20 | |
| 215. |
%_Average sulphur content in Indian pyrites is about __________ percent._% |
| A. | 15 |
| B. | 35 |
| C. | 55 |
| D. | 70 |
| Answer» C. 55 | |
| 216. |
%___________ is used as a catalyst in fat splitting._% |
| A. | ZnO |
| B. | Ni |
| C. | V‚ÇÇO‚ÇÖ |
| D. | FeO |
| Answer» B. Ni | |
| 217. |
%_Fat dispersed in water is exemplified by_% |
| A. | Colloids |
| B. | Gel |
| C. | Butter |
| D. | Emulsion |
| Answer» D. Emulsion | |
| 218. |
%_Le-Blanc process is a primitive process for the manufacture of_% |
| A. | Caustic soda |
| B. | Soda ash |
| C. | Bromine from sea water |
| D. | Hydrochloric acid |
| Answer» C. Bromine from sea water | |
| 219. |
%_Cement setting under water employs a/an __________ process._% |
| A. | Hydration |
| B. | Decomposition |
| C. | Oxidation |
| D. | Reduction |
| Answer» B. Decomposition | |
| 220. |
%_Chloramines are used in water treatment for_% |
| A. | Disinfection and control of taste & odour |
| B. | Corrosion control |
| C. | Removing turbidity |
| D. | Control of bacteria |
| Answer» B. Corrosion control | |
| 221. |
%_90% of the caprolactum is converted to nylon-6 on its condensation polymerisation in the reactor maintained at __________ °C._% |
| A. | <0 |
| B. | 10-30 |
| C. | 250-280 |
| D. | 500-600 |
| Answer» C. 250-280 | |
| 222. |
%_Styrene butadiene rubber (SBR) is_% |
| A. | A natural rubber |
| B. | A synthetic polymer |
| C. | A synthetic monomer |
| D. | Another name of silicone rubber |
| Answer» C. A synthetic monomer | |
| 223. |
%_Phosphoric acid is prepared from_% |
| A. | Cryolite |
| B. | Chalcopyrite |
| C. | Rock phosphate |
| D. | None of these |
| Answer» D. None of these | |
| 224. |
%_Phenol formaldehyde_% |
| A. | Employs addition polymerisation |
| B. | Employs condensation polymerisation |
| C. | Is a monomer |
| D. | Is an abrasive material |
| Answer» C. Is a monomer | |
| 225. |
%_Parathion and Malathion are_% |
| A. | Pesticides |
| B. | Plasticisers for unsaturated polysters |
| C. | Pain-relieving drugs (analgesic) |
| D. | Tranquilisers |
| Answer» B. Plasticisers for unsaturated polysters | |
| 226. |
%_Nylon-6 is a_% |
| A. | Polyamide |
| B. | Thermosetting resin |
| C. | Polyester |
| D. | None of these |
| Answer» B. Thermosetting resin | |
| 227. |
%_Sodium chloride content in sea water is about __________ gms/litre._% |
| A. | 2 |
| B. | 10 |
| C. | 25 |
| D. | 50 |
| Answer» D. 50 | |
| 228. |
%_Inversion of sucrose produces_% |
| A. | Fructose |
| B. | Glucose |
| C. | Both A & B |
| D. | Neither A nor B |
| Answer» C. Both A & B | |
| 229. |
%_Hollander beater used during paper pulp manufacture does not facilitate the __________ of fibre._% |
| A. | Cutting |
| B. | Fibrillation |
| C. | Hydration |
| D. | Strengthening |
| Answer» E. | |
| 230. |
%_The most stable allotropic form of phosphorous is the __________ phosphorous._% |
| A. | White |
| B. | Black |
| C. | Yellow |
| D. | Red |
| Answer» C. Yellow | |
| 231. |
%_Concentration of NaOH solution produced by diaphragm electrolytic cell is about __________ percent._% |
| A. | 10 |
| B. | 25 |
| C. | 50 |
| D. | 98 |
| Answer» B. 25 | |
| 232. |
%_Coke oven gas consists mainly of_% |
| A. | H‚ÇÇ, & CH‚ÇÑ |
| B. | CO, & CO‚ÇÇ |
| C. | H‚ÇÇ, & CO |
| D. | CH‚ÇÑ, & CO |
| Answer» B. CO, & CO‚Äö√á√á | |
| 233. |
%_Pick out the wrong statement pertaining to the properties of glasses. Glasses generally have_% |
| A. | High electrical insulation properties |
| B. | Sharp melting points |
| C. | Low co-efficient of thermal expansion |
| D. | Compressive strength much greater than their tensile strengths |
