Chemical Engineering Basics MCQs

Question 1

Hardness & tensile strength of austenitic stainless steel can be increased by

Accepted Answer

Cold working

Answer

Martempering

Answer

Normalising

Answer

Hardening

Question 2

In troposphere (the weather domain), the temperature 't' at height 'h' above the sea level in metres is given by (where, temperature at sea level is 15°C and t is in °C.)

Accepted Answer

T = 15 - 0.0065 h

Answer

T = 15 + 0.0065 h

Answer

T = 0.0035 h - 15

Answer

T = 15 - 0.0035 h

Question 3

Half life of a radioactive isotope corresponds to the time required for half of the __________ to decay.

Accepted Answer

Atoms

Answer

Neutrons

Answer

Nucleons

Answer

Electrons

Question 4

In which of the following reactions, application of vacuum will help ?

Accepted Answer

None of the above

Answer

Number of gas molecules in the product side is more than that on the reactant side

Answer

Number of gas molecules in the reactant side is more than that on the product side

Answer

Number of gas molecules are the same on both the reactant & the product side

Question 5

Light year is the unit of

Accepted Answer

Distance

Answer

Time

Answer

Intensity of light

Answer

None of these

Question 6

Minimum number of members required to form a Public Limited Joint Stock Company is

Accepted Answer

7

Answer

10

Answer

12

Answer

17

Question 7

Which of the following is a commonly used manometric liquid for low pressure range?

Accepted Answer

Carbon tetrachloride

Answer

Ethyl alcohol

Answer

Glycerol

Answer

Ethylene glycol

Question 8

Stellite is a __________ material.

Accepted Answer

Non ferrous cast alloy cutting tool

Answer

Ferrous

Answer

Ceramic

Answer

Cemented carbide

Question 9

Maximum hardenability of steel depends upon its

Accepted Answer

Alloying elements content

Answer

Chemical composition

Answer

Carbon content

Answer

Grain size