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.
| 201. |
The temperature at which ferromagnetic material can no longer be magnetized by the outside forces, is termed as the____________________? |
| A. | Critical point |
| B. | Curie temperature |
| C. | Inversion temperature |
| D. | Eutectic temperature |
| Answer» C. Inversion temperature | |
| 202. |
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. | Distortion |
| Answer» D. Distortion | |
| 203. |
The swift cup test evaluates the following property of a sheet metal ? |
| A. | Stretchability |
| B. | Drawability |
| C. | Bendability |
| D. | None of these |
| Answer» C. Bendability | |
| 204. |
The surface tension of a liquid, at critical temperature is____________________? |
| A. | Indeterminate |
| B. | Zero |
| C. | Infinity |
| D. | Same as that at any other temperature |
| Answer» C. Infinity | |
| 205. |
The substance used as a smoke screen in warfare is___________________? |
| A. | C2H2 |
| B. | SiCl4 |
| C. | P2O5 |
| D. | PCl5 |
| Answer» C. P2O5 | |
| 206. |
The stress at which extension of the material takes place more rapidly as compared to the increase in load is termed as the _____________ point of the material? |
| A. | Elastic |
| B. | Ultimate |
| C. | Yielding |
| D. | Breaking |
| Answer» D. Breaking | |
| 207. |
The starting of a car takes time in winter, because the__________________? |
| A. | Octane number of fuel is decreased |
| B. | Fuel supply for ignition is not sufficient |
| C. | Vaporisation of the fuel is decreased |
| D. | Pour point of fuel decreases |
| Answer» D. Pour point of fuel decreases | |
| 208. |
The specific gravity of coal depends mainly on its __________________ content ? |
| A. | Carbon |
| B. | Volatile matter |
| C. | Ash |
| D. | Moisture |
| Answer» E. | |
| 209. |
The softness or hardness of a grinding wheel depends upon the type & amount of bonding material used. For general purpose cutter grinding _______________ grinding wheel is normally used ? |
| A. | Hard |
| B. | Soft |
| C. | Silicon carbide |
| D. | Aluminium oxide |
| Answer» E. | |
| 210. |
The same volume of all gases is representative of their_____________________? |
| A. | Specific gravities |
| B. | Densities |
| C. | Gas characteristic constants |
| D. | Molecular weights |
| Answer» E. | |
| 211. |
The rolling process cannot be used to produce______________________? |
| A. | Plates |
| B. | Rods |
| C. | Tubes |
| D. | Wires |
| Answer» D. Wires | |
| 212. |
The refrigerant freon-12 is chemically_______________________? |
| A. | CCl2F2 |
| B. | CCl3F |
| C. | CClF3 |
| D. | CCl4F |
| Answer» B. CCl3F | |
| 213. |
The refractory lining of the bottom in a basic electric arc furnace is made of___________________? |
| A. | Silica |
| B. | Alumina |
| C. | Magnesia |
| D. | Fireclay |
| Answer» D. Fireclay | |
| 214. |
The refractory brick which has good thermal shock resistance at high temperature but cracks on cooling below 400°C is__________________? |
| A. | Magnesite |
| B. | Chrome |
| C. | Silica |
| D. | Fireclay |
| Answer» D. Fireclay | |
| 215. |
The ratio of thermal & electrical conductivity is same for all the metals at the same temperature; and at around room temperature, this ratio is proportional to(where, T = absolute temperature, °K) ? |
| A. | T |
| B. | 1/T |
| C. | T2 |
| D. | 1/T2 |
| Answer» B. 1/T | |
| 216. |
The ratio of the shear stress to the principal stress on a principal plane is______________________? |
| A. | 0 |
| B. | 1 |
| C. | 1/2 |
| D. | 1/3 |
| Answer» B. 1 | |
| 217. |
The ratio of mass of a neutron to that of an electron is about 1839. What is the ratio of the mass of a proton to that of an electron ? |
| A. | 159 |
| B. | 1837 |
| C. | 2537 |
| D. | 10000 |
| Answer» D. 10000 | |
| 218. |
