MCQOPTIONS
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MCQOPTIONS
This section includes 595 Mcqs, each offering curated multiple-choice questions to sharpen your Chemical Engineering knowledge and support exam preparation. Choose a topic below to get started.
| 351. |
Chemical name of Grignard reagent is |
| A. | sodium thiosulphate. |
| B. | ethyl magnesium chloride. |
| C. | sodium sulphite. |
| D. | sodium bicarbonate. |
| Answer» C. sodium sulphite. | |
| 352. |
Synthesis gas is a mixture of |
| A. | CO and H2 |
| B. | N2 and H2 |
| C. | H2, CH4 and CO |
| D. | CO2 and H2 |
| Answer» B. N2 and H2 | |
| 353. |
In Kraft process of paper manufacture, white cooking liquor consists of caustic soda |
| A. | sodium sulphide & sodium carbonate. |
| B. | sodium sulphite & sodium carbonate. |
| C. | sodium sulphite & sodium sulphide. |
| D. | none of these. |
| Answer» B. sodium sulphite & sodium carbonate. | |
| 354. |
The most popular and common detergent i.e., alkyl benzene sulfonate (ABS) is a/an __________ detergent. |
| A. | cationic |
| B. | anionic |
| C. | amphoteric |
| D. | semi polar |
| Answer» C. amphoteric | |
| 355. |
Calcareous & argillaceous materials are used in the manufacture of |
| A. | lead |
| B. | cement |
| C. | carbon disulphide |
| D. | none of these |
| Answer» C. carbon disulphide | |
| 356. |
Pick out the exothermic reaction out of the following: |
| A. | C + H2O = CO + H2 |
| B. | CaC2 + H2O = Ca(OH)2 + C2H2 |
| C. | MgCO3 = MgO + CO2 |
| D. | all (a), (b) and (c) |
| Answer» C. MgCO3 = MgO + CO2 | |
| 357. |
Conversion of SO2 to SO3 in Monsanto 4-pass converter is about __________ percent. |
| A. | 80 |
| B. | 90 |
| C. | 98 |
| D. | 100 |
| Answer» D. 100 | |
| 358. |
Bakelite is |
| A. | same as poly tetrafluoroethylene (PTFE). |
| B. | an inorganic polymer. |
| C. | same as thermosetting phenol-formaldehyde. |
| D. | not a polymer. |
| Answer» D. not a polymer. | |
| 359. |
The type of high refractive index glass used in optical instruments is __________ glass. |
| A. | pyrex |
| B. | flint |
| C. | crookes |
| D. | none of these |
| Answer» C. crookes | |
| 360. |
Liquor poisoning generally occurs due to the presence of __________ in it. |
| A. | ethyl alcohol |
| B. | impurities |
| C. | methyl alcohol |
| D. | carbonic acid |
| Answer» D. carbonic acid | |
| 361. |
Nitroglycerene absorbed in wood flour, sodium nitrate or ammonium nitrate is commercially used as a controlled explosive called dynamite. The raw material used for its manufacture are glycerene, nitric acid and |
| A. | sulphuric acid |
| B. | phosphoric acid |
| C. | hydrochloric acid |
| D. | hydroflouric acid |
| Answer» B. phosphoric acid | |
| 362. |
Bitterns is a/an |
| A. | unsaturated fat. |
| B. | starting material for the production of iodine. |
| C. | by-product of chlor-alkali industry. |
| D. | none of these. |
| Answer» E. | |
| 363. |
Iron ore hametite is concentrated using |
| A. | electro magnetic separation mainly. |
| B. | gravity separation. |
| C. | froth floatation. |
| D. | roasting. |
| Answer» C. froth floatation. | |
| 364. |
Commercial scale production of hydrogen from iron-steam reaction represented by, 3Fe + 3H2O = Fe3O4 + 4H2, is not practised, as it is |
| A. | a slow reaction. |
| B. | a discontinuous reaction (requiring regeneration of iron by water gas intermittently). |
| C. | still in development stage (by employing fluidised bed technique). |
| D. | all (a), (b) and (c). |
| Answer» E. | |
| 365. |
Riboflavin is a/an |
| A. | vitamin |
| B. | analgesic drug |
| C. | anaesthetics |
| D. | anti-malarial drug |
