MCQOPTIONS
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MCQOPTIONS
This section includes 1331 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. |
Nicotine is___________________? |
| A. | A volatile alkaloid |
| B. | Obtained by treating by-products of the tobacco processing industry |
| C. | Both A. and B. |
| D. | Neither A. nor B. |
| Answer» D. Neither A. nor B. | |
| 252. |
Nickel is not used as a catalyst in the____________________? |
| A. | Fischer-Tropsch process |
| B. | Shift conversion |
| C. | Hydrogenation of oil |
| D. | Ostwald’s process of HNO3 manufacture |
| Answer» E. | |
| 253. |
Nickel is not used as a catalyst in the __________________ reaction ? |
| A. | Shift conversion |
| B. | Oil hydrogenation |
| C. | Steaming reforming of naphtha |
| D. | Ammonia cracking/dissociation |
| Answer» B. Oil hydrogenation | |
| 254. |
Neoprene is the trade name of___________________? |
| A. | Polyurethane |
| B. | Phenol formaldehyde |
| C. | Polychlorophrene |
| D. | Styrene-butadiene rubber |
| Answer» D. Styrene-butadiene rubber | |
| 255. |
Neoprene is chemically known as___________________? |
| A. | Polybutadiene |
| B. | Styrene butadiene rubber (SBR) |
| C. | Polyurethane |
| D. | Polychlorophrene |
| Answer» E. | |
| 256. |
Neoprene is a__________________? |
| A. | Monomer |
| B. | Synthetic rubber |
| C. | Polyester |
| D. | None of these |
| Answer» C. Polyester | |
| 257. |
______________ Nature of hypo (sodium thiosulphate) makes it useful in photography ? |
| A. | Oxidising |
| B. | Reducing |
| C. | Complex forming |
| D. | Photochemical |
| Answer» D. Photochemical | |
| 258. |
Naphthols are derivatives of________________? |
| A. | Methyl amine |
| B. | Naphthalene |
| C. | Phenol |
| D. | Xylene |
| Answer» C. Phenol | |
| 259. |
Naphthalene is removed from coke oven gas by ________________________? |
| A. | Adsorbing on palladium |
| B. | Absorbing in ethanolamine |
| C. | Scrubbing with wash oil |
| D. | Passing it through electrostatic precipitator |
| Answer» D. Passing it through electrostatic precipitator | |
| 260. |
Na2CO3 is called _________________? |
| A. | Washing soda |
| B. | Soda ash |
| C. | Plaster of Paris |
| D. | Calcite |
| Answer» C. Plaster of Paris | |
| 261. |
Multistage catalytic converter is not used in the___________________? |
| A. | Conversion of SO2 to SO3 |
| B. | NH3 synthesis reaction |
| C. | Both A. and B. |
| D. | Neither A. nor B. |
| Answer» C. Both A. and B. | |
| 262. |
Most widely and commonly used coagulant for the removal of suspended impurities in water is __________________? |
| A. | Bleaching powder |
| B. | Slaked lime |
| C. | Alum |
| D. | Copper sulphate |
| Answer» D. Copper sulphate | |
| 263. |
Most easily and cheaply available fibrous raw material for paper manufacture available in India is bamboo. The yield of pulp produced from fibrous raw material by mechanical process is about _____________ percent? |
| A. | 75 |
| B. | < 10 |
| C. | > 30 |
| D. | 50 |
| Answer» C. > 30 | |
| 264. |
Most commonly used rubber vulcanising agent is___________________? |
| A. | Sulphur |
| B. | Bromine |
| C. | Platinum |
| D. | Alumina |
| Answer» B. Bromine | |
| 265. |
More than 100 percent of _________________ is present in oleum? |
| A. | SO3 |
| B. | H2SO4 |
| C. | H2SO3 |
| D. | SO2 |
| Answer» C. H2SO3 | |
| 266. |
Molecular weights of polymers are in the range of__________________ ? |
| A. | 102 – 102 |
| B. | 105 – 109 |
| C. | 102 – 107 |
| D. | 109 – 1011 |
| Answer» D. 109 – 1011 | |
| 267. |
Molecular weight of plastics ranges from ______________________? |
| A. | 5000 to 10000 |
| B. | 20000 to 250000 |
| C. | 500 to 5000 |
| D. | 106 to 109 |
| Answer» C. 500 to 5000 | |
| 268. |
Molasses is the starting material for the production of ___________________ ? |
| A. | Alcohol |
| B. | Essential oil |
| C. | Fatty acids |
| D. | Massecuite |
| Answer» B. Essential oil | |
| 269. |
Mineral oils (e.g. petroleum oils) are preferred over fatty oils (e.g. mustard oil, ghee, tallow, palm oil, olive oil etc.) as a lubricant due to its________________? |
| A. | Poor oxidation stability and high gum forming tendency |
| B. | Greater tendency of decomposition at elevated temperature |
| C. | Hydrolysis tendency in presence of water |
| D. | All A, B. and C |
| Answer» E. | |
| 270. |
Metallic soap is ________________ salt of fatty acids ? |
| A. | Sodium |
| B. | Potassium |
| C. | Both sodium & potassium |
| D. | Aluminium or calcium |
| Answer» E. | |
| 271. |
Metallic soap (e.g. aluminium or calcium salts of fatty acids) can be used_______________________? |
| A. | As a lubricant |
| B. | As a rust preventive |
| C. | In hard water for cleaning of cloth |
| D. | As a foam depressant in distillation column |
| Answer» B. As a rust preventive | |
| 272. |
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 | |
| 273. |
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. | |
| 274. |
