Chemical Engineering Basics MCQs

Question 1

Which is the most lethal weapon ?

Accepted Answer

Cobalt bomb

Answer

Atom (fusion) bomb

Answer

Hydrogen bomb

Answer

Neutron bomb

Question 2

Probability of cavitation occuring becomes very high, when the local __________ resulting in water bubbles formation, which on rupture cause cavitation

Accepted Answer

All of the above

Answer

Pressure falls below the vapour pressure

Answer

Pressure becomes very high

Answer

Temperature becomes low

Question 3

Tip of the match stick contains a mixture of

Accepted Answer

S + K2Cr2O7 + White P

Answer

K + S

Answer

K + S + K2Cr2O7

Answer

None of these

Question 4

A friction lighter is normally used for lighting gas welding torch, because of the reason that

Accepted Answer

Safety of welder is ensured

Answer

Its initial cost is very low

Answer

Duration of spark created is very small

Answer

It is easier to operate & maintain

Question 5

Gratings is associated with the measurement of

Accepted Answer

Linear displacement

Answer

Concavity/convexity

Answer

Surface texture

Answer

Flatness

Question 6

Nickel is a __________ material.

Accepted Answer

Ferromagnetic

Answer

Semi-conductor

Answer

Paramagnetic

Answer

Ferroelectric

Question 7

Coarse grained steels have

Accepted Answer

No tendency to distort

Answer

Low toughness

Answer

High density

Answer

Very high toughness

Question 8

Colloids can be purified by

Accepted Answer

Dialysis

Answer

Reverse osmosis

Answer

Coagulation

Answer

Peptization

Question 9

An oxidation process is accompanied with decrease in the

Accepted Answer

Number of electrons

Answer

Oxidation number

Answer

Number of ions

Answer

All of the above