The property of material, by which a given amount of energy is absorbed by it without plastic deformation, is called the________________________? |
| A. | Resilience |
| B. | Toughness |
| C. | Ductility |
| D. | Impact strength |
| Answer» B. Toughness | |
| 219. |
The property of material, by which a given amount of energy is absorbed by it, without plastic deformation, is called__________________? |
| A. | Resilience |
| B. | Toughness |
| C. | Ductility |
| D. | Impact strength |
| Answer» B. Toughness | |
| 220. |
The product (s) of roasting of a sulphide ore is (are) ? |
| A. | Oxide only |
| B. | Sulphate only |
| C. | Oxide and sulphate |
| D. | Dependent on temperature and partial pressure of oxygen & sulphur dioxide |
| Answer» B. Sulphate only | |
| 221. |
The product out from a cupola is called ____________________? |
| A. | Wrought iron |
| B. | Pig iron |
| C. | Cast iron |
| D. | None of these |
| Answer» D. None of these | |
| 222. |
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 | |
| 223. |
The process of removal of scale formed during hot rolling of steel is termed as_________________? |
| A. | Descaling |
| B. | Shot blasting |
| C. | Pickling |
| D. | Skimming |
| Answer» D. Skimming | |
| 224. |
The pressure outside a bubble/droplet of liquid is ________________ the internal pressure? |
| A. | Greater than |
| B. | Less than |
| C. | Equal to |
| D. | Unpredictable; depends on the bubble size |
| Answer» C. Equal to | |
| 225. |
The pressure drop per unit length for laminar flow of fluid through a long pipe is proportional to (where, A = cross-sectional area of the pipe & D = Diameter of the pipe) ? |
| A. | A |
| B. | D |
| C. | 1/A |
| D. | 1/A2 |
| Answer» D. 1/A2 | |
| 226. |
The phenomenon occurring during explosion of a hydrogen bomb is___________________? |
| A. | Nuclear fission |
| B. | Nuclear fusion |
| C. | A combination of both nuclear fission & fusion |
| D. | None of these |
| Answer» D. None of these | |
| 227. |
The passage between the nozzle and the _______________________ is called ‘sprue’ in case of injection moulding? |
| A. | Runner |
| B. | Cylinder |
| C. | Mold |
| D. | None of these |
| Answer» B. Cylinder | |
| 228. |
The order of a chemical reaction____________________? |
| A. | Can be determined only experimentally |
| B. | Can be determined from the stoichiometry of the reaction |
| C. | Cannot be zero |
| D. | Can be fractional |
| Answer» C. Cannot be zero | |
| 229. |
The normal stress is the same in all directions at a point in a fluid, only when the fluid__________________? |
| A. | Is at rest & has zero viscosity |
| B. | Is frictionless |
| C. | Fluid layer has no motion relative to an adjacent layer of fluid |
| D. | is incompressible & frictionless |
| Answer» E. | |
| 230. |
The noble metals________________? |
| A. | Are exemplified by Na, K and Li |
| B. | Do not resist corrosion very strongly |
| C. | Are the lowermost in the electro-chemical series of metals |
| D. | None of these |
| Answer» D. None of these | |
| 231. |
The most suitable material of construction for a sewer to carry sewage under high pressure is________________________? |
| A. | Asbestos cement |
| B. | Steel |
| C. | Cement concrete |
| D. | Stoneware |
| Answer» C. Cement concrete | |
| 232. |
The most suitable material for die casting is __________________? |
| A. | Iron |
| B. | Copper |
| C. | Steel |
| D. | Nickel |
| Answer» C. Steel | |
| 233. |
The most prominent single cause of corrosion in boiler-tubes, drums, economisers and steam superheaters in a thermal power plant boiler is the_______________? |
| A. | Water alkalinity & leakage |
| B. | Hydrazine addition during feed water treatment |
| C. | Release of non-condensable gas from water in the boiler |
| D. | Scale formation |
| Answer» D. Scale formation | |
| 234. |
