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.
| 251. |
_ Chalcopyrite is the main ore of$? |
| A. | Copper |
| B. | Lead |
| C. | Tin |
| D. | Iron |
| Answer» B. Lead | |
| 252. |
_ Gun powder uses$? |
| A. | Sulphur |
| B. | Charcoal |
| C. | Potassium nitrate |
| D. | All of the above |
| Answer» E. | |
| 253. |
_ Glass is$? |
| A. | Mainly CaO |
| B. | Subjected to galvanising |
| C. | A super cooled liquid |
| D. | All of the above |
| Answer» D. All of the above | |
| 254. |
_ Thermal pyrolysis of ethylene dichloride produces$? |
| A. | Trichloroethylene |
| B. | Vinyl chloride |
| C. | Ethanol amine |
| D. | Ethylene oxide |
| Answer» C. Ethanol amine | |
| 255. |
_ Yellow phosphorus is transported under$? |
| A. | Air |
| B. | Water |
| C. | Nitrogen |
| D. | Helium |
| Answer» C. Nitrogen | |
| 256. |
_ Ethyl alcohol cannot be produced$? |
| A. | From waste sulphite substrate of paper mills |
| B. | By esterification and hydroloysis of ethylene |
| C. | From molasses |
| D. | None of these |
| Answer» E. | |
| 257. |
_ At very high concentration of enzymes, the rate of fermentation chemical reaction is __________ the concentration of reactants.$? |
| A. | Independent of |
| B. | Directly proportional to |
| C. | Inversely proportional to |
| D. | Proportional to the square of |
| Answer» B. Directly proportional to | |
| 258. |
_ Which of the following impurities in feed water for high pressure boiler is the most detrimental?$? |
| A. | Silica |
| B. | Dissolved oxygen |
| C. | Suspended salt |
| D. | Dissolved salt |
| Answer» B. Dissolved oxygen | |
| 259. |
_ Conversion of CO to CO‚ÇÇ by steam in presence of a catalyst is called$? |
| A. | Steam reforming |
| B. | Shift conversion |
| C. | Steam gasification |
| D. | None of these |
| Answer» C. Steam gasification | |
| 260. |
_ Pick out the wrong statement pertaining to nitric acid.$? |
| A. | About 90% of nitric acid is manufactured by Ostwald |
| B. | It is a strong mono basic acid which reacts with almost all the metals except noble metals |
| C. | Yellow color of impure nitric acid is because of dissolved oxides of nitrogen (mainly NO‚ÇÇ) |
| D. | Arc process of nitric acid manufacture is economical as compared to Ostwald |
| Answer» E. | |
| 261. |
_ Anion exchanger is regenerated usually with$? |
| A. | NaOH |
| B. | H‚ÇÇSO‚ÇÑ |
| C. | Hydrazine |
| D. | Alum solution |
| Answer» B. H‚Äö√á√áSO‚Äö√á√ë | |
| 262. |
_ Oils and fats are converted to soap in a process called$? |
| A. | Hydrogenation |
| B. | Esterification |
| C. | Saponification |
| D. | None of these |
| Answer» D. None of these | |
| 263. |
_ Enamels$? |
| A. | Give good glossy finish |
| B. | Are same as varnish |
| C. | Are prepared from non-drying oil |
| D. | Do not contain pigment |
| Answer» B. Are same as varnish | |
| 264. |
_ Prussian blue is chemically represented by$? |
| A. | FeO.TiO‚ÇÇ |
| B. | Ca SO‚ÇÑ . 2H‚ÇÇO |
| C. | Fe‚ÇÑ [Fe (CN‚ÇÜ)‚ÇÉ] |
| D. | AlF‚ÇÉ . 3NaF |
| Answer» D. AlF‚Äö√á√â . 3NaF | |
| 265. |
_ Mercury cells for caustic soda manufacture, compared to diaphragm cells$? |
| A. | Require lower initial investment |
| B. | Require more power |
| C. | Produce lower concentration NaOH |
| D. | None of these |
| Answer» E. | |
| 266. |
_ The drug used in contraceptives is$? |
| A. | Sulphadizene |
| B. | Mestranol |
| C. | Methyl salicylate |
| D. | Pencillin |
| Answer» C. Methyl salicylate | |
| 267. |
