Chemical Engineering Basics MCQs

Question 1

__________ is a special constituent of chlorophyll without which photosynthesis is not possible.

Accepted Answer

Nitrogen

Answer

Calcium

Answer

Phosphorous

Answer

Hydrogen

Question 2

Air intake for an air compressor should be preferably taken from

Accepted Answer

An outside atmosphere at 10°C

Answer

A site, where cooling towers are located nearby

Answer

A site, where open coal yard in located nearby

Answer

An air conditioned room maintained at a temperature of 18°C

Question 3

Out of the following, the best material capable of withstanding shock & vibration without the danger of cracking is

Accepted Answer

Malleable iron

Answer

Grey cast iron

Answer

Chilled cast iron

Answer

White cast iron

Question 4

Out of the following, the best material capable of withstanding shock & vibration without the danger of cracking is

Accepted Answer

Malleable iron

Answer

Grey cast iron

Answer

Chilled cast iron

Answer

White cast iron

Question 5

Which of the following varies as the square root of oil pressure during atomisation of fuel oil through a pressure jet burner?

Accepted Answer

Both A & B

Answer

Output & fineness

Answer

Velocity

Answer

None of these

Question 6

Satellites burn off during re-entry to earth's atmosphere, because of the

Accepted Answer

Friction with earth's atmosphere

Answer

Combustion with air

Answer

Gravitational pull by earth

Answer

Loss in weight of the satellite

Question 7

Which of the following is used to produce draught in the locomotive boilers ?

Accepted Answer

Steam jet arrangement

Answer

Chimney

Answer

Induced draught fan

Answer

Forced draught fan

Question 8

Hydrocyclone is a

Accepted Answer

Wet classifier

Answer

Crusher

Answer

Dry classifier

Answer

Magnetic separator

Question 9

Hydrogen can be

Accepted Answer

All of the above

Answer

Used in I.C. engines as fuel

Answer

Liquefied & stored under cryogenic conditions

Answer

Produced by electrolysis of water