The most important requirement for aluminium industry is the availability of cheap _______________? |
| A. | Ore |
| B. | Electrical power |
| C. | Labour |
| D. | Abundant water |
| Answer» C. Labour | |
| 235. |
The most important function of a washer is to provide bearing area and washers are normally specified by their hole diameters. The diameter of washer as compared to the nut is__________________? |
| A. | More |
| B. | Less |
| C. | Same |
| D. | More but less than the diameter of bolt |
| Answer» B. Less | |
| 236. |
The most important consideration, while designing the refrigeration system of an aircraft is that the refrigeration system_________________? |
| A. | Is as light as possible |
| B. | Has very high C.O.P. |
| C. | Employs minimum quantity of refrigerant |
| D. | Consumer minimum horse power |
| Answer» B. Has very high C.O.P. | |
| 237. |
The most important consideration in value engineering is the_____________________? |
| A. | Profit maximisation |
| B. | Customer satisfaction |
| C. | Cost reduction |
| D. | Process improvement |
| Answer» C. Cost reduction | |
| 238. |
The most economical channel section for the fluid flow is the one for which the discharge is maximum for a given cross-sectional area. Vertical velocity distribution in an open channel for laminar flow can be assumed to be_______________? |
| A. | Parabolic |
| B. | Hyperbolic |
| C. | Straight line |
| D. | None of these |
| Answer» B. Hyperbolic | |
| 239. |
The most detrimental impurity in high pressure boiler feed water is ___________________? |
| A. | Suspended salt |
| B. | Dissolved salt |
| C. | Silica |
| D. | Turbidity |
| Answer» D. Turbidity | |
| 240. |
The most abundant metal present in the earth’s crust is__________________? |
| A. | Iron |
| B. | Copper |
| C. | Titanium |
| D. | Aluminium |
| Answer» E. | |
| 241. |
The minimum temperature to which the water can be cooled in a cooling tower is the ______________ temperature of air? |
| A. | Ambient |
| B. | Dry bulb |
| C. | Dew point |
| D. | Wet bulb |
| Answer» D. Wet bulb | |
| 242. |
The minimum carbon content in steel should be ____________________ percent for it to respond to a hardening treatment ? |
| A. | 0.2 |
| B. | 0.4 |
| C. | 0.6 |
| D. | 0.8 |
| Answer» B. 0.4 | |
| 243. |
The minimum and the maximum number of members required to form a Private Limited Joint Stock Company are respectively __________________? |
| A. | 7 and 30 |
| B. | 10 and 50 |
| C. | 2 and 50 |
| D. | 13 and 55 |
| Answer» D. 13 and 55 | |
| 244. |
The mechanism which changes the value of manipulated variable in response to the output signal from the control unit is called the___________________? |
| A. | Final control element |
| B. | On-off control |
| C. | Floating control action |
| D. | None of these |
| Answer» B. On-off control | |
| 245. |
The mechanism involved in the removal of metal in drilling operation is by_________________? |
| A. | Compression |
| B. | Extrusion |
| C. | Shearing |
| D. | Both B & C |
| Answer» E. | |
| 246. |
The maximum thickness of the metal which can be welded using ultrasonic welding is _____________ mm ? |
| A. | 0.5 |
| B. | 3 |
| C. | 10 |
| D. | 25 |
| Answer» C. 10 | |
| 247. |
The maximum stress below which a material can withstand an infinite number of cycle of stress, is termed as the________________? |
| A. | Fatigue strength |
| B. | Creep strength |
| C. | Resilience |
| D. | Endurance limit |
| Answer» E. | |
| 248. |
The majority charge carriers in p-type silicon are______________________? |
| A. | Free electrons |
| B. | Ions |
| C. | Conduction electrons |
| D. | Holes |
| Answer» E. | |
| 249. |
The main constituent of bones is ______________________? |
| A. | CaF2 |
| B. | Ca3(PO4)2 |
| C. | CaCO3 |
| D. | CaCl2 |
| Answer» C. CaCO3 | |
| 250. |
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 | |