MCQOPTIONS
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MCQOPTIONS
This section includes 1037 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. |
*/*_Work hardening of a material? |
| A. | Decreases its tensile strength |
| B. | Decreases its ductility |
| C. | Increases its ductility |
| D. | Does not affect its ductility |
| Answer» C. Increases its ductility | |
| 252. |
*/*_Acetylene gas holder is made of? |
| A. | Copper |
| B. | Cast iron |
| C. | Steel |
| D. | Monel metal |
| Answer» D. Monel metal | |
| 253. |
*/*___________ is never shipped in glass carboys.? |
| A. | Ammonia |
| B. | Acetic acid |
| C. | Phenol |
| D. | Formaldehyde |
| Answer» B. Acetic acid | |
| 254. |
*/*_Visco-elastic behaviour of materials which is time dependent is common in? |
| A. | Plastics |
| B. | Crystalline solid |
| C. | Non-crystalline solids |
| D. | Non-crystalline organic polymer |
| Answer» E. | |
| 255. |
*/*_For storing water and acid free benzol, use a __________ vessel.? |
| A. | Steel |
| B. | Karbate |
| C. | Stainless steel |
| D. | None of these |
| Answer» B. Karbate | |
| 256. |
*/*_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 | |
| 257. |
*/*_In hot wire aneomometer used for gas flow measurement, the wire is normally made of? |
| A. | Copper |
| B. | Platinum |
| C. | Constantan |
| D. | Chromium |
| Answer» C. Constantan | |
| 258. |
*/*_Rotary driers are generally made of? |
| A. | Cast iron |
| B. | Mild steel |
| C. | High silicon iron (14% Si) |
| D. | Tin lined with refractory bricks |
| Answer» C. High silicon iron (14% Si) | |
| 259. |
*/*_Gunmetal and bronze are not corroded by the action of? |
| A. | Wet chlorine |
| B. | Synthetic detergent solution |
| C. | Hydrochloric acid (10%) |
| D. | Nitric acid (< 25%) |
| Answer» C. Hydrochloric acid (10%) | |
| 260. |
*/*_Babbit metal (used for making bearings) comprises of? |
| A. | Mainly tin (85%) and lead |
| B. | Saw dust and iron dust mixture |
| C. | Zinc and aluminium |
| D. | Copper and aluminium |
| Answer» B. Saw dust and iron dust mixture | |
| 261. |
*/*_Brinell Hardness Number (BHN) for talc is approximately in the range of? |
| A. | 1-5 |
| B. | 20-30 |
| C. | 100 -150 |
| D. | 200 - 250 |
| Answer» C. 100 -150 | |
| 262. |
*/*_The material of construction of pressure mills used for squeezing out the juice from sugar cane is? |
| A. | Stainless steel |
| B. | Cast iron |
| C. | Mild steel |
| D. | Monel |
| Answer» C. Mild steel | |
| 263. |
*/*_A suitable material of construction to use with fuming sulphuric acid is? |
| A. | Carbon steel |
| B. | Stainless steel type 304 |
| C. | Nickel |
| D. | Monel |
| Answer» E. | |
| 264. |
*/*_Sulphuric acid pickling tanks are lined with? |
| A. | Nickel |
| B. | Rubber |
| C. | Aluminium |
| D. | Glass |
| Answer» C. Aluminium | |
| 265. |
*/*_Which of the following is the most widely used insulating material for steam carray-ing pipelines?? |
| A. | Ceramic fibre blanket |
| B. | Glass wool and 85% magnesia |
| C. | Vermiculite |
| D. | Slag wool |
| Answer» C. Vermiculite | |
| 266. |
*/*___________ is a donor impurity for semi-conductors.? |
| A. | Boron |
| B. | Antimony |
| C. | Gallium |
| D. | None of these |
| Answer» C. Gallium | |
| 267. |
*/*_Dies for wire drawing are generally made of? |
