Chemical Engineering MCQs with explanations

Question 1

In case of the decomposition of hydroiodic acid (2HI ⇌ H2 + I2), addition of H2 (at equilibrium condition) will________?

Accepted Answer

Diminish the degree of dissociation of HI

Question 2

Contact process of sulphuric acid manufacture ________?

Accepted Answer

Yields acid of higher concentration than chamber process

Question 3

In a chemical reaction, represented by as shown in the bellow figure, it is observed that the (i) Rate of reaction increases by a factor of 4 on doubling the concentration of the reactant. (ii) Rate of reaction increases by a factor of 9 on trebling the concentration of the reactant. Then the rate of the reaction is proportional to(where, CA = concentration of the reactant)________?

Accepted Answer

CA2

Question 4

Signal normally used to study non-ideal flow by stimulus response technique is ________ input?

Accepted Answer

Both A. & B.

Question 5

In stripping section of continuous distillation column, the________?

Accepted Answer

Liquid is enriched with high boiler

Question 6

Pick out the wrong statement?

Accepted Answer

Teflon is formed by step growth polymerisation

Question 7

A steel alloy containing 36% nickel is called ________, which has a zero co-efficient of expansion?

Accepted Answer

Invar

Question 8

Most of the plastics are safe to be used upto a maximum temperature of ________ °C?

Accepted Answer

150

Question 9

If „f’ is defined as above, then which of the following applies to a feed at dew point?

Accepted Answer

f = 1

Question 10

Pressure drop due to pipe fittings can be estimated by the equation, ΔP/ρ = 4f, (Le/D) (V2/2gc) where, Le = equivalent length of straight pipeline which will incur the same frictional loss as the fitting and D = diameter of the fitting. The value of (Le/D) (dimensionless) for 45° elbow and 180° close return bends would be respectively around________?

Accepted Answer

45 and 75

Chemical Engineering MCQs with Explanations