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.
| 101. |
*/*_Exothermic neutralisation reaction between caustic soda and dodecylbenzene sulphonic acid produces sodium dodecylbenzene sulphate, which is a/an? |
| A. | Explosive |
| B. | Soap |
| C. | Detergent |
| D. | Analgesic drug |
| Answer» D. Analgesic drug | |
| 102. |
*/*_Cation exchanger is regenerated usually with? |
| A. | NaOH |
| B. | H‚ÇÇSO‚ÇÑ |
| C. | Hydrazine |
| D. | Alum solution |
| Answer» C. Hydrazine | |
| 103. |
*/*_Sea weeds are an important source of? |
| A. | Fluorine |
| B. | Chlorine |
| C. | Bromine |
| D. | Iodine |
| Answer» E. | |
| 104. |
*/*_The most widely used coagulant for removing suspended impurities from water is? |
| A. | Bleaching powder |
| B. | Chlorine |
| C. | Calcium sulphate |
| D. | Alum |
| Answer» E. | |
| 105. |
*/*_Flash point of most vegetable oils is about __________ °C.? |
| A. | 50 |
| B. | 100 |
| C. | 200 |
| D. | 300 |
| Answer» D. 300 | |
| 106. |
*/*_Trinitrotoluene (TNT), an explosive, is made by the nitration of? |
| A. | Nitrobenzene |
| B. | Toluene |
| C. | Nitrotoluene |
| D. | Benzene |
| Answer» C. Nitrotoluene | |
| 107. |
*/*_Nitrile rubber is produced by the polymerisation of? |
| A. | Acrylonitrile and butadiene |
| B. | Acrylonitrile and styrene |
| C. | Isobutylene and isoprene |
| D. | None of these |
| Answer» B. Acrylonitrile and styrene | |
| 108. |
*/*_Bisphenol A is produced by the condensation of acetone with? |
| A. | Formaldehyde |
| B. | Ethyl alcohol |
| C. | Diethyl ether |
| D. | Phenol |
| Answer» E. | |
| 109. |
*/*_Nylon-6 as compared to Nylon-66 is having higher? |
| A. | Hardness |
| B. | Abrasion/resistance |
| C. | Melting point |
| D. | None of these |
| Answer» E. | |
| 110. |
*/*_Economics of 'Solvay Process' depends upon the efficiency of? |
| A. | Carbonating tower |
| B. | Ammonia recovery |
| C. | Ammonia recovery and size of the plant |
| D. | Ammoniation of salt solution |
| Answer» D. Ammoniation of salt solution | |
| 111. |
*/*_Carboxymethyl cellulose (CMC) is added in detergents to act as a/an? |
| A. | Surfactant |
| B. | Builder |
| C. | Optical brightening agent |
| D. | Anti soil redeposition agent |
| Answer» E. | |
| 112. |
*/*_Massacuits is a terminology used in the __________ industry.? |
| A. | Paint |
| B. | Oil hydrogenation |
| C. | Soap |
| D. | Sugar |
| Answer» E. | |
| 113. |
*/*_Litharge is? |
| A. | Lead oxide |
| B. | Zinc oxide |
| C. | Zinc sulphide |
| D. | Cellulosic photographic material |
| Answer» B. Zinc oxide | |
| 114. |
*/*_Nylon 66 is so named because the? |
| A. | Average degree of polymerisation of the polymer is 1966 |
| B. | Number of carbon atoms between two nitrogen atoms are 6 |
| C. | Number of nitrogen atoms between two carbon atoms are 6 |
| D. | Polymer was first synthesised in 1966 |
| Answer» B. Number of carbon atoms between two nitrogen atoms are 6 | |
| 115. |
*/*_Concentration of sulphide ores is done usually by? |
| A. | Roasting |
| B. | Smelting |
| C. | Froth floatation |
| D. | Electro magnetic separation |
| Answer» D. Electro magnetic separation | |
| 116. |
*/*_Which of the following is not a raw material used for the manufacture of ordinary glass?? |
| A. | Iron oxide |
| B. | Soda ash |
| C. | Limestone |
| D. | Silica |
| Answer» B. Soda ash | |
| 117. |
*/*_Flexible foam (for mattresses) is usually made of? |
| A. | PVC |
| B. | Silicone |
| C. | Polyurethanes |
| D. | Polyamides |
| Answer» D. Polyamides | |
| 118. |
*/*_Which of the following is a bleaching agent added in the detergents to facilitate removal of stains caused due to blood, tea etc?? |
| A. | Sodium silicate |
| B. | Sodium borate |