| Answer» B. analgesic drug | |
| 366. |
Starting material for the production of butadiene in India is |
| A. | naphthalene |
| B. | benzol |
| C. | ethyl alcohol |
| D. | phthalic anhydride |
| Answer» D. phthalic anhydride | |
| 367. |
Deaeration of water in its treatment is necessary, as it |
| A. | minimises its turbidity. |
| B. | helps in controlling its taste and odour. |
| C. | minimises its corrosiveness. |
| D. | none of these. |
| Answer» D. none of these. | |
| 368. |
The terminology 'BTX' used in coal tar distillation industry refers to |
| A. | benzol-toluol-xylol. |
| B. | benzol-toluene-xylene. |
| C. | benzene-toluol-xylol. |
| D. | benzene-toluene-xylene. |
| Answer» E. | |
| 369. |
Basic oxide is absent in __________ glass. |
| A. | flint |
| B. | pyrex |
| C. | quartz |
| D. | all (a), (b) & (c) |
| Answer» D. all (a), (b) & (c) | |
| 370. |
Sulphuric acid solution having a specific gravity of 1.20 at room temperature is used mainly for the |
| A. | fertiliser manufacture |
| B. | car battery solution |
| C. | synthesis of oleum |
| D. | water treatment |
| Answer» C. synthesis of oleum | |
| 371. |
Sucrose content in cane sugar may be around __________ percent. |
| A. | 50 |
| B. | 70 |
| C. | 80 |
| D. | 95 |
| Answer» E. | |
| 372. |
Polymerisation product of C2F4 (carbon tetraflouride) is called P.T.F.E (poly chloro tetra flouro ethylene). It is also called |
| A. | polyurethane |
| B. | silicone |
| C. | teflon |
| D. | epoxy resin |
| Answer» D. epoxy resin | |
| 373. |
Type of glass used in optical work is the __________ glass. |
| A. | soda-lime |
| B. | fibre |
| C. | lead |
| D. | borosilicate |
| Answer» D. borosilicate | |
| 374. |
Purity of oxygen used for blowing in steel making L.D. converter is 99.5%. The boiling point of oxygen is about __________ °C.$ |
| A. | -53 |
| B. | -103 |
| C. | -183 |
| D. | -196 |
| Answer» D. -196 | |
| 375. |
Gypsum is chemically |
| A. | calcium chloride |
| B. | potassium sulphate |
| C. | sodium sulphate |
| D. | calcium sulphate |
| Answer» E. | |
| 376. |
Sulphuric acid saturated with SO3 is called |
| A. | concentrated H2SO4. |
| B. | sulphurous acid. |
| C. | oleum. |
| D. | none of these. |
| Answer» D. none of these. | |
| 377. |
Washing of coal is done to |
| A. | remove the inherent impurities. |
| B. | remove the adhering impurities. |
| C. | reduce the ash content. |
| D. | both(b) and (c). |
| Answer» E. | |
| 378. |
Zeolite is used in the |
| A. | water treatment. |
| B. | glass manufacture. |
| C. | hydrogenation of fatty oil as a catalyst. |
| D. | development of exposed photographic plate. |
| Answer» B. glass manufacture. | |
| 379. |
Double Contact Double Absorption (DCDA) process is the most recent process for the manufacture of |
| A. | nitric acid |
| B. | sulphuric acid |
| C. | ammonium sulphate |
| D. | hydrochloric acid |
| Answer» C. ammonium sulphate | |
| 380. |
The end bleaching agent used to move last traces of colour bodies from the pulp is |
| A. | chlorine dioxide (ClO2) |
| B. | MgO |
| C. | SO2 gas |
| D. | mercaptans |
| Answer» B. MgO | |
| 381. |
Percentage of glycerene present in the spent lye obtained during soap manufacture is about |
| A. | 0.5 |
| B. | 5 |
| C. | 20 |
| D. | 35 |
| Answer» C. 20 | |
| 382. |
Which of the following is a co-product during the manufacture of caustic soda by electrolysis of brine ? |
| A. | Na2CO3 |
| B. | NaHCO3 |
| C. | H2 |
| D. | none of these |
| Answer» D. none of these | |
| 383. |
Detergent is produced by the sulphonation of dodecyl benzene, which is an __________ reaction. |
