Chemical Engineering Basics MCQs

Question 1

Adhesives

Accepted Answer

None of these

Answer

Can't be used in the form of pressure sensitive tapes

Answer

Can't join two dissimilar metals

Answer

Cure instantaneously after application on a surface

Question 2

The most commonly used material for sewers for carrying sewage in the normal situation is

Accepted Answer

Stoneware

Answer

Asbestos cement

Answer

Stainiess steel

Answer

Cast iron

Question 3

In case of brasses, with decreasing zinc percentage and increasing copper percentage, its __________ increases.

Accepted Answer

Percentage elongation

Answer

Brinell hardness

Answer

Tensile strength

Answer

All of the above

Question 4

Ageing of steel refers to the

Accepted Answer

Return of sharp yield point in temper rolled low carbon sheet after a period of time

Answer

Degradation of steel by corrosion

Answer

Failure of steel structure by overstress-ing

Answer

Decarburisation of steel by overheating

Question 5

The main reducing agent in iron blast furnace is

Accepted Answer

Carbon monoxide

Answer

Carbon dioxide

Answer

Oxygen

Answer

Air

Question 6

Main constituent of bone ash is

Accepted Answer

Calcium phosphate

Answer

Ammonium phosphate

Answer

Animal charcoal

Answer

Ammonium sulphate

Question 7

pH value of rain water in India ranges from

Accepted Answer

5.5 to 7.5

Answer

8 to 9.5

Answer

3.5 to 5

Answer

9.5 to 10.5

Question 8

Slight displacement of a floating body in liquid makes it to oscillate about its

Accepted Answer

Metacentre

Answer

Centre of pressure

Answer

Centre of gravity

Answer

None of the above

Question 9

The product of a commercial direct reduction process is

Accepted Answer

Sponge iron

Answer

Liquid iron

Answer

Solid iron

Answer

Iron saturated with carbon