MCQOPTIONS
Saved Bookmarks
MCQOPTIONS
This section includes 400 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. |
Molten phthalic anhydride is stored in a/an _______________ vessel? |
| A. | Aluminium |
| B. | Nickel clad steel |
| C. | Lead lined steel |
| D. | Glass lined steel |
| Answer» B. Nickel clad steel | |
| 152. |
Molybdenum steels containing 0.15 to 0.40% molybdenum___________________? |
| A. | Are prone to temper brittleness |
| B. | Are used for automobile parts like gears, axle, shaft, bearings etc. |
| C. | Have very poor fatigue resistance |
| D. | Do not contain nickel or chromium or both |
| Answer» C. Have very poor fatigue resistance | |
| 153. |
Mixing vessel used for the chlorination of methane to produce methyl chloride is made of___________________? |
| A. | Copper |
| B. | Cast iron |
| C. | Aluminium |
| D. | High carbon steel |
| Answer» C. Aluminium | |
| 154. |
Mild steel storage vessels are suitable for the storage of___________________? |
| A. | Anhydrous ammonia |
| B. | Fatty acids |
| C. | Hydrochloric acid (95%) |
| D. | Sulphuric acid (25%) |
| Answer» B. Fatty acids | |
| 155. |
Mild steel is ___________________? |
| A. | A low carbon steel (0.05 to 0.3% carbon) |
| B. | Highly resistant to corrosion (as much as stainless steel) |
| C. | A high carbon steel (0.5 to 1.5% carbon) |
| D. | Very poor in strength & ductility |
| Answer» B. Highly resistant to corrosion (as much as stainless steel) | |
| 156. |
Mild steel is used for making___________________? |
| A. | Fish plates |
| B. | Die block |
| C. | Channels |
| D. | Drop forging |
| Answer» D. Drop forging | |
| 157. |
Mild steel is a/an _____________ steel? |
| A. | Low carbon |
| B. | Medium carbon |
| C. | High carbon |
| D. | High alloy |
| Answer» B. Medium carbon | |
| 158. |
Mild steel is a/an ______________ steel? |
| A. | Low carbon |
| B. | Medium carbon |
| C. | High carbon |
| D. | High alloy |
| Answer» B. Medium carbon | |
| 159. |
Metalloid is_______________________? |
| A. | An element, which exhibits the properties of both metal & non metal |
| B. | Highly electronegative in nature |
| C. | An alloy |
| D. | All A., B. & C. |
| Answer» B. Highly electronegative in nature | |
| 160. |
Metalloid is__________________? |
| A. | Highly electronegative in nature |
| B. | An element which exhibits the properties of both metal & non-metal |
| C. | An alloy |
| D. | All A., B. and C. |
| Answer» C. An alloy | |
| 161. |
Metal at the top of the electromotive series is________________? |
| A. | Least active |
| B. | Most stable |
| C. | Most active |
| D. | Most noble |
| Answer» D. Most noble | |
| 162. |
Mercury is transported in metal containers made of________________? |
| A. | Aluminium |
| B. | Iron |
| C. | Lead |
| D. | Nickel |
| Answer» C. Lead | |
| 163. |
Maximum permissible sulphur content in steel is ______________ percent? |
| A. | 0.015 |
| B. | 0.055 |
| C. | 0.505 |
| D. | 0.805 |
| Answer» C. 0.505 | |
| 164. |
Maximum consumption of zinc is in____________________? |
| A. | Alloying |
| B. | Galvanising |
| C. | Utensil manufacture |
| D. | Electrical industry |
| Answer» C. Utensil manufacture | |
| 165. |
Maximum consumption of lead is in the manufacture of _________________________? |
| A. | Storage batteries |
| B. | Solder alloys |
| C. | Electric cable sheathing |
| D. | Lead lined vessels |
| Answer» B. Solder alloys | |
| 166. |
Maximum consumption of copper is in__________________? |
| A. | Utensil manufacture |
| B. | Electrical industry |
| C. | Industrial equipment manufacture |
| D. | Small scale industries |
