MCQOPTIONS
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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.
| 251. |
Fermenter used in the production of penicillin by deep fermentation process is a ______________ lined steel vessel ? |
| A. | Rubber |
| B. | Monel |
| C. | Glass |
| D. | Nickel |
| Answer» D. Nickel | |
| 252. |
Fatigue strength of a material increases by_____________________? |
| A. | Having notches in the specimen |
| B. | Rise in temperature |
| C. | Under stressing the specimen |
| D. | Having scratches on the surface |
| Answer» D. Having scratches on the surface | |
| 253. |
Fatigue failure of a material results from _____________ stress? |
| A. | Tensile |
| B. | Compressive |
| C. | Fluctuating |
| D. | None of these |
| Answer» D. None of these | |
| 254. |
Fatigue failure of a material may occur, when it is subjected to _____________ stress? |
| A. | Fluctuating |
| B. | Tensile |
| C. | Compressive |
| D. | Torsion |
| Answer» B. Tensile | |
| 255. |
Fatigue failure of a material results from ______________ stress? |
| A. | Tensile |
| B. | Compressive |
| C. | Fluctuating |
| D. | None of these |
| Answer» D. None of these | |
| 256. |
Failure of a material is termed as fatigue failure, if it fails below the yield point. The resistance to fatigue failure of a material is measured by the__________________? |
| A. | Ultimate tensile strength (U.T.S.) |
| B. | Endurance limit |
| C. | Elastic limit |
| D. | None of these |
| Answer» C. Elastic limit | |
| 257. |
Evaporators used in caustic soda recovery and production plant are made of_______________? |
| A. | Monel metal |
| B. | Gun metal |
| C. | Wood metal |
| D. | Babbitt metal |
| Answer» B. Gun metal | |
| 258. |
Evaporator used for concentrating tomato juice is made of __________________? |
| A. | Nickel |
| B. | Brass |
| C. | Stainless steel-glass lined |
| D. | Cast iron-rubber lined |
| Answer» D. Cast iron-rubber lined | |
| 259. |
Electronic structure of a material is generally studied by__________________? |
| A. | Metallurgical microscope |
| B. | Electron diffraction |
| C. | Spectroscopic techniques |
| D. | X-ray |
| Answer» D. X-ray | |
| 260. |
Duriron is__________________? |
| A. | Acid resistant, brittle and very hard |
| B. | High silicon iron |
| C. | Prone to breakage due to thermal expansion because of its very high co-efficient of thermal expansion |
| D. | All A., B. and C. |
| Answer» E. | |
| 261. |
Duralumin is an alloy of_________________? |
| A. | Aluminium, copper and manganese |
| B. | Aluminium, nickel and silicon |
| C. | Aluminium and nickel |
| D. | None of these |
| Answer» B. Aluminium, nickel and silicon | |
| 262. |
Dry chlorine can be handled in a vessel made of__________________? |
| A. | Iron or steel |
| B. | PVC |
| C. | Nickel |
| D. | Brass |
| Answer» B. PVC | |
| 263. |
_______________ does not contain tin as an alloying material? |
| A. | Brass |
| B. | Pewter |
| C. | Solder |
| D. | Babbitt metal |
| Answer» B. Pewter | |
| 264. |
__________________ does not contain copper as an alloying element? |
| A. | Nichrome |
| B. | Manganin |
| C. | Perminvar |
| D. | Monel metal |
| Answer» B. Manganin | |
| 265. |
Dip stick used for measuring the level of petro fuels (e.g. petrol, diesel, fuel oil etc.) in the storage tank is usually made of_________________? |
| A. | Brass |
| B. | Copper |
| C. | High carbon steel |
| D. | Aluminium |
| Answer» B. Copper | |
| 266. |
Dilute sulphuric acid is transported in _____________ pipes? |
| A. | Mild steel |
| B. | Lead |
| C. | Copper |
| D. | Special alloys |
| Answer» C. Copper | |
| 267. |
Dielectric strength of a material is____________________? |