| A. | Mild steel |
| B. | Stainless steel |
| C. | Carbides |
| D. | High carbon steel |
| Answer» D. High carbon steel | |
| 268. |
*/*_A bearing metal should not have? |
| A. | Enough plasticity |
| B. | Low thermal conductivity |
| C. | Low co-efficient of friction |
| D. | High toughness |
| Answer» C. Low co-efficient of friction | |
| 269. |
%___________ can replace tungsten in high speed steel,_% |
| A. | Chromium |
| B. | Vanadium |
| C. | Cobalt |
| D. | Molybdenum |
| Answer» E. | |
| 270. |
%___________ 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 | |
| 271. |
%_For storing water and acid free benzol, use a __________ vessel._% |
| A. | Steel |
| B. | Karbate |
| C. | Stainless steel |
| D. | None of these |
| Answer» B. Karbate | |
| 272. |
%_Visco-elastic behaviour of materials which is time dependent is common in_% |
| A. | Plastics |
| B. | Crystalline solid |
| C. | Non-crystalline solids |
| D. | Non-crystalline organic polymer |
| Answer» E. | |
| 273. |
%___________ is never shipped in glass carboys._% |
| A. | Ammonia |
| B. | Acetic acid |
| C. | Phenol |
| D. | Formaldehyde |
| Answer» B. Acetic acid | |
| 274. |
%_In hot wire aneomometer used for gas flow measurement, the wire is normally made of_% |
| A. | Copper |
| B. | Platinum |
| C. | Constantan |
| D. | Chromium |
| Answer» C. Constantan | |
| 275. |
%_Acetylene gas holder is made of_% |
| A. | Copper |
| B. | Cast iron |
| C. | Steel |
| D. | Monel metal |
| Answer» D. Monel metal | |
| 276. |
%_Work hardening of a material_% |
| A. | Decreases its tensile strength |
| B. | Decreases its ductility |
| C. | Increases its ductility |
| D. | Does not affect its ductility |
| Answer» C. Increases its ductility | |
| 277. |
%_Acetaldehyde is shipped in __________ drums._% |
| A. | Cast iron |
| B. | Steel |
| C. | Aluminium |
| D. | Either B & C |
| Answer» E. | |
| 278. |
%_Brinell Hardness Number (BHN) for talc is approximately in the range of_% |
| A. | 1-5 |
| B. | 20-30 |
| C. | 100 -150 |
| D. | 200 - 250 |
| Answer» C. 100 -150 | |
| 279. |
%_A bearing metal should not have_% |
| A. | Enough plasticity |
| B. | Low thermal conductivity |
| C. | Low co-efficient of friction |
| D. | High toughness |
| Answer» C. Low co-efficient of friction | |
| 280. |
%___________ is a donor impurity for semi-conductors._% |
| A. | Boron |
| B. | Antimony |
| C. | Gallium |
| D. | None of these |
| Answer» C. Gallium | |
| 281. |
%_Dies for wire drawing are generally made of_% |
| A. | Mild steel |
| B. | Stainless steel |
| C. | Carbides |
| D. | High carbon steel |
| Answer» D. High carbon steel | |
| 282. |
%_Babbit metal (used for making bearings) comprises of_% |
| A. | Mainly tin (85%) and lead |
| B. | Saw dust and iron dust mixture |
| C. | Zinc and aluminium |
| D. | Copper and aluminium |
| Answer» B. Saw dust and iron dust mixture | |
| 283. |
%_Gunmetal and bronze are not corroded by the action of_% |
| A. | Wet chlorine |
| B. | Synthetic detergent solution |
| C. | Hydrochloric acid (10%) |
| D. | Nitric acid (< 25%) |
| Answer» C. Hydrochloric acid (10%) | |
| 284. |
%_Sulphuric acid pickling tanks are lined with_% |
| A. | Nickel |
| B. | Rubber |
| C. | Aluminium |
| D. | Glass |
| Answer» C. Aluminium | |
| 285. |
