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.
| 151. |
*/*_Digestion of wood-base materials (for manufacture of pulp) is done to? |
| A. | Remove lignin |
| B. | Produce long fibres |
| C. | Prevent deterioration on storage |
| D. | None of these |
| Answer» B. Produce long fibres | |
| 152. |
*/*_Analgesic drugs are? |
| A. | Pain relievers |
| B. | Antibiotics |
| C. | Used in the treatment of T.B. |
| D. | Used in the treatment of typhiod |
| Answer» B. Antibiotics | |
| 153. |
*/*_Presence of carbonaceous matter in the sewage? |
| A. | Causes reduction in its dissolved oxygen content thereby endangering the life of aquatic creatures |
| B. | Reduces sulphate ions to sulphides causing obnoxious smell |
| C. | Increases the quantity of chlorine used for its purification |
| D. | All of the above |
| Answer» E. | |
| 154. |
*/*_Temperature during hydrogenation of oil should not be more than 200°C, otherwise it will result in? |
| A. | Pyrolysis of oil |
| B. | Sintering of porous catalyst |
| C. | Hydrogen embrittlement |
| D. | All of the above |
| Answer» E. | |
| 155. |
*/*_Which of the following is not responsible for causing permanent hardness of water?? |
| A. | Ca(HCO‚ÇÉ)‚ÇÇ |
| B. | CaCl‚ÇÇ |
| C. | MgCl‚ÇÇ |
| D. | None of these |
| Answer» B. CaCl‚Äö√á√á | |
| 156. |
*/*_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 HNO‚ÇÉ manufacture |
| Answer» E. | |
| 157. |
*/*_Which of the following processes does not produce Cl‚ÇÇ as a co-product during the manufacture of caustic soda?? |
| A. | Diaphragm electrolytic cell process |
| B. | Mercury electrolytic cell process |
| C. | Lime-soda process |
| D. | None of these |
| Answer» D. None of these | |
| 158. |
*/*_Yeast is used in the manufacture of? |
| A. | Pencillin |
| B. | Antibiotics |
| C. | Wine |
| D. | Pasteurised milk |
| Answer» D. Pasteurised milk | |
| 159. |
*/*_Reaction of calcium carbide with water produces a gas, which is used? |
| A. | As an illuminant |
| B. | For metal cutting/welding |
| C. | Both A & B |
| D. | Neither A nor B |
| Answer» D. Neither A nor B | |
| 160. |
*/*_Manufacture of phthalic anhydride uses __________ as a catalyst.? |
| A. | Ni |
| B. | Cr |
| C. | V‚ÇÇO‚ÇÖ |
| D. | Al‚ÇÇO‚ÇÉ |
| Answer» D. Al‚Äö√á√áO‚Äö√á√â | |
| 161. |
*/*_Catalyst used in the hydrogenation of oil is? |
| A. | Nickel |
| B. | Platinum |
| C. | Iron |
| D. | Alumina |
| Answer» B. Platinum | |
| 162. |
*/*_Esterification reaction? |
| A. | Produces soap |
| B. | Is reversible |
| C. | Is a reaction between an alcohol and an organic acid |
| D. | All of the above |
| Answer» E. | |
| 163. |
*/*_Alcohol is produced by the? |
| A. | Oxidation of an aldehyde |
| B. | Hydrolysis of an ether |
| C. | Esterification of a fat |
| D. | None of these |
| Answer» C. Esterification of a fat | |
| 164. |
*/*_Which of the following is used as a binding material in soap to improve soap texture?? |
| A. | Rosin |
| B. | Borax |
| C. | Benzyl acetate |
| D. | Sodium carbonate |
| Answer» C. Benzyl acetate | |
| 165. |
*/*_Process conditions in fermentator used for production of penicillin is? |
| A. | 25°C, 2 atm |
| B. | 50°C, l0 atm |
| C. | 30°C, 200 mm Hg (absolute) |
| D. | 90°C, 45 atm |
| Answer» B. 50¬¨‚àûC, l0 atm | |
| 166. |
*/*_Reverse osmosis is normally used for the? |
| A. | Separation of isotopes of uranium from gaseous uranium hexaflouride |
| B. | Separation of helium from natural gas |
| C. | Desalination of brackish water to produce potable (drinking) water |
| D. | Purification of oxygen |
| Answer» D. Purification of oxygen | |
| 167. |
*/*_Hydrophilic group of a soap or detergent solution is? |
| A. | Water hating |
| B. | Soil loving |
| C. | Water loving |
| D. | None of these |
| Answer» D. None of these | |
| 168. |
*/*_Sugar content in sugarcane on cane basis is about __________ percent by weight.? |
| A. | 1 to 5 |
| B. | 5 to 10 |
| C. | 15 to 20 |
| D. | 20 to 30 |
| Answer» C. 15 to 20 | |
| 169. |
*/*_The catalyst used in shift converter is? |
| A. | Nickel |
| B. | Vanadium |
| C. | Silica gel |
| D. | Alumina |
| Answer» B. Vanadium | |
| 170. |
*/*_Highly porous refractory bricks are? |
| A. | Less susceptible to chemical attack by molten fluxes and gases etc |
| B. | Very strong |
| C. | Having very high thermal conductivity |
| D. | None of these |
| Answer» E. | |
| 171. |
*/*_Wax is a? |
| A. | Mixture of glycerides |
| B. | Mixture of esters of polyhydric alcohols excepting glycerine |
| C. | Liquid at room temperature |
| D. | Mixture of glycerides of fatty acids |
