Chemical Engineering Basics MCQs

Question 1

Hydrogen in liquid steels is dissolved

Accepted Answer

As tiny gas bubbles

Answer

In the atomic form

Answer

In the ionic form

Answer

In the molecular form

Question 2

Laser welding is widely employed in the __________ industries.

Accepted Answer

Electronic

Answer

Structural

Answer

Process

Answer

Heavy

Question 3

Air refrigeration cycle is used in the air crafts, because of

Accepted Answer

Its low unit weight per ton of refrigeration

Answer

Low temperature encountered at high altitude

Answer

Its high heat transfer rate

Answer

Its higher co-efficient of performance (COP)

Question 4

Which of the following contributes maximum as main source of sulphur in the blast furnace charge ?

Accepted Answer

Coke

Answer

Sinter

Answer

Iron ore

Answer

Limestone

Question 5

Frost formation on the evaporator tubes in the domestic refrigerators

Accepted Answer

Causes heat loss due to poor heat transfer

Answer

Can be prevented by proper design

Answer

Decreased compressor power

Answer

Is immaterial

Question 6

Milk is fat dispersed in water. It is an example of

Accepted Answer

Emulsion

Answer

Suspension

Answer

Gel

Answer

Solution

Question 7

The velocity of sound in air is independent of changes in its

Accepted Answer

Pressure

Answer

Humidity

Answer

Temperature

Answer

None of these

Question 8

The most important material handling system in an integrated steel plant is the

Accepted Answer

Diesel locomotive

Answer

Belt conveyor

Answer

Truck

Answer

Overhead hoists & cranes

Question 9

Salvage value is the most flexible criteria for analysing a financial investment. 'Salvaging' means

Accepted Answer

Disposing off machine/property, which is no longer useful in the present scenerio

Answer

Disposing off a machine/property on as is where is basis

Answer

Mortgaging the obsolete machine/property

Answer

Writing off the obsolete machine/ property