Chemical Engineering MCQs with explanations

Question 1

Higher is the mesh number, smaller will be the aperture size of the screen. It means that the aperture size of a 200 mesh screen will be smaller than that of 20 mesh screen. This is valid for________?

Accepted Answer

All A., B. and C.

Question 2

PVγ = Constant (where, γ = Cp/Cv) is valid for a/an ________ process?

Accepted Answer

Adiabatic

Question 3

For an isothermal process, the internal energy of a gas________?

Accepted Answer

Remains unchanged

Question 4

Use of raschig rings in place of crushed stones as packing in packed beds (other things being same)?

Accepted Answer

Decreases pressure drop, increases surface area

Question 5

Which property is important for bricks used in the combustion chamber & dome of blast furnace stoves?

Accepted Answer

High refractoriness

Question 6

‘Semi steel’ is________?

Accepted Answer

Both A. and B.

Question 7

Working principle of mercury in glass thermometer is based on volumetric expansion of mercury with increase in temperature. Which of the following undergoes minimum volumetric expansion for a given temperature change?

Accepted Answer

Mercury

Question 8

Bronze is an alloy of copper and ________?

Accepted Answer

Tin

Question 9

Which of the following hardness tests does not measure the indentation hardness of metals and alloys?

Accepted Answer

Shore scleroscope test

Question 10

Maximum permissible residual chlorine in treated water should be ________ mg/litre?

Accepted Answer

0.2 to 0.3

Chemical Engineering MCQs with Explanations