| A. | Its energy storage capacity |
| B. | A magnetic property |
| C. | Its capacity to resist the flow of current |
| D. | Its capacity to withstand high voltage |
| Answer» E. | |
| 268. |
Diamagnetic materials are magnetised________________? |
| A. | Strongly |
| B. | Only slightly |
| C. | With eddy currents only |
| D. | In a direction opposite to that of the applied field |
| Answer» E. | |
| 269. |
Dead mild steel, which contains 0.10 to 0.15 percent carbon is used for making________________? |
| A. | Shafts |
| B. | Flanges |
| C. | Gears |
| D. | Shear blades |
| Answer» C. Gears | |
| 270. |
DDT is shipped in_________________? |
| A. | Stainless steel containers |
| B. | Paper bags |
| C. | Fibre drums |
| D. | Either B. or C. |
| Answer» E. | |
| 271. |
Creep is not exhibited at low temperature by _____________________? |
| A. | Rubber |
| B. | Acrylics |
| C. | Lead |
| D. | Plastics |
| Answer» D. Plastics | |
| 272. |
Corrosion resisting properties of cast iron are significantly improved by the addition of 12 – 15% of___________________? |
| A. | Tungsten |
| B. | Vanadium |
| C. | Silicon |
| D. | All A., B. & C. |
| Answer» D. All A., B. & C. | |
| 273. |
Corrosion resistance of steel is increased by the addition of_________________? |
| A. | Phosphorous and tungsten |
| B. | Nickel and chromium |
| C. | Lead and vanadium |
| D. | Molybdenum and tungsten |
| Answer» C. Lead and vanadium | |
| 274. |
Corrosion involves exchange of electrons in ____________ corrosion? |
| A. | Chemical |
| B. | Electrochemical |
| C. | Both A. & B. |
| D. | Neither A. nor B. |
| Answer» D. Neither A. nor B. | |
| 275. |
Copper is dissolved from its ore by H2SO4 in a percolation tank made of_________________? |
| A. | Wood |
| B. | Stainless steel |
| C. | Reinforced concrete lined with lead |
| D. | High silicon iron (14% Si) |
| Answer» D. High silicon iron (14% Si) | |
| 276. |
Copper has very low________________? |
| A. | Malleability |
| B. | Ductility |
| C. | Tensile strength |
| D. | Thermal & electrical conductivity |
| Answer» D. Thermal & electrical conductivity | |
| 277. |
Containers made of high silicon cast iron (14% Si) are not suitable for the storage of ____________________? |
| A. | Acetic acid |
| B. | Benzoic & boric acids |
| C. | Phosphoric acid (95%) & sulphuric acid (95%) |
| D. | Hydrochloric acid (concentrated) |
| Answer» E. | |
| 278. |
Constituents of stellite are__________________? |
| A. | Zinc, copper and nickel |
| B. | Cobalt, chromium and tungsten |
| C. | Zinc, aluminium and nickel |
| D. | Nickel, cobalt and vanadium |
| Answer» C. Zinc, aluminium and nickel | |
| 279. |
Constantan used in thermocouples is an alloy of___________________? |
| A. | Iron & copper |
| B. | Copper & aluminium |
| C. | Lead & tin |
| D. | None of these |
| Answer» E. | |
| 280. |
Constantan is an alloy of____________________? |
| A. | Cu (55%) & Sn (45%) |
| B. | Cu (55%) & Ni (45%) |
| C. | Pt (95%) & Rh (10%) |
| D. | Fe (80%) & Ni (20%) |
| Answer» C. Pt (95%) & Rh (10%) | |
| 281. |
Condenser tubes are not made of_________________? |
| A. | Cartridge brass |
| B. | Muntz brass |
| C. | Wood metal |
| D. | Aluminium brass alloy |
| Answer» D. Aluminium brass alloy | |
| 282. |
Concrete tank can be used to store________________? |
| A. | Alum |
| B. | Ferrous sulphate |
| C. | Sulphuric acid |
| D. | Saturated brine |
| Answer» E. | |
| 283. |
Concentrated HCl at 30°C can be stored in a vessel made of ________________________? |
| A. | PTFE and porcelain |
| B. | Cast iron and aluminium |
| C. | Stainless steel and high silicon cast iron |
| D. | None of these |
| Answer» B. Cast iron and aluminium | |
