Chemical Engineering Basics MCQs

Question 1

The two elements required to form substitutional solid solution should not have

Accepted Answer

Widely differing electronegativity

Answer

Same crystalline structure

Answer

Same valancy

Answer

Same atomic sizes

Question 2

Solution loss reaction occurs

Accepted Answer

In the blast furnace shaft

Answer

During pretreatment of hot metal

Answer

In the L.D. process

Answer

During deoxidation in the ladle

Question 3

The bulk modulus of a material with Poisson's ratio of 0.5 is equal to

Accepted Answer

Infinity

Answer

3 × Young's modulus

Answer

Young's modulus

Answer

Zero

Question 4

Air-petrol ratio for maximum power generation in spark ignition engine is about

Accepted Answer

12 : 1

Answer

6:1

Answer

18 : 1

Answer

24 : 1

Question 5

Spark plug is provided in a/an

Accepted Answer

Engine having carburettor

Answer

Diesel engine

Answer

Compression ignition engine

Answer

Both (B) & (C)

Question 6

Springs are not made of

Accepted Answer

Carbon steel (c ≤ 0.5%)

Answer

Phospher bronze

Answer

Nickel steel

Answer

Monel

Question 7

Current asset of a factory includes the

Accepted Answer

Manufacturing plant & equipment

Answer

Goodwill of the company

Answer

Common stocks held by the company

Answer

Inventory

Question 8

In the blast furnace, incorporation of water vapour in the blast gives the following effect.

Accepted Answer

Increases the reducing potential of the gas

Answer

Increases the flame temperature

Answer

No significant change occurs

Answer

Increases the hydrogen content in the metal

Question 9

Maximum carbon content in cast iron is __________ percent.

Accepted Answer

4.3

Answer

3.8

Answer

4

Answer

4.6