| C. | Sodium tripolyphosphate (STPP) |
| D. | Caustic soda |
| Answer» C. Sodium tripolyphosphate (STPP) | |
| 119. |
*/*_Which of the following contains least amount of N‚ÇÇ?? |
| A. | Coke oven gas |
| B. | Blast furnace gas |
| C. | Producer gas |
| D. | Water gas (blue gas) |
| Answer» B. Blast furnace gas | |
| 120. |
*/*_Dichloro diphenyl __________ is the full form of DDT (an insecticide).? |
| A. | Tetrachloroethane |
| B. | Trichloroethane |
| C. | Tetrachloromethane |
| D. | Trichloromethane |
| Answer» C. Tetrachloromethane | |
| 121. |
*/*_Rotary kiln is not involved in the production of? |
| A. | Cement |
| B. | Lime from limestone |
| C. | Slaked lime from quick lime |
| D. | None of these |
| Answer» D. None of these | |
| 122. |
*/*_Carbon content of pitch (residue of coal tar distillation) is around __________ percent.? |
| A. | 70 |
| B. | 55 |
| C. | 80 |
| D. | 94 |
| Answer» E. | |
| 123. |
*/*_Sodium bisulphite is used for __________ water.? |
| A. | Deaeration |
| B. | Dechlorination |
| C. | Both A & B |
| D. | Neither A nor B |
| Answer» D. Neither A nor B | |
| 124. |
*/*_Phenolic antiseptics are added in the __________ soap.? |
| A. | Shaving |
| B. | Medicated |
| C. | Metallic |
| D. | Transparent |
| Answer» C. Metallic | |
| 125. |
*/*___________ is produced using molasses as the starting raw material.? |
| A. | Methyl alcohol |
| B. | Ethyl alcohol |
| C. | Benzol |
| D. | Dimethyl ether |
| Answer» C. Benzol | |
| 126. |
*/*_Synthetic glycerine is produced from? |
| A. | Toluene |
| B. | Phenol |
| C. | Propylene |
| D. | Naphthalene |
| Answer» D. Naphthalene | |
| 127. |
*/*_Thorium is mainly used? |
| A. | For the manufacture of gas mantles |
| B. | As a fissile fuel in a nuclear reactor |
| C. | In the manufacture of hydrogen bomb |
| D. | In the treatment of cancer |
| Answer» B. As a fissile fuel in a nuclear reactor | |
| 128. |
*/*_Mercury electrolytic cells are preferred over diaphragm electrolytic cell (for production of caustic soda), as it? |
| A. | Has larger production capacity per unit cell |
| B. | Consumes less power per ton of Cl‚ÇÇ produced |
| C. | Produces high purity (70%) caustic soda directly |
| D. | All of the above |
| Answer» E. | |
| 129. |
*/*_Trinitro-toluene (TNT) is? |
| A. | Used in glycerine manufacture |
| B. | An explosive |
| C. | Used in dye manufacture |
| D. | None of these |
| Answer» C. Used in dye manufacture | |
| 130. |
*/*_Potassium is kept & transported under? |
| A. | Water |
| B. | Liquid ammonia |
| C. | Kerosene oil |
| D. | Alcohol |
| Answer» D. Alcohol | |
| 131. |
*/*_Styrene-butadiene-rubber (SBR) as compared to natural rubber has? |
| A. | Poorer tensile strength |
| B. | Poorer resistance to oxidation |
| C. | Greater amount of heat build-up under heavy loading |
| D. | All of the above |
| Answer» E. | |
| 132. |
*/*_Coal tar is used as a? |
| A. | Binding material for coal briquettes |
| B. | Fuel in rotary kiln |
| C. | Binder in making carbon electrodes |
| D. | All of the above |
| Answer» E. | |
| 133. |
*/*_Chemical name of soda ash is? |
| A. | Sodium bicarbonate |
| B. | Sodium thiosulphate |
| C. | Potassium carbonate |
| D. | None of these |
| Answer» E. | |
| 134. |
*/*_Hydrogenation of oil takes place in a/an __________ reactor.? |
| A. | Autothermal |
| B. | Trickle bed |
| C. | Plug flow |
| D. | None of these |
| Answer» C. Plug flow | |
| 135. |
*/*_High temperature carbonisation of coal produces? |
| A. | Inferior coke compared to low temperature carbonisation |
| B. | Less of gases compared to liquid products |
| C. | Larger quantity of tar compared to low temperature carbonisation |
| D. | None of these |
