Chemical Engineering Basics MCQs

Question 1

Catalyst used in the catalytic converter employed in automobiles to convert CO into CO 2 and for complete oxidation of un-burnt hydrocarbons is

Accepted Answer

Platinum

Answer

Nickel

Answer

Cobalt

Answer

Vanadium

Question 2

Unit of viscosity in CGS system is

Accepted Answer

gm.cm -1 .sec -1

Answer

gm.cm 2 .sec -2

Answer

gm.cm -2 .sec -1

Answer

gm.cm.sec -1

Question 3

FeO(s) + CO(g) = Fe(s) + CO 2 (g), k = 0.435 at 1173 E; At equilibrium, what will be the number of moles of CO gas required to reduce one mole of FeO at 1173 K?

Accepted Answer

3.3

Answer

1

Answer

1.3

Answer

2.3

Question 4

Which one of the following is incombustible?

Accepted Answer

CCl 4

Answer

H 2

Answer

C 2 H 2

Answer

S

Question 5

Principal alloying elements of cast tool alloys which have very high wear resistance &

Accepted Answer

high temperature strength are

Answer

Cobalt, chromium & tungsten

Answer

Cobalt, chromium & nickel

Answer

Molybdenun, tungsten & chromium, Cobalt, zirconium & molybdenum

Question 6

The units of the rate constant for a second order reaction are

Accepted Answer

Moles⁻¹. sec¹

Answer

Sec⁻¹. mole°

Answer

Moles¹. sec⁻¹

Answer

Moles¹. sec¹

Question 7

A high pressure boiler generates steam at a pressure greater than __________ kg/cm 2 .

Accepted Answer

80

Answer

10

Answer

30

Answer

50

Question 8

Which of the following has the highest modulus of elasticity (about 7 × 10 6 kg/cm 2 )?

Accepted Answer

Tungsten carbide

Answer

High speed steel

Answer

Stainless steel

Answer

Superalloys

Question 9

Pick out the wrong conversion of absolute & kinematic viscosities.

Accepted Answer

1 stoke = 1 m 2 /sec

Answer

1 stoke = 1 cm 2 /sec

Answer

1 N.sec/m 2 = 10 paise

Answer

1 m 2 /sec = 10 4 stokes