Chemical Engineering Basics MCQs

Question 1

Magnesium is present in

Accepted Answer

Chlorophyll

Answer

Haemoglobin

Answer

Hypo solution

Answer

None of these

Question 2

Normalising of a casting does not

Accepted Answer

Induce stresses in it

Answer

Refine its grain structure

Answer

Reduce seggregation

Answer

Improve its mechanical properties

Question 3

Normalising of an object does not

Accepted Answer

Improve ductility

Answer

Refine coarse grain structure obtained during hot working

Answer

Improve yield strength

Answer

Improve machanical properties

Question 4

__________ is not used as the control rod material in a nuclear reactor.

Accepted Answer

Cobalt

Answer

Hafnium

Answer

Cadmium

Answer

Boron

Question 5

Young's modulus of a material is the measure of its

Accepted Answer

Stiffness

Answer

Malleability

Answer

Creep resistance

Answer

Tensile strength

Question 6

__________ is the hardest material out of the following.

Accepted Answer

Boron carbide

Answer

Tungsten carbide

Answer

Hardened steel

Answer

Silicon carbide

Question 7

With decrease in the grain size of a material, its creep resistance

Accepted Answer

Remains constant

Answer

Increases

Answer

Decreases

Answer

Either A or B ; depends on the material

Question 8

Normal dosage of chlorine in public water supply scheme ranges from __________ ppm.

Accepted Answer

0.5 to 1

Answer

10 to 15

Answer

300 to 500

Answer

1000 to 1500

Question 9

Which of the following is the most suitable material of construction for the condenser tubes, where the cooling medium is brine (salty water)?

Accepted Answer

Titanium

Answer

Aluminium

Answer

Copper

Answer

Stainless steel