| Answer» C. Liquid at room temperature | |
| 172. |
*/*_Viscose rayon is? |
| A. | Cellulose nitrate |
| B. | Regenerated cellulose nitrate |
| C. | Regenerated cellulose acetate |
| D. | None of these |
| Answer» E. | |
| 173. |
*/*_In the production of soda ash by Solvay process, the by-product is? |
| A. | CaCl‚ÇÇ |
| B. | NH‚ÇÑCl |
| C. | NH‚ÇÉ |
| D. | NaOH |
| Answer» B. NH‚Äö√á√ëCl | |
| 174. |
*/*_Titanium dioxide is a/an __________ colour pigment.? |
| A. | White |
| B. | Black |
| C. | Yellow |
| D. | Blue |
| Answer» B. Black | |
| 175. |
*/*_Free alkali in a toilet soap is __________ that in a laundary shop.? |
| A. | Less than |
| B. | More than |
| C. | Same |
| D. | None of these |
| Answer» B. More than | |
| 176. |
*/*_Production of one ton of dry paper pulp requires about __________ tons of bamboo or wood.? |
| A. | 1 |
| B. | 2.5 |
| C. | 5 |
| D. | 10 |
| Answer» C. 5 | |
| 177. |
*/*_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 | |
| 178. |
*/*_Dechlorination of treated water is necessary to? |
| A. | Remove residual turbidity |
| B. | Reduce the bacterial load on filter |
| C. | Control taste and odour |
| D. | Remove chlorinous taste |
| Answer» E. | |
| 179. |
*/*_Which glass is usually used in optical work?? |
| A. | Lead glass |
| B. | High silica (borosilicate) glass |
| C. | Photo-sensitive glass |
| D. | Fibre glass |
| Answer» D. Fibre glass | |
| 180. |
*/*_The most economical pulp for the production of newsprint would be the __________ pulp.? |
| A. | Groundwood |
| B. | Sulphate |
| C. | Sulphite |
| D. | Semichemical |
| Answer» B. Sulphate | |
| 181. |
*/*_The gasification reaction represented by, C + H‚ÇÇO = CO + H‚ÇÇ, is a/an __________ reaction.? |
| A. | Exothermic |
| B. | Endothermic |
| C. | Catalytic |
| D. | Autocatalytic |
| Answer» C. Catalytic | |
| 182. |
*/*_Fat dispersed in water is exemplified by? |
| A. | Colloids |
| B. | Gel |
| C. | Butter |
| D. | Emulsion |
| Answer» D. Emulsion | |
| 183. |
*/*_Average sulphur content in Indian pyrites is about __________ percent.? |
| A. | 15 |
| B. | 35 |
| C. | 55 |
| D. | 70 |
| Answer» C. 55 | |
| 184. |
*/*___________ is used as a catalyst in fat splitting.? |
| A. | ZnO |
| B. | Ni |
| C. | V‚ÇÇO‚ÇÖ |
| D. | FeO |
| Answer» B. Ni | |
| 185. |
*/*_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 | |
| 186. |
*/*_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 | |
| 187. |
*/*_Chemical name of 'alum' is? |
| A. | Barium sulphate |
| B. | Aluminium sulphate |
| C. | Aluminium chloride |
| D. | Calcium sulphate |
| Answer» C. Aluminium chloride | |
| 188. |
*/*_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 | |
| 189. |
*/*_CaO is called? |
| A. | Quick lime |
| B. | Slaked lime |
| C. | Limestone |
| D. | Calcite |
| Answer» B. Slaked lime | |
| 190. |
*/*_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 | |
| 191. |
*/*_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 | |
| 192. |
*/*_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 | |
| 193. |
*/*_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 | |
| 194. |
*/*_The enzyme which converts starch into the disacharides maltose is? |
| A. | Diastase |
| B. | Maltase |
| C. | Yeast |
| D. | None of these |
| Answer» B. Maltase | |
| 195. |
*/*_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. | |
| 196. |
*/*_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. | |
| 197. |
*/*_Pick out the wrong statement.? |
| A. | Strongly caking coal should not be used in the Lurgi gasifier |
| B. | Acetylene gas can not be used for illumination purpose |
| C. | Water gas is called blue gas because of the color of the flame, when it is burnt |
| D. | Gaseous fuels require less percentage of excess air for combustion as compared to liquid fuels |
| Answer» C. Water gas is called blue gas because of the color of the flame, when it is burnt | |
| 198. |
*/*_An alkali metal salt of palmitic acid is known as? |
| A. | Soap |
| B. | Metallic soap |
| C. | Detergent |
| D. | Alkaloid |
| Answer» C. Detergent | |
| 199. |
*/*_Air used in aerobic fermentation must be sterilized, otherwise the? |
| A. | Recovery of product will be difficult |
| B. | Contamination of pure culture would result |
| C. | Uniformity of product cannot be achieved |
| D. | None of these |
| Answer» C. Uniformity of product cannot be achieved | |
| 200. |
*/*_Sucrose is a? |
| A. | Monosacchride |
| B. | Disacchride |
| C. | Polysacchride |
| D. | None of these |
| Answer» C. Polysacchride | |