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.
| 1151. |
Catalyst used in the oxidation of benzene to produce maleic anhydride is |
| A. | V₂O₅ |
| B. | Pt |
| C. | Ni |
| D. | Cr |
| Answer» B. Pt | |
| 1152. |
Pick out the wrong statement pertaining to solvent extraction of oil.Rate of extraction |
| A. | Decreases with decrease of thickness of the flakes |
| B. | Increases with the increasing flake size keeping the flake thickness constant |
| C. | Increases Considerably with the rise of temperature |
| D. | Decreases as the moisture content of flakes increases |
| Answer» E. | |
| 1153. |
Dehydrogenation of ethyl benzene produces |
| A. | Styrene |
| B. | Naphthalene |
| C. | Phenol |
| D. | Benzoic acid |
| Answer» B. Naphthalene | |
| 1154. |
Synthetic glycerine is produced from |
| A. | Toluene |
| B. | Phenol |
| C. | Propylene |
| D. | Naphthalene |
| Answer» D. Naphthalene | |
| 1155. |
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 | |
| 1156. |
Poly tetraflouro ethylene (P.T.F.E.) is known as |
| A. | Bakelite |
| B. | Teflon |
| C. | Celluloid |
| D. | Decron |
| Answer» C. Celluloid | |
| 1157. |
Styrene is produced from ethyl benzene by the process of |
| A. | Dehydrogenation |
| B. | Oxidation |
| C. | Alkylation |
| D. | Dehydration |
| Answer» B. Oxidation | |
| 1158. |
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 | |
| 1159. |
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 | |
| 1160. |
Thermoplastic materials |
| A. | Do not soften on application of heat |
| B. | Are heavily branched molecules |
| C. | Are solvent insoluble |
| D. | None of these |
| Answer» E. | |
| 1161. |
The most commonly used substance to speed up the sedimentation of sewage is |
| A. | Lime |
| B. | Sulphuric acid |
| C. | Chlorine |
| D. | Sodium bisulphite |
| Answer» B. Sulphuric acid | |
| 1162. |
One of the steps during refining of cane sugar consists of addition of hydrated lime to the sugar syrup followed by carbonation of the resulting solution. The purpose of this step is to |
| A. | Adjust the pH of the syrup |
| B. | Remove the coloring matter from the syrup |
| C. | Reduce the viscosity of the syrup |
| D. | Improve the rate of crystallisation of sugar |
| Answer» B. Remove the coloring matter from the syrup | |
| 1163. |
The major use of butadiene is |
| A. | As a plasticiser for unsaturated polyester |
| B. | In the manufacture of synthetic rubber |
| C. | As an anti-skinning agent in paint |
| D. | None of these |
| Answer» C. As an anti-skinning agent in paint | |
| 1164. |
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 | |
| 1165. |
Which of the following is a detergent? |
| A. | Benzene hexachloride |
| B. | Alkyl benzene sulphonate |
| C. | Polytetraflouroethylene |
| D. | Cellulose nitrate |
| Answer» C. Polytetraflouroethylene | |
| 1166. |
A cane sugar factory having sugar production rate of 10 tons/day will produce about __________ tons/day of bagasse (after consumption by the factory for heating etc.). |
| A. | 1 |
| B. | 10 |
| C. | 25 |
| D. | 40 |
| Answer» C. 25 | |
| 1167. |
The chamber process is |
| A. | Preferred over contact process for producing 98 to 100% H₂SO₄ and various oleums |
| B. | Non-catalytic and operates only on pyrites |
| C. | A batch process for directly producing high strength (98 to 100%) H₂SO₄ |
| D. | None of these |
| Answer» E. | |
| 1168. |
Terylene is |
| A. | Same as dacron |
| B. | A polyester |
| C. | Both A & B |
| D. | Neither A nor B |
| Answer» D. Neither A nor B | |
| 1169. |
Sodium salt of higher molecular weight fatty acid is termed as the __________ soap. |
| A. | Hard |
| B. | Soft |
| C. | Metallic |
| D. | Lubricating |
| Answer» C. Metallic | |
| 1170. |
Esterification reaction produces |
| A. | Detergent |
| B. | Vanaspati |
| C. | Soap |
| D. | Mercaptans |
| Answer» D. Mercaptans | |
| 1171. |
Drinking (potable) water treatment does not involve |
| A. | Coagulation |
| B. | Sedimentation |
| C. | Softening |
| D. | Disinfection |
| Answer» D. Disinfection | |
| 1172. |
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. | |
| 1173. |
Bromine content in sea water may be around __________ ppm. |
| A. | 70 |
| B. | 640 |
| C. | 1875 |
| D. | 2500 |
| Answer» B. 640 | |
| 1174. |
In the manufacture of viscose rayon, the raw material used industrially is |
| A. | Recalyptious wood |
| B. | Bamboo |
| C. | Bagasse |
| D. | Fine teak wood |
| Answer» E. | |
| 1175. |
Caprolactum (a raw material for nylon-6 manufacture) is produced from |
| A. | Phenol |
| B. | Naphthalene |
| C. | Benzene |
| D. | Pyridine |
| Answer» D. Pyridine | |
| 1176. |