| Answer» C. Industrial equipment manufacture | |
| 167. |
Maximum carbon content in any variety of steel can be upto 1.3%. Steel containing 0.4% Carbon is not used for making___________________? |
| A. | Nuts |
| B. | Bolts |
| C. | Chisels |
| D. | Studs |
| Answer» D. Studs | |
| 168. |
Maximum carbon content in cast iron is ______________ percent? |
| A. | 3.8 |
| B. | 5.2 |
| C. | 4.8 |
| D. | 4.3 |
| Answer» E. | |
| 169. |
Materials having _____________ lattice structure are usually most ductile? |
| A. | FCC |
| B. | BCC |
| C. | HCP |
| D. | Cubic |
| Answer» B. BCC | |
| 170. |
Manganese in steel affects its__________________? |
| A. | Ductility |
| B. | Tensile strength |
| C. | Hardness |
| D. | None of these |
| Answer» B. Tensile strength | |
| 171. |
Low carbon steels are those in which carbon percentage is around____________________? |
| A. | 0.1 to 0.35 |
| B. | 0.4 to 0.7 |
| C. | 0.8 to 1.5 |
| D. | 1.5 to 2 |
| Answer» B. 0.4 to 0.7 | |
| 172. |
Locomotive boiler tubes are made of _____________ alloys? |
| A. | Arsenic copper |
| B. | Magnesium |
| C. | Aluminium |
| D. | Nickel |
| Answer» B. Magnesium | |
| 173. |
Liquid ammonia is shipped in _____________ containers? |
| A. | Steel |
| B. | Aluminium |
| C. | Glass |
| D. | Lead lined |
| Answer» D. Lead lined | |
| 174. |
Liners of a ball mill are never made of__________________? |
| A. | Lead |
| B. | Alloy steel |
| C. | Rubber or ceramic material |
| D. | Cast iron |
| Answer» B. Alloy steel | |
| 175. |
Light weight metallic alloy used in aircraft industry is________________? |
| A. | Aluminium |
| B. | High silicon (14%) iron |
| C. | Duralumin |
| D. | Phosphor bronze |
| Answer» D. Phosphor bronze | |
| 176. |
Lead_________________? |
| A. | Is the hardest metal in common use |
| B. | Is the lightest metal in common use |
| C. | Cannot be scratched by finger nails |
| D. | Cannot be work hardened |
| Answer» E. | |
| 177. |
Lead pipes are not safe for carrying drinking water, because water, containing dissolved oxygen attacks lead thereby forming poisonous Pb(OH)2. Lead pipes are readily corroded by___________________? |
| A. | Dilute HCl |
| B. | Acetic acid |
| C. | Concentrated H2SO4 |
| D. | None of these |
| Answer» C. Concentrated H2SO4 | |
| 178. |
Lead pipes are not safe for carrying drinking water because water containing dissolved oxygen attacks lead thereby forming poisonous Pb (OH)2. Lead pipes are readily corroded by_________________? |
| A. | Dilute HCI |
| B. | Acetic acid |
| C. | Concentrated H2SO4 |
| D. | None of these |
| Answer» C. Concentrated H2SO4 | |
| 179. |
Lead pipe is_____________________? |
| A. | Especially resistant to solutions containing H2SO4 |
| B. | Usually joined by burning (e.g. by melting to adjacent pieces with a torch) |
| C. | Having very low elastic limit resulting in permanent deformation from either mechanical or thermal strain |
| D. | All A., B. and C. |
| Answer» E. | |
| 180. |
Lead lined equipments & vessels are suitable for handling __________________? |
| A. | Hydrochloric acid (10%) |
| B. | Nitric acid |
| C. | Sulphuric acid upto 60°C |
| D. | All A., B. and C. |
| Answer» D. All A., B. and C. | |
| 181. |
Lead is_____________________? |
| A. | Not resistant to corrosion |
| B. | Used as a cathodic material |
| C. | Not used as pigment (in its compound forms) for paints |
| D. | Used as a shock absorber (in mattress form) between the foundation and steel framework of skyscraper buildings |
| Answer» E. | |
| 182. |
Lead alone is not used in storing equipment, because it________________? |
| A. | Is very costly |
