Chemical Engineering Basics MCQs

Question 1

With increase in steam pressure, its specific volume decreases

Accepted Answer

Rapidly first and then slowly

Answer

Linearly

Answer

Slowly first and then rapidly

Answer

Exponentially

Question 2

Presence of small quantity of sulphur in low carbon steel improves its

Accepted Answer

Machinability

Answer

Formability

Answer

Weldability

Answer

Hardenarality

Question 3

A suitable lubricant used for watches is

Accepted Answer

Hazel-nut oil

Answer

Metallic soap solution

Answer

Grease

Answer

Palm oil

Question 4

The approximate height of a blast furnace having a useful volume of 2000 m3 is about __________ metres

Accepted Answer

55

Answer

25

Answer

35

Answer

75

Question 5

Materials used for making permanent magnets containing iron and nickel are made by __________ technique.

Accepted Answer

Forging

Answer

Powder metallurgy

Answer

Casting

Answer

None of these

Question 6

Tempering of a material does not improve its

Accepted Answer

Machinability

Answer

Toughness

Answer

Internal stress level

Answer

Softness

Question 7

In age-hardenable alloys, maximum ductility is obtained

Accepted Answer

After optimum ageing

Answer

In as cast state

Answer

Immediately after solution treatment and subsequent quenching

Answer

After overageing

Question 8

Which of the following materials has the maximum shrinkage allowance ?

Accepted Answer

Lead

Answer

Brass

Answer

Cast iron

Answer

Aluminium alloy

Question 9

Powder metallurgy is used to produce

Accepted Answer

Porosity free components

Answer

High precision components with complex cavities and sharp features

Answer

Components of large size

Answer

Components of such alloys whose constituents do not form alloys readily