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.

21.

The bitter taste of the high protein materials is reduced by using

A.

invertase

B.

dectinase

C.

protease

D.

none of these

Correct answer is C

No explanation has been provided for this answer.

22.

Trichoderma β-glucanase is reported

A.

to stabilize mashing

B.

to convert taste fractions of dextrins to fermentable sugars in beer

C.

to convert starch to dextrin

D.

all of the above

Correct answer is A

No explanation has been provided for this answer.

23.

Enzymes act as antimicrobials

A.

by depriving an organism of a necessary metabolite

B.

by generating a substances toxic to the organism

C.

by attracting a cell wall component

D.

all of the above

Correct answer is D

No explanation has been provided for this answer.

24.

Lysozyme is naturally present in

A.

egg white

B.

bacteria

C.

tears & milk

D.

all of these

Correct answer is D

No explanation has been provided for this answer.

25.

Juice clarification extraction is facilitated by using

A.

cellulases

B.

amylase

C.

inulinase

D.

lactase

Correct answer is A

No explanation has been provided for this answer.

26.

β-amylase is

A.

endoenzyme

B.

exoenzyme

C.

saccharifying enzyme

D.

both (b) and (c)

Correct answer is D

No explanation has been provided for this answer.

27.

Coliform bacteria in water is an indication of the presence of

A.

radioactive wastes

B.

excess fertilizer

C.

decaying animals and plants

D.

human feces

Correct answer is D

No explanation has been provided for this answer.

28.

Both temporary and permanent hardness of water can be removed by

A.

boiling

B.

distillation

C.

filtration

D.

decantation

Correct answer is B

No explanation has been provided for this answer.

29.

The methods used for biological treatment are

A.

lagoon

B.

activated sludge process

C.

oxidation ditches

D.

all of these

Correct answer is D

No explanation has been provided for this answer.

30.

Zeolite softening process removes both temporary and permanent hardness of water. In this process, the calcium and magnesium present in water are precipitated as

A.

insoluble carbonates

B.

insoluble zeolites

C.

insoluble chlorides

D.

insoluble sulfates

Correct answer is B

No explanation has been provided for this answer.


Sub-categories

Enzymes

Water Treatment