Free Master of Chemistry: Industrial Chemistry Questions and Answers

Question 1

Which way of operation is not appropriate for a chemical or biochemical plant?

Accepted Answer

Discontinuous

Answer

Semi-continuous

Answer

Batch-wise

Answer

aContinuous

Question 2

When is a separation step in a manufacturing process not necessary?

Accepted Answer

When there is a complete conversion

Answer

When the reaction is reversible

Answer

When the byproducts are in form of gases

Answer

When there is a decomposition reaction

Question 3

Why is there a need for separation if just 5% of ethylene is transformed to ethylene glycol?

Accepted Answer

To recover the unreacted Ethylene Glycol

Answer

To start an intermediate reaction

Answer

To remove the ethylene glycol formed

Answer

To feed more reactant to the reacting mixture

Question 4

Will the aforementioned reaction call for a separation procedure?

Accepted Answer

No

Answer

Yes

Question 5

How is the diethyl ether removed from ethylene during the production of ethanol?

Accepted Answer

Light-ends tower

Answer

Directly removed

Answer

Crude distillation column

Answer

Low pressure flash drum

Question 6

Feed mixtures made of non-renewable resources like coal and petroleum are needed for chemical processes. What are non-renewable sources replaced by?

Accepted Answer

Biomass

Answer

Biodiesel

Answer

Sunlight

Answer

Microorganisms

Question 7

Which of the following is a requirement for a biochemical plant to operate?

Accepted Answer

Non-pathologic state of the organism

Answer

Chemical catalyst

Answer

Metallic catalyst

Answer

Elevated temperature

Question 8

What changes the physiological circumstances in a biochemical plant?

Accepted Answer

The micro-organism

Answer

The ambient conditions

Answer

State of the products

Answer

The reaction

Question 9

How else could citric acid be made besides from lemons?

Accepted Answer

Aerobic fermentation of starch

Answer

Anaerobic fermentation of glucose

Answer

Anaerobic fermentation of starch

Answer

Aerobic fermentation of glucose

Question 10

Which of the following separation methods DOES NOT take place during the production of citric acid?

Accepted Answer

Distillation

Answer

Crystallization

Answer

Ion-exchange

Answer

Ultrafiltration