| Answer» E. | |
| 136. |
*/*_Comparing sulphate process with sulphite process, we find that __________ in the later.? |
| A. | Both temperature & pressure in the former is less than that |
| B. | Both temperature & pressure in the former is more than that |
| C. | Temperature is more in the former whereas pressure is more |
| D. | Pressure is more in the former whereas temperature is less |
| Answer» C. Temperature is more in the former whereas pressure is more | |
| 137. |
*/*___________ nature of hypo (sodium thiosulphate) makes it useful in photography.? |
| A. | Oxidising |
| B. | Reducing |
| C. | Complex forming |
| D. | Photochemical |
| Answer» D. Photochemical | |
| 138. |
*/*_Polycaprolactum is commercially known as? |
| A. | Nylon-6 |
| B. | Nylon-66 |
| C. | Dacron |
| D. | Rayon |
| Answer» B. Nylon-66 | |
| 139. |
*/*_Washing soda is chemically represented by? |
| A. | Na‚ÇÇCO‚ÇÉ |
| B. | Na‚ÇÇCO‚ÇÉ.H‚ÇÇO |
| C. | Na‚ÇÇCO‚ÇÉ.10H‚ÇÇO |
| D. | NaHCO‚ÇÉ |
| Answer» D. NaHCO‚Äö√á√â | |
| 140. |
*/*_10% oleum comprises of 10% free? |
| A. | SO‚ÇÇ |
| B. | H‚ÇÇSO‚ÇÉ |
| C. | SO‚ÇÉ |
| D. | H‚ÇÇSO‚ÇÑ |
| Answer» D. H‚Äö√á√áSO‚Äö√á√ë | |
| 141. |
*/*_The purpose of adding Na‚ÇÇCO‚ÇÉ to water of low alkalinity is to? |
| A. | Permit the use of alum as a coagulant |
| B. | Increase the softening capacity of zeolite |
| C. | Facilitate easy regeneration of zeolite |
| D. | All of the above |
| Answer» B. Increase the softening capacity of zeolite | |
| 142. |
*/*_Deaeration of water in its treatment is necessary, as it? |
| A. | Minimises its turbidity |
| B. | Helps in controlling its taste and odour |
| C. | Minimises its corrosiveness |
| D. | None of these |
| Answer» D. None of these | |
| 143. |
*/*_Dense soda ash used in the manufacture of glass, is chemically represented by? |
| A. | Na‚ÇÇCO‚ÇÉ |
| B. | Na‚ÇÇCO‚ÇÉ.10H‚ÇÇO |
| C. | Na‚ÇÇCO‚ÇÉ.H‚ÇÇO |
| D. | Na‚ÇÇHCO‚ÇÉ |
| Answer» D. Na‚Äö√á√áHCO‚Äö√á√â | |
| 144. |
*/*_Solvay process as compared to dual process (i.e. modified Solvay process)? |
| A. | Can use low grade brine |
| B. | Has less corrosion problems |
| C. | Involves higher investment in NH‚ÇÉ recovery units than that for crystallisation units for NH‚ÇÑCl |
| D. | Both B and C |
| Answer» E. | |
| 145. |
*/*_Co-efficient of thermal expansion of glass is decreased by the addition of __________ during its manufacture.? |
| A. | CaO |
| B. | MnO‚ÇÇ |
| C. | ZnO |
| D. | FeS |
| Answer» D. FeS | |
| 146. |
*/*_Consider the production of ammonia from methene and air as raw materials. The catalyst used are: (i) __________ for steam reforming of methane and (ii) __________ for ammonia synthesis.? |
| A. | (i) - Ni/Al2O‚ÇÉ; (ii) - Cu - ZnO/Al2O‚ÇÉ |
| B. | (i) - Fe/Al2O‚ÇÉ; (ii) - Cu - ZnO/Al2O‚ÇÉ |
| C. | (i) - Ni/Al2O‚ÇÉ; (ii) - Fe/Al2O‚ÇÉ |
| D. | (i) - Fe/Al2O‚ÇÉ; (ii) - Ni/Al2O‚ÇÉ |
| Answer» D. (i) - Fe/Al2O‚Äö√á√â; (ii) - Ni/Al2O‚Äö√á√â | |
| 147. |
*/*_The temperature in the calcium carbide furnace is __________ °C.? |
| A. | 200-300 |
| B. | 700-850 |
| C. | 2000-2200 |
| D. | 4000-4500 |
| Answer» D. 4000-4500 | |
| 148. |
*/*_Rancidity of the fatty oil can be reduced by its? |
| A. | Decoloration |
| B. | Hydrogenation |
| C. | Oxidation |
| D. | Purification |
| Answer» C. Oxidation | |
| 149. |
*/*_Carbon tetrachloride (CCl‚ÇÑ) is the starting raw material for the manufacture of? |
| A. | Trichloroethylene |
| B. | Perchloroethylene |
| C. | Parathion |
| D. | Methanol |
| Answer» C. Parathion | |
| 150. |
*/*_Chemical name of aspirin (an analgesic drug) is? |
| A. | Acetylsalicylic acid |
| B. | Nictonic acid |
| C. | Calcium acetate |
| D. | Methyl salicylate |
| Answer» B. Nictonic acid | |