Chemical Engineering MCQs with explanations

Question 1

Lead exhausted in the atmosphere by automobiles using leaded petrol (i.e. tetraethyl lead for improving octane number) is a lethal air pollutant which causes________?

Accepted Answer

All A., B. and C.

Question 2

The combustion equations of carbon and carbon monoxide are as follows: C + O2 = CO2, ΔH = – 394 kJ/kg.mole CO + 1⁄2 O2 = CO2, ΔH = – 284.5 kJ/kg. mole. The heat of formation of CO is ________ kJ/kg. mole?

Accepted Answer

-109.5

Question 3

Vibration upto 100 kilo hertz can be most accurately measured by a ________ type accelerometer?

Accepted Answer

Piezoelectric

Question 4

Pick out the undesirable property for a good refrigerant?

Accepted Answer

High viscosity

Question 5

The rate expression for a heterogeneous catalytic reaction is given by, – rA = K.KA PA(1 + KA.PA + KR.PR), where K is surface reaction rate constant and KA and KR are absorption equilibrium constants of A and R respectively. If KR PR >> (1 + KA PA), the apparent activation energy EA is equal to (given E is the activation energy for the reaction and ΔHR and ΔHA are the activation energies of adsorption of R and A)?

Accepted Answer

E + ΔHA – ΔHR)

Question 6

Bauxite calcining rotary kilns are lined with ________ bricks?

Accepted Answer

85% alumina

Question 7

________ is not a condensation polymer?

Accepted Answer

Teflon

Question 8

Bakelite (phenol-formaldehyde) resin cannot be used as________?

Accepted Answer

Decorative paint

Question 9

Which of the following thermocouples can measure the maximum temperature?

Accepted Answer

Tungsten-molybdenum

Question 10

The maximum thickness of the metal which can be welded using ultrasonic welding is ________ mm?

Accepted Answer

3

Chemical Engineering MCQs with Explanations