Massecuite is ___________________? |
| A. | Used for paper making |
| B. | Used as a cattle feed |
| C. | Highly acidic in nature |
| D. | None of these |
| Answer» E. | |
| 275. |
Massecuite is a terminology used in the ______________ industry ? |
| A. | Paint |
| B. | Oil hydrogenation |
| C. | Soap |
| D. | Sugar |
| Answer» E. | |
| 276. |
Margarine is a/an____________________? |
| A. | Fat |
| B. | Explosive |
| C. | Plasticiser |
| D. | Rocket propellant |
| Answer» B. Explosive | |
| 277. |
Manufacture of phthalic anhydride uses ______________ as a catalyst ? |
| A. | Ni |
| B. | Cr |
| C. | V2O5 |
| D. | Al2O3 |
| Answer» D. Al2O3 | |
| 278. |
Mannheim furnace is used in the manufacture of_________________? |
| A. | Hydrochloric acid |
| B. | H2SO4 by Chamber process |
| C. | Calcium carbide |
| D. | Corundum |
| Answer» B. H2SO4 by Chamber process | |
| 279. |
Maleic anhydride is produced by catalytic oxidation of____________________? |
| A. | Toluene |
| B. | Ethyl alcohol |
| C. | Naphthalene |
| D. | Benzene |
| Answer» E. | |
| 280. |
Major component of flint glass is_____________________? |
| A. | Lead oxide |
| B. | Silica |
| C. | Alumina |
| D. | Soda |
| Answer» B. Silica | |
| 281. |
Main use of hydrazine is___________________? |
| A. | As a rocket fuel |
| B. | In water treatment |
| C. | As a disinfectant |
| D. | As fire retardant |
| Answer» B. In water treatment | |
| 282. |
Main product in calcium carbide-water reaction is___________________? |
| A. | Ca(OH)2 |
| B. | C2H2 |
| C. | CO2 |
| D. | CaCO3 |
| Answer» C. CO2 | |
| 283. |
Main constituents of Portland cement are calcium aluminate and__________________? |
| A. | Gypsum |
| B. | Silicates |
| C. | Sodium silicate |
| D. | Carbonates |
| Answer» C. Sodium silicate | |
| 284. |
Main constituents of natural rubber is____________________? |
| A. | Polystyrene |
| B. | Polyisoprene |
| C. | Polybutadiene |
| D. | Polychlorophrene |
| Answer» C. Polybutadiene | |
| 285. |
Main constituents of cotton fiber is__________________? |
| A. | Lignin |
| B. | Cellulose |
| C. | Starch |
| D. | Gelatine |
| Answer» C. Starch | |
| 286. |
Main constituent of limestone is____________________? |
| A. | CaCO3 |
| B. | MgCO3 |
| C. | Na2CO3 |
| D. | CaSO4 |
| Answer» B. MgCO3 | |
| 287. |
Main constituent of dolomite is __________________? |
| A. | CaCO3 |
| B. | MgCO3 |
| C. | K2CO3 |
| D. | Na2CO3 |
| Answer» C. K2CO3 | |
| 288. |
Magnesium and calcium ______________ cause temporary hardness of water ? |
| A. | Carbonates |
| B. | Bicarbonates |
| C. | Phosphates |
| D. | Sulphates |
| Answer» C. Phosphates | |
| 289. |
Lurgi coal gasifier is a pressurised _______________ bed reactor ? |
| A. | Moving |
| B. | Fixed |
| C. | Fluidised |
| D. | Entrained |
| Answer» B. Fixed | |
| 290. |
Lubricating greases are a mixture of__________________? |
| A. | Mineral oil, soap and additives |
| B. | Mineral oil and metallic soap |
| C. | Mineral oil and fatty oil |
| D. | Fatty oil and metallic soap |
| Answer» B. Mineral oil and metallic soap | |
| 291. |
Low temperature carbonisation of coal takes place at _______________ °C ? |
| A. | 300 |
| B. | 1100 |
| C. | 700 |
| D. | 900 |
| Answer» D. 900 | |
| 292. |
Low purity oxygen is used for____________________? |
| A. | L.D. steel making |
| B. | Cutting and welding of metals |
| C. | Medicinal purposes |
| D. | Chemical oxidation processes |
| Answer» E. | |
| 293. |
Lithophane is ___________________? |
| A. | Explosive |
| B. | White lead |
| C. | Filter aid |
| D. | ZnS (white pigment) |
| Answer» E. | |
| 294. |
Litharge is________________? |
| A. | Lead oxide |
| B. | Zinc oxide |
| C. | Zinc sulphide |
| D. | Cellulosic photographic material |
| Answer» B. Zinc oxide | |
| 295. |
Liquor poisoning generally occurs due to the presence of _________________ in it ? |
| A. | Ethyl alcohol |
| B. | Impurities |
| C. | Methyl alcohol |
| D. | Carbonic acid |
| Answer» D. Carbonic acid | |
| 296. |
Liquefaction of gases cannot be done by___________________? |
| A. | Exchange of heat with colder stream |
| B. | Adiabatic expansion through a throttle valve (Joule-Thomson expansion) |
| C. | Merely compressing it beyond critical pressure |
| D. | Adiabatic expansion against a piston or in a turbine |
| Answer» D. Adiabatic expansion against a piston or in a turbine | |
| 297. |
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 | |
| 298. |
Lindane is____________________? |
| A. | Not a fumigant |
| B. | BHC (Benzene Hexachloride) containing 99% γ-isomer |
| C. | A by-product of BHC manufacture |
| D. | Both B. and C. |
| Answer» C. A by-product of BHC manufacture | |
| 299. |
Lime and soda ash are added to water to remove ___________________? |
| A. | Bicarbonates & sulphates of calcium and magnesium |
| B. | Undesirable taste and odour |
| C. | Bacteria |
| D. | Its corrosiveness |
| Answer» B. Undesirable taste and odour | |
| 300. |
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 | |