_ Separation of fresh water from sea water can be done by the __________ operation.$? |
| A. | Osmosis |
| B. | Reverse osmosis |
| C. | Absorption |
| D. | Adsorption |
| Answer» C. Absorption | |
| 268. |
_ Diaphragm electrolytic cell as compared to mercury electrolytic cell$? |
| A. | Produces 70% NaOH solution |
| B. | Requires less specific power consumption for the production of chlorine |
| C. | Requires lesser investment for similar capacity |
| D. | All of the above |
| Answer» D. All of the above | |
| 269. |
_ DDT stands for$? |
| A. | Diethyl-diphenyl-trichloromethane |
| B. | Dichloro-diphenyl-trichloromethane |
| C. | Diphenyl-dichloro-trichloromethane |
| D. | Dichloro-diphenyl-trichloroethane |
| Answer» E. | |
| 270. |
_ Good quality of edible salt is obtained from brine by the process of$? |
| A. | Solar evaporation |
| B. | Vacuum evaporation |
| C. | Freeze drying |
| D. | Electrolysis |
| Answer» C. Freeze drying | |
| 271. |
_ Sulphuric acid is mainly used in the __________ industry.$? |
| A. | Fertiliser |
| B. | Steel |
| C. | Paper |
| D. | Paint |
| Answer» B. Steel | |
| 272. |
_ Lindane is$? |
| 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 | |
| 273. |
_ Which of the following is not an insecticide?$? |
| A. | Hydrocyanic acid |
| B. | Nicotine |
| C. | Sodium flouride |
| D. | Hexane |
| Answer» E. | |
| 274. |
_ Which of the following sugars is the sweetest?$? |
| A. | Glucose |
| B. | Fructose |
| C. | Sucrose |
| D. | Lactose |
| Answer» C. Sucrose | |
| 275. |
_ In the manufacture of sulphuric acid from elemental sulphur, the following sequence of major operations is followed :$? |
| A. | Furnace ‚Üí converter ‚Üí absorber |
| B. | Furnace ‚Üí evaporator ‚Üí absorber |
| C. | Furnace ‚Üí converter ‚Üí evaporator |
| D. | Converter ‚Üí furnace ‚Üí absorber |
| Answer» B. Furnace ‚Äö√ú√≠ evaporator ‚Äö√ú√≠ absorber | |
| 276. |
_ Molasses is the starting material for the production of$? |
| A. | Alcohol |
| B. | Essential oil |
| C. | Fatty acids |
| D. | Massecuite |
| Answer» B. Essential oil | |
| 277. |
_ Aryl benzene sulphonate (ABS) is a$? |
| A. | Detergent |
| B. | Plasticiser for unsaturated polyester |
| C. | Starting material for the synthesis of glycerine |
| D. | Coating ingredient for photographic film |
| Answer» B. Plasticiser for unsaturated polyester | |
| 278. |
_ In the manufacture of H‚ÇÇSO‚ÇÑ, vanadium catalyst as compared to platinum catalyst$? |
| A. | Gives higher conversion efficiency |
| B. | Has a longer life and is not poisoned by arsenic |
| C. | Handles lower SO‚ÇÇ content gas (7 -10% SO‚ÇÇ), thus increasing the capital cost of the plant |
| D. | All of the above |
| Answer» E. | |
| 279. |
_ Which of the following is an ore of iron?$? |
| A. | Galena |
| B. | Chalcopyrite |
| C. | Hematite |
| D. | Bauxite |
| Answer» D. Bauxite | |
| 280. |
_ __________ glass has the lowest co-efficient of thermal expansion and hence is more heat resistant.$? |
| A. | Pyrex |
| B. | Soda lime |
| C. | Lead |
| D. | High silica |
| Answer» B. Soda lime | |
| 281. |
_ __________ acid is an unsaturated fatty acid.$? |
| A. | Palmitic |
| B. | Oleic |
| C. | Stearic |
| D. | Oxalic |
| Answer» C. Stearic | |
| 282. |
_ Hydrocynic acid (HCN) is used as an insecticide for$? |
| A. | Controlling timber degradation by ants |
| B. | Controlling poultry lice |
| C. | Potato beetle |
| D. | Citrus fruits |
| Answer» E. | |
| 283. |
_ Fish contains about __________ percent oil.$? |
| A. | 5 |
