Chemical Process MCQs

Question 1

Commercially ethylene is produced from naphtha by

Accepted Answer

Hydrocracking

Answer

Catalytic cracking

Answer

Catalytic dehydrogenation

Answer

Pyrolysis

Question 2

How much temperature is maintained during quicklime manufacture in the calcination zone of the vertical shaft kiln?

Accepted Answer

1000°C

Answer

500°C

Answer

750°C

Answer

1500°C

Question 3

Pick out the wrong statement.

Accepted Answer

TNT is a hygroscopic explosive having very high melting point and is non-toxic to human being

Answer

Low intensity explosives are also called propellants, whereas high intensity explosive are called detonators

Answer

Gun powder comprises of 75% salt petre, 15% charcoal and 10% sulphur

Answer

Lead azide is a popular military explosive

Question 4

Neon gas is

Accepted Answer

Used in color discharge tube

Answer

Flammable in nature

Answer

Filled in lamps having tungsten filament

Answer

All of the above

Question 5

Neoprene is a

Accepted Answer

Synthetic rubber

Answer

Monomer

Answer

Polyester

Answer

None of these

Question 6

Neoprene is the trade name of

Accepted Answer

Polychloroprene

Answer

Polyurathane

Answer

Phenol formaldehyde

Answer

Styrene-butadiene rubber

Question 7

H2S is scrubbed from refinery gases by absorption using

Accepted Answer

Ethanol amine

Answer

Dilute H2SO4

Answer

Chilled water

Answer

Tri-butyl phosphate

Question 8

Ceramics are produced from silicates or clayish materials: Which of the following is not a ceramic material?

Accepted Answer

Teflon

Answer

Slag cement

Answer

Glasses

Answer

Porcelain/Potteries

Question 9

Widely used method for the conditioning of boiler feed water is the

Accepted Answer

Hot-lime soda process

Answer

Cold lime process

Answer

Coagulation

Answer

Sequestration