| 284. |
Compressive strength of wood is usually more along the grains. The tenile strength of wood as compared to that of steel is about_______________? |
| A. | Half |
| B. | One third |
| C. | One fifth |
| D. | One twelfth |
| Answer» D. One twelfth | |
| 285. |
Common house hold glass (i.e., soda-lime glass) is a/an _____________ material? |
| A. | Fully crystalline |
| B. | Partly crystalline |
| C. | Amorphous |
| D. | None of these |
| Answer» C. Amorphous | |
| 286. |
Combination of metals and ceramics are called___________________? |
| A. | Metalloy |
| B. | Cermets |
| C. | Pellets |
| D. | Non-crystalline ceramics |
| Answer» C. Pellets | |
| 287. |
Cold worked steel parts are normally subjected to_________________? |
| A. | Normalising |
| B. | Hardening |
| C. | Annealing |
| D. | Shot peening |
| Answer» D. Shot peening | |
| 288. |
Cold work tool steel should have_________________? |
| A. | High toughness |
| B. | Poor hardenability |
| C. | High wear resistance |
| D. | All A., B. & C. |
| Answer» D. All A., B. & C. | |
| 289. |
Coke oven walls are lined with _____________ bricks? |
| A. | Silica |
| B. | Tar-dolomite |
| C. | Low thermal conductivity |
| D. | Fire clay |
| Answer» B. Tar-dolomite | |
| 290. |
Coke oven regenerators are made of ______________ bricks? |
| A. | Fire clay |
| B. | Silica |
| C. | Low thermal conductivity |
| D. | High electrical conductivity |
| Answer» B. Silica | |
| 291. |
Clock pendulums are usually made of _______________ steel? |
| A. | High speed |
| B. | Stainless |
| C. | Heat resisting |
| D. | None of these |
| Answer» E. | |
| 292. |
Chromel (Nichrome) is an alloy of_____________________? |
| A. | Chromium and molybdenum |
| B. | Nickel and chromium |
| C. | Molybdenum and nickel |
| D. | Chromium and aluminium |
| Answer» C. Molybdenum and nickel | |
| 293. |
Chrome vanadium steels usually contain 0.8 to 1.1% Cr, 0.25 to 0.35% C and < 0.25% V. It is ______________________? |
| A. | Used for making axle & shafts of aeroplanes, automobiles and locomotives |
| B. | Having poor fatigue resistance |
| C. | Having poor toughness |
| D. | Not helpful in producing cleaner steel due to oxidising action of vanadium |
| Answer» B. Having poor fatigue resistance | |
| 294. |
Chlorination of benzene is done to produce benzene hexachloride (a pesticide) in a photochemical reactor lined with_____________________? |
| A. | Karbate |
| B. | Lead or glass |
| C. | Fireclay bricks |
| D. | PVC |
| Answer» C. Fireclay bricks | |
| 295. |
Chilled iron castings are__________________? |
| A. | Easily machinable |
| B. | Soft on surface |
| C. | Highly wear resistant |
| D. | None of these |
| Answer» D. None of these | |
| 296. |
Cermets are used for making___________________? |
| A. | Cutting tools |
| B. | Abrasives |
| C. | Both A. & B. |
| D. | Neither A. nor B |
| Answer» D. Neither A. nor B | |
| 297. |
Cermets are ______________ materials? |
| A. | Refractory |
| B. | Reinforced |
| C. | Abrasive |
| D. | Fully metallic |
| Answer» B. Reinforced | |
| 298. |
Ceramic recuperators are generally made of_________________? |
| A. | Silicon carbide |
| B. | Calcium carbide |
| C. | Fireclay bricks |
| D. | High alumina bricks |
| Answer» B. Calcium carbide | |
| 299. |
Ceramic materials__________________? |
| A. | Are exemplified by clay and mica |
| B. | Are poor electrical conductors due to lack of free electrons |
| C. | Never exhibit polymorphism |
| D. | All A., B. and C. |
| Answer» E. | |
| 300. |
Ceramic materials fabrication cannot be done by__________________? |
| A. | Welding |
| B. | Slip casting |
| C. | Extrusion |
| D. | Plastic pressing |
| Answer» B. Slip casting | |