%_Which of the following is the most widely used insulating material for steam carray-ing pipelines?_% |
| A. | Ceramic fibre blanket |
| B. | Glass wool and 85% magnesia |
| C. | Vermiculite |
| D. | Slag wool |
| Answer» C. Vermiculite | |
| 286. |
%_The material of construction of pressure mills used for squeezing out the juice from sugar cane is_% |
| A. | Stainless steel |
| B. | Cast iron |
| C. | Mild steel |
| D. | Monel |
| Answer» C. Mild steel | |
| 287. |
%_A suitable material of construction to use with fuming sulphuric acid is_% |
| A. | Carbon steel |
| B. | Stainless steel type 304 |
| C. | Nickel |
| D. | Monel |
| Answer» E. | |
| 288. |
%_Amount of energy that a material can absorb before its fracture is a measure of its_% |
| A. | Toughness |
| B. | Resilience |
| C. | Malleability |
| D. | Ductility |
| Answer» B. Resilience | |
| 289. |
%_Hardest material so far found is_% |
| A. | Diamond |
| B. | Graphite |
| C. | Carborundum |
| D. | Pumice stone |
| Answer» B. Graphite | |
| 290. |
%_An elastic behaviour of materials is expressed in terms of_% |
| A. | Hysterisis loop area |
| B. | Stress-strain curve |
| C. | Relaxation time |
| D. | None of these |
| Answer» D. None of these | |
| 291. |
%_Addition of __________ in steel can help in increasing the depth of hardness._% |
| A. | Nickel |
| B. | Chromium |
| C. | Vanadium |
| D. | Tungsten |
| Answer» E. | |
| 292. |
%_Rotary driers are generally made of_% |
| A. | Cast iron |
| B. | Mild steel |
| C. | High silicon iron (14% Si) |
| D. | Tin lined with refractory bricks |
| Answer» C. High silicon iron (14% Si) | |
| 293. |
%_Tin coating is not done by_% |
| A. | Vaporising |
| B. | Hot dipping |
| C. | Electro deposition |
| D. | Spraying |
| Answer» B. Hot dipping | |
| 294. |
%___________ alloys have the highest specific strength of all the structural materials out of the following._% |
| A. | Magnetic steel |
| B. | Titanium |
| C. | Chromium |
| D. | Magnesium |
| Answer» C. Chromium | |
| 295. |
%_Thermoplastic resins are those polymers, which_% |
| A. | Has decreased plasticity at increasing temperature |
| B. | Can not be moulded |
| C. | Easily deform under pressure at high temperature |
| D. | None of these |
| Answer» D. None of these | |
| 296. |
%_Glass lined vessels are not used for handling_% |
| A. | Dilute HNO‚ÇÉ |
| B. | Dilute HNO‚ÇÉ |
| C. | Dilute HCI |
| D. | Hydroflouric acid |
| Answer» E. | |
| 297. |
%_Brass tubes are used in the manufacture of tubes of evaporators used in sugar and salt industries, mainly because of its_% |
| A. | High co-efficient of thermal expansion |
| B. | Low thermal conductivity |
| C. | High corrosion resistance |
| D. | All of the above |
| Answer» D. All of the above | |
| 298. |
%_Out of the following, copper vessels are the most suitable for the storage of_% |
| A. | Bromine |
| B. | Dry chlorine & dry fluorine |
| C. | Nitric acid (95% and fuming) |
| D. | Phosphoric acid (95%) & sulphuric acid (95% and fuming) |
| Answer» C. Nitric acid (95% and fuming) | |
| 299. |
%___________ is added in low carbon steel to raise its yield point._% |
| A. | Sulphur |
| B. | Phosphorous |
| C. | Silicon |
| D. | Manganese |
| Answer» E. | |
| 300. |
%_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. | |