MCQOPTIONS
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MCQOPTIONS
This section includes 2253 Mcqs, each offering curated multiple-choice questions to sharpen your Chemical Engineering knowledge and support exam preparation. Choose a topic below to get started.
| 1201. |
Current asset of a factory includes the |
| A. | goodwill of the company. |
| B. | common stocks held by the company. |
| C. | manufacturing plant & equipment. |
| D. | inventory. |
| Answer» D. inventory. | |
| 1202. |
__________ is not used as the control rod material in a nuclear reactor. |
| A. | Cobalt |
| B. | Hafnium |
| C. | Cadmium |
| D. | Boron |
| Answer» B. Hafnium | |
| 1203. |
A jet engine turbine blade is normally manufactured by |
| A. | forging. |
| B. | shell moulding. |
| C. | investment casting. |
| D. | pressure die casting. |
| Answer» D. pressure die casting. | |
| 1204. |
Thermal expansion of solid is employed in the temperature measurement by a |
| A. | bimetallic thermometer. |
| B. | thermocouple. |
| C. | mercury thermometer. |
| D. | resistance thermometer. |
| Answer» B. thermocouple. | |
| 1205. |
Which of the following metals can not be extracted by pyrometallurgical process from its sulphide ore? |
| A. | Copper |
| B. | Mercury |
| C. | Lead |
| D. | None of these |
| Answer» C. Lead | |
| 1206. |
All modes of heat transfer i.e., conduction, convection & radiation occur in case of the |
| A. | condensation of steam in a partial condenser. |
| B. | boiler furnace. |
| C. | insulated pipe car raying high pressure steam. |
| D. | none of these. |
| Answer» C. insulated pipe car raying high pressure steam. | |
| 1207. |
Matte smelting is used in the extraction of |
| A. | lead |
| B. | zinc |
| C. | aluminium |
| D. | copper |
| Answer» E. | |
| 1208. |
The joint for soldering is supported by binding wire made of |
| A. | mild steel |
| B. | copper |
| C. | soft iron |
| D. | stainless steel |
| Answer» D. stainless steel | |
| 1209. |
An orthotropic material is a special class of anisotropic material, which is described by their properties in three perpendicular directions. An example of orthotropic material is |
| A. | stainless steel |
| B. | cast iron |
| C. | wood |
| D. | teflon |
| Answer» D. teflon | |
| 1210. |
Alumina, silica, lime and iron oxide are the basic raw material for the manufacture of portland cement. The component of Portland cement which first hardens is |
| A. | 5CaO . 3 Al2O3 |
| B. | 3CaO . Al2O3 |
| C. | 3CaO . SiO2 |
| D. | 2CaO . SiO2 |
| Answer» B. 3CaO . Al2O3 | |
| 1211. |
In practice, the compression ratio of compression-ignition (CI) engine ranges from |
| A. | 15 to 25 |
| B. | 5 to 10 |
| C. | 40 to 55 |
| D. | 60 to 70 |
| Answer» B. 5 to 10 | |
| 1212. |
__________ are not emitted by radioactive substances. |
| A. | α-rays |
| B. | β-rays |
| C. | protons |
| D. | positrons |
| Answer» D. positrons | |
| 1213. |
What happens, when SO2 is passed through a solution of H2S in water ? |
| A. | Precipitation of sulphur takes place. |
| B. | H2SO3 is formed. |
| C. | Oleum is formed. |
| D. | None of these. |
| Answer» B. H2SO3 is formed. | |
| 1214. |
Which of the following is a weak acid ? |
| A. | HF |
| B. | HCl |
| C. | HI |
| D. | HBr |
| Answer» B. HCl | |
| 1215. |
The product of a commercial direct reduction process is |
| A. | liquid iron |
| B. | solid iron |
| C. | sponge iron |
| D. | iron saturated with carbon |
| Answer» D. iron saturated with carbon | |
| 1216. |
__________ fluid force is not considered in the Navier-Stokes equation. |
| A. | Turbulent |
| B. | Viscous |
| C. | Gravity |
| D. | Pressure |
| Answer» B. Viscous | |
| 1217. |
The taper provided on pattern for its easy & clean withdrawal from the mould is termed as the __________ allowance. |
| A. | casting |
| B. | pattern |
| C. | draft |
| D. | distoration |
| Answer» D. distoration | |
| 1218. |
In a fuel cell, chemical energy is converted into |
| A. | electrical energy directly. |
