Chemical Process(Chemical Engineering ) Questions and answers for exam Preparation

Question 1. __________ are used as corrosion inhibitor for iron & steel in aqueous solutions.

Phosphates
Chromates
Sulphates
Bi-carbonates

Explanation:-

Answer: Option B. -> Chromates

Question 2. A mixture of chlorine & sodium bromide acts as a/an

Insecticides
Analgesic drug
Fire retardant
Hydrogenation catalyst

Explanation:-

Answer: Option C. -> Fire retardant

Question 3. Hydrazine (N2H4) is used mainly as a/an

Explosive
Rocket fuel
Detergents additive
None of these

Explanation:-

Answer: Option B. -> Rocket fuel

Question 4. Sugar content in sugarcane on cane basis is about __________ percent by weight.

1 to 5
5 to 10
15 to 20
20 to 30

Explanation:-

Answer: Option B. -> 5 to 10

Question 5. Common salt is generally not produced commonly by __________ method from brine.

Freeze drying
Electrolytic
Solar evaporation
Vacuum evaporation

Explanation:-

Answer: Option A. -> Freeze drying

Question 6. Naphthalene is removed from coke oven gas by

Adsorbing on palladium
Absorbing in ethanolamine
Scrubbing with wash oil
Passing it through electrostatic precipitator

Explanation:-

Answer: Option C. -> Scrubbing with wash oil

Question 7. Fusion of bauxite and __________ produces high alumina cement.

Alum
Limestone
Coke
Quartz

Explanation:-

Answer: Option B. -> Limestone

Question 8. Fusion of limestone and __________ produces high alumina cement.

Sand
Bauxite
Quicklime
Calcite

Explanation:-

Answer: Option B. -> Bauxite

Question 9. Hydrophilic group of a soap or detergent solution is

Water hating
Soil loving
Water loving
None of these

Explanation:-

Answer: Option C. -> Water loving

Question 10. Which of the following, when pyrolysed, produces perchloro-ethylene?

Ethylene dichloride
Chlorobenzene
Carbon tetrachloride
Chlorinated paraffin

Explanation:-

Answer: Option C. -> Carbon tetrachloride