__________ glass is used for the manufacture of optical glass. |
| A. | Pyrex |
| B. | Soda |
| C. | Flint |
| D. | Crooke's |
| Answer» D. Crooke's | |
| 1177. |
In sulphate pulp manufacture, the pressure and temperature in the digestor is |
| A. | 10 atm., 800 °C |
| B. | 10 atm., 170-180°C |
| C. | 1 atm., 170 - 180°C |
| D. | L atm., 800°C |
| Answer» C. 1 atm., 170 - 180°C | |
| 1178. |
Teflon is |
| A. | Phenol formaldehyde |
| B. | An inorganic polymer |
| C. | Poly tetrafluoroethylene (P.T.F.E.) |
| D. | A monomer |
| Answer» D. A monomer | |
| 1179. |
Triple superphosphate is manufactured by reacting |
| A. | Phosphate rock with phosphoric acid |
| B. | Phosphate rock with sulphuric acid |
| C. | Phosphate rock with nitric acid |
| D. | Ammonium phosphate with phosphoric acid |
| Answer» B. Phosphate rock with sulphuric acid | |
| 1180. |
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 of the above |
| Answer» E. | |
| 1181. |
Alcohol percentage in molasses may be around |
| A. | 10 |
| B. | 40 |
| C. | 70 |
| D. | 85 |
| Answer» C. 70 | |
| 1182. |
Which form of sulphur is the most stable at room temperature? |
| A. | Plastic |
| B. | Monoclinic |
| C. | Rhombic |
| D. | Flowers of sulphur |
| Answer» D. Flowers of sulphur | |
| 1183. |
An alkali metal salt of palmitic acid is known as |
| A. | Soap |
| B. | Metallic soap |
| C. | Detergent |
| D. | Alkaloid |
| Answer» C. Detergent | |
| 1184. |
Vegetable oils contain large quantity of glycerides of unsaturated acids. When the vegetable oils contain high amount of saturated fatty acids, it is termed as __________ oil. |
| A. | Drying |
| B. | Semi-drying |
| C. | Non-drying |
| D. | None of these |
| Answer» D. None of these | |
| 1185. |
Glauber's salt is chemically represented by |
| A. | Na₂SO₄.10H₂O |
| B. | CaCl(OCl) |
| C. | CaSO₄.H₂O |
| D. | (NH₄)₂SO₄ |
| Answer» B. CaCl(OCl) | |
| 1186. |
Alum [Al2(SO₄)₃] is used as a coagulant in water treatment to remove |
| A. | Colour |
| B. | Turbidity |
| C. | Bacteria |
| D. | All of the above |
| Answer» E. | |
| 1187. |
Platinum catalyst used in the earlier days of sulphuric acid manufacture by contact process suffers from the drawback like |
| A. | High cost |
| B. | Fragile nature |
| C. | Easy poisoning tendency |
| D. | All of the above |
| Answer» E. | |
| 1188. |
The type of high refractive index glass used in optical instruments is __________ glass. |
| A. | Pyrex |
| B. | Flint |
| C. | Crookes |
| D. | None of these |
| Answer» C. Crookes | |
| 1189. |
Main constituents of natural rubber is |
| A. | Polystyrene |
| B. | Polyisoprene |
| C. | Polybutadiene |
| D. | Polychloroprene |
| Answer» C. Polybutadiene | |
| 1190. |
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 | |
| 1191. |
Raw materials used for producing __________ cement does not contain iron oxide. |
| A. | Waterproof |
| B. | Slag |
| C. | White |
| D. | Pozzolan |
| Answer» D. Pozzolan | |
| 1192. |
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 | |
| 1193. |
__________ is not a constituent of gun powder. |
| A. | Carbon |
| B. | Charcoal |
| C. | Sulphur |
| D. | Potassium nitrate |
| Answer» B. Charcoal | |
| 1194. |
Systemic insecticides |
| A. | Are absorbed throughout the plant |
| B. | Kill insects following external bodily contact |
| C. | Are stomach poisons |
| D. | Emit poisonous vapour |
| Answer» B. Kill insects following external bodily contact | |
| 1195. |
Synthesis gas is a mixture of |
| A. | CO and H₂ |
| B. | N₂ and H₂ |
| C. | H₂, CH₄ and CO |
| D. | CO₂ and H₂ |
| Answer» B. N₂ and H₂ | |
| 1196. |
Solvay process is not used for the manufacture of potassium carbonate, because of the reason that potassium bicarbonate |
| A. | Is prone to thermal decomposition |
| B. | Has high water solubility and is unstable |
| C. | Is soluble in ammonium chloride and potassium chloride solution |
| D. | All of the above |
| Answer» D. All of the above | |
| 1197. |
Solvent extracted oil |
| A. | Has low free fatty acid content |
| B. | Is odourless |
| C. | Has more of unsaturates |
| D. | None of these |
| Answer» E. | |
| 1198. |
Which allotrope of sulphur is insoluble in carbon disulphide? |
| A. | Rhombic sulphur |
| B. | Monoclinic sulphur |
| C. | Plastic sulphur |
| D. | Milk of sulphur |
| Answer» D. Milk of sulphur | |
| 1199. |
Soaps remove dirt by |
| A. | Increasing the surface tension |
| B. | Decreasing wettability |
| C. | Supplying hydrophyllic group |
| D. | None of these |
| Answer» E. | |
| 1200. |
Production of alcohol by fermentation of molasses is an __________ process. |
| A. | Anaerobic |
| B. | Aerobic |
| C. | Endothermic |
| D. | Both B and C |
| Answer» C. Endothermic | |