Chemical Engineering MCQs with explanations

Question 1

Sulphur content in lighter and heavier petroleum products is generally determined respectively by ________?

Accepted Answer

Bomb method and lamp method

Question 2

Which of the following parameters remains constant during chemical dehumidification?

Accepted Answer

Dry bulb temperature

Question 3

A pressurised water reactor (PWR) uses pressurised water as a________?

Accepted Answer

Coolant

Question 4

Air initially at 101. 3 kPa and 40°C and with a relative humidity of 50%, is cooled at constant pressure to 30°C. The cooled air has a________?

Accepted Answer

Higher relative humidity

Question 5

In sieve plate column, holes are drilled or punched in sizes ranging from 2.5 to 12 mm (5 mm being widely used). The hole pitch is normally ________ times the hole diameter to give the required hole area?

Accepted Answer

2.5 to 4.0

Question 6

Thermal conductivity of a material does not depend upon its________?

Accepted Answer

All A, C & C

Question 7

Tube wall thickness depends on the corrosiveness of the fluids and their operating pressure & temperature and is specified by Birmingham wire gauge (B.W.G)-a number which varies from 8 to 18 with the numbers 14 and 16 being more commonly used. Outside diameter of tubes varies from about 15 to 50 mm; however a tube of less than ________ mm outside diameter is generally not recommended for fouling fluids?

Accepted Answer

19

Question 8

Which of the following alloy steels has the energy saving properties making it suitable for use in electrical machines?

Accepted Answer

Silicon steel

Question 9

The temperature to which a vapour gas mixture must be cooled (at varying humidity) to become saturated is called the ________ temperature?

Accepted Answer

None of these

Question 10

________ is a non volatile film forming constituent of a paint?

Accepted Answer

Drying oil

Chemical Engineering MCQs with Explanations