Biochemical Engineering questions and answers

Biochemical Engineering Questions and Answers

A set of questions and answers to test and improve your knowledge and understanding of Biochemical Engineering.

41.

Permanent hardness of water may be removed by the addition of

A.

lime

B.

soda ash

C.

potassium permagnate

D.

sodium bicarbonate

Correct answer is B

No explanation has been provided for this answer.

42.

The ultimate source of water is

A.

rivers and lakes

B.

dew and forest

C.

rain and snow

D.

underground and surface

Correct answer is C

No explanation has been provided for this answer.

43.

Sedimentation is a physical process used in wastewater treatment to

A.

remove particles that are less dense than water

B.

remove particles that are more dense than water

C.

remove the pertinacious material from the water

D.

none of the above

Correct answer is B

No explanation has been provided for this answer.

44.

Biological oxidation processes usually referred as biological treatment, are the most common form of

A.

primary treatment

B.

secondary treatment

C.

tertiary treatment

D.

all of these

Correct answer is B

No explanation has been provided for this answer.

45.

Which of the following substances are commonly used in a filter?

A.

Charcoal

B.

Sand

C.

Both (a) and (b)

D.

Aluminum chloride

Correct answer is C

No explanation has been provided for this answer.