| B. | 10 |
| C. | 20 |
| D. | 35 |
| Answer» D. 35 | |
| 284. |
_ Electric bulbs are made of __________ glass.$? |
| A. | Jena |
| B. | Flint |
| C. | Crookes |
| D. | Pyrex |
| Answer» C. Crookes | |
| 285. |
_ Zeolite is a/an$? |
| A. | Naturally occuring clay which is capable of exchanging cations |
| B. | Abrasive material |
| C. | Catalyst used in shift conversion |
| D. | None of these |
| Answer» B. Abrasive material | |
| 286. |
_ Thermosetting materials$? |
| A. | Are cross-linked molecules |
| B. | Soften on application of heat |
| C. | Are solvent soluble |
| D. | None of these |
| Answer» B. Soften on application of heat | |
| 287. |
_ Which of the following is not a product of coal tar distillation?$? |
| A. | Anthracene |
| B. | Cresote oil |
| C. | Carbolic oil |
| D. | None of these |
| Answer» E. | |
| 288. |
_ The enzyme which converts starch into the disacharides maltose is$? |
| A. | Diastase |
| B. | Maltase |
| C. | Yeast |
| D. | None of these |
| Answer» B. Maltase | |
| 289. |
_ Which of the following fuel gases contains maximum amount of carbon monoxide?$? |
| A. | Coke oven gas |
| B. | Water gas |
| C. | Blast furnace gas |
| D. | L.D. converter gas |
| Answer» E. | |
| 290. |
_ The end bleaching agent used to move last traces of colour bodies from the pulp is$? |
| A. | Chlorine dioxide (ClO‚ÇÇ) |
| B. | MgO |
| C. | SO‚ÇÇ gas |
| D. | Mercaptans |
| Answer» B. MgO | |
| 291. |
_ Which of the following is used as a coagulant in water treatment?$? |
| A. | Chloramine |
| B. | Chlorine |
| C. | Ferrous sulphate |
| D. | Hydrogen peroxide |
| Answer» D. Hydrogen peroxide | |
| 292. |
_ Chemical name of 'alum' is$? |
| A. | Barium sulphate |
| B. | Aluminium sulphate |
| C. | Aluminium chloride |
| D. | Calcium sulphate |
| Answer» C. Aluminium chloride | |
| 293. |
_ The difference between saponification value and acid value is$? |
| A. | Called ester value |
| B. | Always negative |
| C. | Constant for all fatty oils |
| D. | None of these |
| Answer» B. Always negative | |
| 294. |
_ CaO is called$? |
| A. | Quick lime |
| B. | Slaked lime |
| C. | Limestone |
| D. | Calcite |
| Answer» B. Slaked lime | |
| 295. |
_ Mercury electrolytic cell produces 50-70% NaOH solution. Its operating temperature is __________ °C.$? |
| A. | 25 |
| B. | 60-70 |
| C. | 150-200 |
| D. | 250-300 |
| Answer» C. 150-200 | |
| 296. |
_ Bakelite is chemically known as$? |
| A. | Polyvinyl chloride (PVC) |
| B. | Polybutadiene |
| C. | Phenol formaldehyde |
| D. | Polyurathane |
| Answer» D. Polyurathane | |
| 297. |
_ Favourable conditions for the liquefaction of gases in general are$? |
| A. | High pressure & low temperature |
| B. | Low pressure & high temperature |
| C. | High pressure & high temperature |
| D. | Low pressure & low temperature |
| Answer» B. Low pressure & high temperature | |
| 298. |
_ Baking soda is chemically represented by$? |
| A. | Na‚ÇÇCO‚ÇÉ |
| B. | NaHCO‚ÇÉ |
| C. | Na‚ÇÇCO‚ÇÉ.H‚ÇÇO |
| D. | Na‚ÇÇCO‚ÇÉ.10H‚ÇÇO |
| Answer» C. Na‚Äö√á√áCO‚Äö√á√â.H‚Äö√á√áO | |
| 299. |
_ 20% oleum means that in 100 kg oleum, there are 20 kg of$? |
| A. | SO‚ÇÉ and 80kg of H‚ÇÇSO‚ÇÑ |
| B. | H‚ÇÇSO‚ÇÑ and 80kg of SO‚ÇÉ |
| C. | SO‚ÇÉ for each 100 kg of H‚ÇÇSO‚ÇÑ |
| D. | None of these |
| Answer» B. H‚Äö√á√áSO‚Äö√á√ë and 80kg of SO‚Äö√á√â | |
| 300. |
_ Fire clay is __________ refractory material.$? |
| A. | A basic |
| B. | An acidic |
| C. | A neutral |
| D. | Not a |
| Answer» C. A neutral | |