| B. | mechanical energy. |
| C. | electrical energy and stored therein. |
| D. | none of these. |
| Answer» B. mechanical energy. | |
| 1219. |
When the weight of a ball inside the ball mill is just balanced by the centrifugal force, |
| A. | the ball abandons its circular path for a parabolic path. |
| B. | the ball abandans its parabolic path for a circular path. |
| C. | the ball continues to move on a circular path. |
| D. | the ball continues to move on a parabolic path. |
| Answer» B. the ball abandans its parabolic path for a circular path. | |
| 1220. |
Cold heading or upsetting is categorised as the __________ process. |
| A. | extrusion |
| B. | bending |
| C. | rolling |
| D. | forging |
| Answer» E. | |
| 1221. |
An example of a buffer solution is |
| A. | mercury |
| B. | lime water |
| C. | human blood |
| D. | concentrated nitric acid |
| Answer» D. concentrated nitric acid | |
| 1222. |
Fibre glass is a composite material of |
| A. | glass fibre in a polymer matrix. |
| B. | glass fibre in a metallic matrix. |
| C. | polymer fibre in a glassy matrix. |
| D. | both 'b' & 'c'. |
| Answer» B. glass fibre in a metallic matrix. | |
| 1223. |
In multipass welds, shot peening is done after each pass to |
| A. | close the surface porosity. |
| B. | break the continuity of columnar grains. |
| C. | flatten the weldment. |
| D. | introduce texture in the weld. |
| Answer» B. break the continuity of columnar grains. | |
| 1224. |
Which of the following fastening devices has its both ends threaded ? |
| A. | Bolt |
| B. | Stud |
| C. | Set screw |
| D. | Split nut |
| Answer» C. Set screw | |
| 1225. |
Steel is welded using the __________ flame. |
| A. | carburising |
| B. | neutral |
| C. | oxidising |
| D. | all (a), (b) & (c) |
| Answer» C. oxidising | |
| 1226. |
__________ rubber is generally used for making 'O' rings used for vacuum sealings. |
| A. | Natural |
| B. | Neoprene |
| C. | Butadiene |
| D. | Nitrile |
| Answer» C. Butadiene | |
| 1227. |
__________ the exhaust gas is an indication of the incomplete combustion of fuel. |
| A. | Low temperature of |
| B. | High temperature of |
| C. | High % of CO in |
| D. | High % of CO2 in |
| Answer» D. High % of CO2 in | |
| 1228. |
Depreciation of machines fails under the indirect expenses head. As per income tax regulations, it is calculated by the __________ method. |
| A. | diminishing balance |
| B. | sinking fund |
| C. | multiple straight line |
| D. | sum of the years digit |
| Answer» B. sinking fund | |
| 1229. |
Fatigue limit of a material should not be increased by |
| A. | shot peening |
| B. | surface decarburisation |
| C. | understressing |
| D. | cold working |
| Answer» C. understressing | |
| 1230. |
M10 index of coke indicates its |
| A. | compressive strength. |
| B. | hardness. |
| C. | abrasion resistance. |
| D. | impact strength. |
| Answer» D. impact strength. | |
| 1231. |
Larger length & diameter water pipes are made by |
| A. | electrical resistance welding. |
| B. | die casting. |
| C. | semi-centrifugal casting. |
| D. | continuous casting. |
| Answer» D. continuous casting. | |
| 1232. |
Three elastic constants for a completely anisotropic elastic material which follows the Hooke's law are young's modulus, elastic limit stress and yield stress. Which of the following properties is most sensitive to increase in strain rate ? |
| A. | Tensile strength. |
| B. | Elastic limit. |
| C. | Proportional limit. |
| D. | Yield strength. |
| Answer» D. Yield strength. | |
| 1233. |
The main charge in blast furnace is usually |
| A. | iron ore & coke. |
| B. | iron ore, coke & air. |
| C. | limestone, coke & iron ore. |
| D. | limestone, sand & iron ore. |
| Answer» D. limestone, sand & iron ore. | |
| 1234. |
For grinding of softer materials, the grinding wheel should have __________ grain size. |
| A. | finer |
| B. | coarser |
| C. | medium |
| D. | any type of |
| Answer» C. medium | |
| 1235. |
Corrosion rate can not be lowered by reducing the __________ of the corroding medium. |
