chemical engineering MCQs – Page 73

Practise multiple-choice questions from chemical engineering for competitive examinations and subject revision. Review each marked answer and report any item that may be outdated or unclear.

chemical engineering Mcqs
1441. Nitrogen is an essential component of ____________________?
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A. Carbohydrates

B. Proteins

C. Mineral salts

D. Fats

1442. Function of sodium thiosulphate (hypo) in development of photographic film/plate is to______________?
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A. Convert silver chloride to silver

B. Brighten the faint images

C. Remove unexposed silver halide

D. Remove metallic silver

1443. Coagulant is used _________________ filtration?
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A. After

B. To avoid

C. During

D. Before
1444. Pick out the correct statement ?
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A. Scrap value is the net amount of money obtainable from the sale of used property over and

B. ve any charges involved in its removal & sale

C. estment

D. Difference between income and expense is termed as gross revenue

E. Unamortised cost is the difference between the original cost of a property and all the

F. reciation charges made to date</strong>

1445. Coke used for the production of calcium carbide should have____________________?
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A. Low ignition temperature

B. Low ash content

C. All A , B. and C.

D. High electrical resistivity

1446. Highly porous refractory bricks are ____________________?
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A. None of these

B. Very strong

C. Less susceptible to chemical attack by molten fluxes and gases etc

D. Having very high thermal conductivity

1447. Fats as compared to oils have ___________________?
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A. Much higher reactivity to oxygen

B. More unsaturated glycerides of fatty acids

C. Lower melting point

D. Less unsaturated glycerides of fatty acids
1448. Low purity oxygen is used for____________________?
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A. L.D. steel making

B. Cutting and welding of metals

C. Chemical oxidation processes

D. Medicinal purposes

1449. CaO is called__________________?
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A. Calcite

B. Limestone

C. Slaked lime

D. Quick lime
1450. Which form of sulphur is the most stable at room temperature ?
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A. Monoclinic

B. Flowers of sulphur

C. Plastic

D. Rhombic
1451. Main constituents of natural rubber is____________________?
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A. Polychlorophrene

B. Polystyrene

C. Polyisoprene

D. Polybutadiene

1452. Commercial production of calcium carbide requires limestone and __________________ as raw materials?
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A. Fuel oil

B. Soda ash

C. Sand

D. Coke

1453. The temperature in the calcium carbide furnace is _______________ C ?
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A. 700-850

B. 200-300

C. 2000-2200

D. 4000-4500

1454. Litharge is________________?
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A. Zinc oxide

B. Lead oxide

C. Cellulosic photographic material

D. Zinc sulphide

1455. Concentration of sulphide ores is done usually by____________________?
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A. Roasting

B. Froth floatation

C. Smelting

D. Electromagnetic separation

1456. Platinum is a versatile catalyst for many processes in chemical industries. It is highly prone to be poisoned by the presence of_________________?
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A. Carbon

B. Lead

C. Arsenic

D. Sulphur

1457. Which oil is preferred for paint manufacture ?
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A. Drying oil

B. Non-drying oil

C. Semi-drying oil

1458. Vegetable oils contain large quantity of glycerides of unsaturated acids. When the vegetable oils contain high amount of saturated fatty acids, it is termed as ____________________ oil?
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A. Non-drying

B. None of these

C. Semi-drying

D. Drying

1459. A unit process is exemplified by the___________________?
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A. Hydrogenation of oils

B. Humidification

C. Absorption

D. Distillation

1460. Sulphuric acid solution having a specific gravity of 1.20 at room temperature is used mainly for the_______________?
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A. Synthesis of oleum

B. Car battery solution

C. Water treatment

D. Fertiliser manufacture