Chemical Process MCQs Archives

311. Shaving soaps are

Soft potassium soaps (potassium salt of fatty acid) with free stearic acid to give lather a lasting property

Metalic soaps compounded with frothing agents

High free alkali soaps having excess of cane sugar and alcohol

None of these

✅ The correct answer is option A.

312. Which of the following is the most adverse factor challenging the choice of mercury electrolytic cell process for the production of caustic soda?

High cost of mercury

High specific gravity of mercury

Non-availability of high purity mercury

Pollution of water stream by mercury

✅ The correct answer is option D.

313. Isopropyl benzene produced by alkylation of benzene with propylene is known as

Neoprene

Cumene

Gelatin

Mercaptans

✅ The correct answer is option B.

314. Main constituents of natural rubber is

Polystyrene

Polyisoprene

Polybutadiene

Polychloroprene

✅ The correct answer is option B.

315. At very high concentration of enzymes, the rate of fermentation chemical reaction is __________ the concentration of reactants.

Independent of

Directly proportional to

Inversely proportional to

Proportional to the square of

✅ The correct answer is option A.

316. The most stable allotropic form of phosphorous is the __________ phosphorous.

White

Black

Yellow

Red

✅ The correct answer is option B.

317. Dry ice (solidified CO₂) is used for the

Storage & shipment of frozen foods and ice-creams

Liquefaction of permanent gases

Liquefaction of natural gas

None of these

✅ The correct answer is option A.

318. Terylene is

Same as dacron

A polyester

Both A & B

Neither A nor B

✅ The correct answer is option C.

319. Conversion of SO₂ to SO₃ in Monsanto 4-pass converter is about __________ percent.

100

✅ The correct answer is option C.

320. Which of the following is an yellow pigment?

Titanium dioxide

Ferrous sulphate

Lead chromates

Zinc sulphides

✅ The correct answer is option C.