Chemical Engineering Basics MCQs

Question 1

The boiling & freezing points on a newly defined temperature scale in degree 'D' are 400°D & 100°D respectively. The temperature reading corresponding to 60°C on this new temperature scale will be equal to __________ °D.

Accepted Answer

280

Answer

140

Answer

180

Answer

240

Question 2

A material expanding freely due to heating will develop __________ stress.

Accepted Answer

No

Answer

Compressive

Answer

Tensile

Answer

Thermal

Question 3

Joining of thin foils is preferred to be done by

Accepted Answer

Microwaves

Answer

Gamma rays

Answer

X-rays

Answer

Gas welding

Question 4

Which of the following has the least value of ultimate tensile strength (UTS)?

Accepted Answer

High carbon steel

Answer

Medium carbon steel

Answer

Cast iron

Answer

Wrought iron

Question 5

In a good rimming steel

Accepted Answer

Carbon and silicon should be low

Answer

Silicon should be low but carbon should be high

Answer

Both silicon & carbon should be high

Answer

Silicon should be high but carbon should be low

Question 6

In a neutral solution

Accepted Answer

Both H+ and OH- ions are present in very small but equal concentration

Answer

H+ ions are absent

Answer

OH- ions are absent

Answer

None of these

Question 7

In an isochoric process,

Accepted Answer

No mechanical work is done by the system

Answer

There is no transfer of mass and energy

Answer

Free expansion of an ideal gas occurs

Answer

All of the above

Question 8

The passage between the nozzle and the __________ is called 'sprue' in case of injection moulding.

Accepted Answer

Runner

Answer

Cylinder

Answer

Mold

Answer

None of these

Question 9

Heat dissipation in cooling towers is mainly by

Accepted Answer

Evaporation

Answer

Conduction

Answer

Convection

Answer

Radiation