| A. | concentration |
| B. | velocity |
| C. | temperature |
| D. | none of these |
| Answer» B. velocity | |
| 1236. |
Which of the following is not the function of a volute casing provided in a centrifugal pump ? |
| A. | To reduce the head loss in discharge. |
| B. | To increase the pump efficiency. |
| C. | To collect liquid from the periphery of the impeller and to transmit it to the delivery pipe at constant velocity. |
| D. | To increase the pump discharge rate. |
| Answer» E. | |
| 1237. |
While the recrystallisation temperature for pure metals is 0.3 Tm, the same for alloys is equal to __________ x Tm (where, Tm Melting temperature). |
| A. | 0.25 |
| B. | 0.45 |
| C. | 0.7 |
| D. | 0.95 |
| Answer» D. 0.95 | |
| 1238. |
Which of the following gases cause global warming ? |
| A. | Carbon monoxide |
| B. | Carbon dioxide |
| C. | Nitrogen |
| D. | Ozone |
| Answer» C. Nitrogen | |
| 1239. |
An "orange peel" effect is observed |
| A. | as a defect during metal casting/ welding. |
| B. | during deep drawing of metallic sheet having large grain size. |
| C. | during faulty heat treatment of steel. |
| D. | during extrusion of metal through a die. |
| Answer» C. during faulty heat treatment of steel. | |
| 1240. |
The power of a low capacity prime mover is most suitably measured by a __________ type dynamometer. |
| A. | driving |
| B. | transmission |
| C. | absorption |
| D. | none of these |
| Answer» D. none of these | |
| 1241. |
Monazite deposits constitute an important source for the following metal. |
| A. | Thorium |
| B. | Titanium |
| C. | Molybdenum |
| D. | None of the above |
| Answer» B. Titanium | |
| 1242. |
Damage to metal surface by mechanical action is called |
| A. | pitting |
| B. | corrosion |
| C. | erosion |
| D. | none of these |
| Answer» D. none of these | |
| 1243. |
On being hit with a hammer, __________ will readily fracture. |
| A. | brass |
| B. | mild steel |
| C. | cast iron |
| D. | lead |
| Answer» D. lead | |
| 1244. |
In case of brasses, with decreasing zinc percentage and increasing copper percentage, its __________ increases. |
| A. | percentage elongation |
| B. | brinell hardness |
| C. | tensile strength |
| D. | all 'a' , 'b' & 'c' |
| Answer» B. brinell hardness | |
| 1245. |
If a heat transfer surface is pock-marked with a number of cavities, then as compared to a smooth surface the heat transfer by __________ will not increase. |
| A. | convection |
| B. | nucleate boiling |
| C. | radiation |
| D. | conduction |
| Answer» B. nucleate boiling | |
| 1246. |
Pick out the wrong statement about coating/electroplating of metals. |
| A. | Phosphate coating is used as an excellent base for paints & enamels. |
| B. | Phosphate coating is less corrosion resistant than chromate coating. |
| C. | The base metal to be electroplated is normally made the cathode of the electrolytic cell and coating metal is made the anode. |
| D. | Calorising is the process of coating steel with chromium. |
| Answer» E. | |
| 1247. |
Magnesium addition to cast iron increases its |
| A. | corrosion resistance. |
| B. | creep strength. |
| C. | ductility and strength in tension. |
| D. | hardness. |
| Answer» D. hardness. | |
| 1248. |
Minimum temperature upto which water can be theoretically cooled down in the cooling tower by evaporative cooling is equal to the __________ temperature of air. |
| A. | wet bulb |
| B. | dry bulb |
| C. | saturation |
| D. | dew point |
| Answer» B. dry bulb | |
| 1249. |
Carnot cycle is also termed as the constant __________ cycle in thermodynamics. |
| A. | entropy |
| B. | pressure |
| C. | volume |
| D. | heat |
| Answer» E. | |
| 1250. |
For efficient performance of a blast furnace, the extent of reduction of Wustite (FeO) should be |
| A. | 100% indirect reduction. |
| B. | 100% direct reduction. |
| C. | 50-60% indirect reduction. |
| D. | 30-40% indirect reduction. |
| Answer» D. 30-40% indirect reduction. | |