| B. | Corrodes easily |
| C. | Is having low creep strength |
| D. | None of these |
| Answer» D. None of these | |
| 183. |
Kel-F is a material, which is________________? |
| A. | Chemically known as Polychlorotrifluoroethylene (PTFE) |
| B. | Having excellent chemical & high temperature resistance (upto 200°C) |
| C. | Having elastomeric properties |
| D. | All A., B. and C. |
| Answer» E. | |
| 184. |
Karbate is____________________? |
| A. | A mixture of iron dust and saw dust |
| B. | Carbon impregnated with resin (usually Bakelite) |
| C. | An acid resistant material |
| D. | Both B. and C. |
| Answer» E. | |
| 185. |
_____________________ is used for determining the tensile strength of steels ? |
| A. | Hydraulic press |
| B. | Universal testing machine |
| C. | Mechanical press |
| D. | None of these |
| Answer» C. Mechanical press | |
| 186. |
_____________ is used for examining the macro-structure of a material? |
| A. | Metallurgical microscope |
| B. | Optical microscope |
| C. | X-rays |
| D. | Visual inspection by naked eye |
| Answer» E. | |
| 187. |
______________ is not a case hardening process? |
| A. | Carburising |
| B. | Nitriding |
| C. | Cyaniding |
| D. | Annealing |
| Answer» E. | |
| 188. |
______________ is never shipped in glass carboys? |
| A. | Ammonia |
| B. | Acetic acid |
| C. | Phenol |
| D. | Formaldehyde |
| Answer» B. Acetic acid | |
| 189. |
_____________ is added in stainless steel to prevent inter crystal corrosion? |
| A. | Vanadium |
| B. | Niobium |
| C. | Chromium |
| D. | Nickel |
| Answer» C. Chromium | |
| 190. |
_____________ is added in low carbon steel to raise its yield point? |
| A. | Sulphur |
| B. | Phosphorous |
| C. | Silicon |
| D. | Manganese |
| Answer» E. | |
| 191. |
_______________ is a donor impurity for semi-conductors ? |
| A. | Boron |
| B. | Antimony |
| C. | Gallium |
| D. | None of these |
| Answer» C. Gallium | |
| 192. |
Iron rust is_________________? |
| A. | Ferrous oxide |
| B. | Hydrated ferric oxide |
| C. | Powdered iron |
| D. | Ferric sulphide |
| Answer» C. Powdered iron | |
| 193. |
_____________ iron is produced, when molten pig iron is chilled suddenly? |
| A. | White cast |
| B. | Grey cast |
| C. | Wrought |
| D. | None of these |
| Answer» B. Grey cast | |
| 194. |
______________ iron is produced, when molten pig iron is allowed to cool gradually? |
| A. | White cast |
| B. | Grey cast |
| C. | Wrought |
| D. | None of these |
| Answer» C. Wrought | |
| 195. |
Iron alloyed with carbon upto 2% is called___________________? |
| A. | Pig iron |
| B. | Wrought iron |
| C. | High carbon steel |
| D. | None of these |
| Answer» E. | |
| 196. |
Invar used in thermocouples is an alloy of nickel and________________? |
| A. | Iron |
| B. | Copper |
| C. | Chromium |
| D. | Lead |
| Answer» B. Copper | |
| 197. |
Invar contains the highest percentage of___________________? |
| A. | Vanadium |
| B. | Iron |
| C. | Tungsten |
| D. | Cobalt |
| Answer» C. Tungsten | |
| 198. |
Interchain forces are the weakest in case of________________? |
| A. | Plastics |
| B. | Fibres |
| C. | Elastomers |
| D. | Both rubber & elastomers |
| Answer» E. | |
| 199. |
Inconel is an alloy of_________________? |
| A. | Tin, zinc and nickel |
| B. | Iron, nickel and chromium |
| C. | Copper and nickel |
| D. | Copper and tin |
| Answer» C. Copper and nickel | |
| 200. |
In the Kraft process of sulphate paper pulp manufacture, the black liquor and the white liquor storage tank is made of _______________? |
| A. | Concrete |
| B. | Wood |
| C. | Steel |
| D. | Porcelain |
| Answer» D. Porcelain | |