Chemical Engineering questions and answers

Chemical Engineering Questions and Answers

A set of Chemical Engineering questions and answers to test your understanding of developing and designing chemical manufacturing processes. Ideal for Chemical engineering students and candidates preparing for job aptitde tests or interviews.

11.

Absolute zero pressure can be attained at a temperature of

A.

0°C

B.

50°K

C.

0°R

D.

none of these

Correct answer is C

No explanation has been provided for this answer.

12.

Cobalt - 60 is used as a source of __________ in medical therapy & industrial radiography.

A.

X-rays

B.

γ-rays

C.

α-rays

D.

β-rays

Correct answer is B

No explanation has been provided for this answer.

13.

In condensers used in thermal power plants, steam is normally used in shell side and cooling water on the tube side, because of the reason that

A.

compared to the mass flow rate of cooling water, the rate of condensation of steam is invariably smaller.

B.

maintaining vacuum on tube side is more difficult than that on the shell side.

C.

water velocity can be increased conveniently to increase the overall heat transfer co-efficient because of its lower specific volume compared to steam.

D.

condenser can act as a storage unit for condensed steam.

Correct answer is C

No explanation has been provided for this answer.

14.

Maximum amount of thermal radiation is emitted at all wavelengths at any specified temperature by a/an __________ body.

A.

grey

B.

black

C.

opaque

D.

white

Correct answer is A

No explanation has been provided for this answer.

15.

Transformation range for ferrous material is the temperature interval during which __________ is formed during its heating.

A.

cementite

B.

austenite

C.

martensite

D.

pearlite

Correct answer is B

No explanation has been provided for this answer.