| A. | endothermic |
| B. | exothermic |
| C. | irreversible |
| D. | both (b) and (c) |
| Answer» E. | |
| 384. |
Very dilute solutions are generally used in fermentation reactions for which the optimum temperature range is __________ °C.$ |
| A. | -5 to 0 |
| B. | 5 to 10 |
| C. | 30 to 50 |
| D. | 75 to 80 |
| Answer» D. 75 to 80 | |
| 385. |
The process involved in converting rubber into a thin sheet or coating it on fabric is called |
| A. | extrusion |
| B. | mastication |
| C. | calendering |
| D. | valcanisation |
| Answer» D. valcanisation | |
| 386. |
Graphite is a/an |
| A. | electrical insulator. |
| B. | allotrope of carbon. |
| C. | moderator used in nuclear reactor. |
| D. | both (b) and (c). |
| Answer» E. | |
| 387. |
The process used for the manufacture of ethyl alcohol from molasses is |
| A. | distillation |
| B. | dehydration |
| C. | dehydrogenation |
| D. | none of these |
| Answer» E. | |
| 388. |
The main use of HCl is in the |
| A. | drilling of petroleum wells and pickling of steel sheets. |
| B. | manufacture of cationic detergent. |
| C. | treatment of spent fuel of nuclear reactor. |
| D. | none of these. |
| Answer» B. manufacture of cationic detergent. | |
| 389. |
Chalcopyrite is the main ore of |
| A. | copper |
| B. | lead |
| C. | tin |
| D. | iron |
| Answer» B. lead | |
| 390. |
Glauber's salt is chemically represented by |
| A. | Na2SO4.10H2O |
| B. | CaCl(OCl) |
| C. | CaSO4.H2O |
| D. | (NH4)2SO4 |
| Answer» B. CaCl(OCl) | |
| 391. |
Cooking liquor in case of sulphite process is |
| A. | sodium sulphite and sodium bisulphite. |
| B. | magnesium sulphite and free SO2 in acid medium. |
| C. | magnesium sulphate and magnessium bicarbonate. |
| D. | none of these. |
| Answer» B. magnesium sulphite and free SO2 in acid medium. | |
| 392. |
Chemical name of aspirin (an analgesic drug) is |
| A. | acetylsalicylic acid |
| B. | nictonic acid |
| C. | calcium acetate |
| D. | methyl salicylate |
| Answer» B. nictonic acid | |
| 393. |
Phosphoric acid is prepared from |
| A. | cryolite |
| B. | chalcopyrite |
| C. | rock phosphate |
| D. | none of these |
| Answer» D. none of these | |
| 394. |
Which form of sulphur is the most stable at room temperature ? |
| A. | Plastic |
| B. | Monoclinic |
| C. | Rhombic |
| D. | Flowers of sulphur |
| Answer» D. Flowers of sulphur | |
| 395. |
Thermosetting materials |
| A. | are cross-linked molecules. |
| B. | soften on application of heat. |
| C. | are solvent soluble. |
| D. | none of these. |
| Answer» B. soften on application of heat. | |
| 396. |
Pig iron is produced by blast furnaces in India using mostly the iron ore named |
| A. | hematite |
| B. | magnetite |
| C. | siderite |
| D. | chalcopyrite |
| Answer» B. magnetite | |
| 397. |
Carbon disulphide is mainly used in the production of |
| A. | viscose rayon. |
| B. | corundum. |
| C. | plasticiser for unsaturated polyester. |
| D. | paints. |
| Answer» B. corundum. | |
| 398. |
Which of the following processes can remove both temporary as well as permanent hardness of water ? |
| A. | Filtration |
| B. | Boiling |
| C. | Distillation |
| D. | None of these |
| Answer» D. None of these | |
| 399. |
Hard water |
| A. | does not affect the lather formation by soap. |
| B. | is not unfit for drinking purpose. |
| C. | pollutes the water stream. |
| D. | all (a), (b) and (c). |
| Answer» C. pollutes the water stream. | |
| 400. |
__________ is used as a flux in the smelting of copper ore like chalcopyrite. |
| A. | Coke breeze |
| B. | Lime powder |
| C. | Silica/quartz |
| D. | Dolomite |
| Answer» D. Dolomite | |