| Answer» C. Low co-efficient of thermal expansion | |
| 234. |
%_Lindane is_% |
| A. | Not a fumigant |
| B. | BHC (Benzene Hexa Chloride) containing 99% γ-isomer |
| C. | A by-product of BHC manufacture |
| D. | Both B and C |
| Answer» C. A by-product of BHC manufacture | |
| 235. |
%___________ is produced using polycondensation reaction._% |
| A. | Polythene |
| B. | Phenol formaldehyde |
| C. | Poly vinyl chloride |
| D. | None of these |
| Answer» C. Poly vinyl chloride | |
| 236. |
_ Ceramics are produced from silicates or clayish materials: Which of the following is not a ceramic material?$? |
| A. | Slag cement |
| B. | Glasses |
| C. | Porcelain/Potteries |
| D. | Teflon |
| Answer» E. | |
| 237. |
_ Dehydrogenation of isopropanol produces$? |
| A. | Propyl alcohol |
| B. | Acetone |
| C. | Trichloroethylene |
| D. | Formaldehyde |
| Answer» C. Trichloroethylene | |
| 238. |
_ Nylon-6 is a$? |
| A. | Polyamide |
| B. | Thermosetting resin |
| C. | Polyester |
| D. | None of these |
| Answer» B. Thermosetting resin | |
| 239. |
_ The basic constituent of vegetable oils is$? |
| A. | Triglyceride |
| B. | Fatty acids |
| C. | Fatty alcohol |
| D. | Mono esters |
| Answer» B. Fatty acids | |
| 240. |
_ Fermentation is adversely affected by the$? |
| A. | Presence of air |
| B. | Absence of air |
| C. | High concentration |
| D. | Presence of ammonium salts |
| Answer» D. Presence of ammonium salts | |
| 241. |
_ Viscose rayon$? |
| A. | Cannot be made from sulphite pulp |
| B. | Utilises H‚ÇÇSO‚ÇÑ, NaOH and CS‚ÇÇ during its manufacture |
| C. | Cannot yield textile grade fibre |
| D. | None of these |
| Answer» C. Cannot yield textile grade fibre | |
| 242. |
_ High acid value of an oil or fat is an indication of$? |
| A. | Storage under improper conditions |
| B. | Absence of unsaturation |
| C. | Its smaller molecular weight |
| D. | None of these |
| Answer» B. Absence of unsaturation | |
| 243. |
_ Superior quality laboratory apparatus is made of the __________ glass having low thermal co-efficient of expansion & high chemical resistance.$? |
| A. | Flint |
| B. | Soda |
| C. | Pyrex |
| D. | Potash |
| Answer» D. Potash | |
| 244. |
_ CO & H‚ÇÇ are the constituents of$? |
| A. | Producer gas |
| B. | Water gas |
| C. | Coke oven gas |
| D. | All of the above |
| Answer» E. | |
| 245. |
_ Coke used for the production of calcium carbide should have$? |
| A. | Low ash content |
| B. | Low ignition temperature |
| C. | High electrical resistivity |
| D. | All of the above |
| Answer» E. | |
| 246. |
_ __________ process is used for the manufacture of sodium carbonate by ammonia soda process.$? |
| A. | Ostwald's |
| B. | Bosch |
| C. | Solvay |
| D. | Haber's |
| Answer» D. Haber's | |
| 247. |
_ Which of the following is a constituent of coffee?$? |
| A. | Caffeine |
| B. | Nicotine |
| C. | Calgon |
| D. | Lignin |
| Answer» B. Nicotine | |
| 248. |
_ Starting raw material for the manufacture of alum is$? |
| A. | Alumina |
| B. | Gypsum |
| C. | Bauxite |
| D. | Ammonium bicarbonate |
| Answer» D. Ammonium bicarbonate | |
| 249. |
_ Fats as compared to oils have$? |
| A. | More unsaturated glycerides of fatty acids |
| B. | Less unsaturated glycerides of fatty acids |
| C. | Much higher reactivity to oxygen |
| D. | Lower melting point |
| Answer» C. Much higher reactivity to oxygen | |
| 250. |
_ Which of the following may be viewed as a catalyst in the manufacture of soda ash by Solvay process?$? |
| A. | NH? |
| B. | NaCl |
| C. | CaO |
| D. | Coke |
| Answer» B. NaCl | |