Chemical Engineering Mcqs Practice Test

Question 1

Normality of a solution does not change with the increase in the __________________?

Accepted Answer

A. Pressure

Question 2

The depression in freezing point of a solution is________________?

Accepted Answer

C. Both A. and B.

Question 3

At higher temperatures, molal heat capacities for most of the gases (at constant pressure) _______________ with increase in temperature?

Accepted Answer

B. Increases

Question 4

Which of the following terms of Vander Walls equation of state for a non-ideal gas accounts for intermolecular forces ?

Accepted Answer

A. RT

Question 5

In which of the following case of mixing of a strong acid with strong base (each of 1N concentration), temperature increase will be the highest ?

Accepted Answer

A. 30 c.c acid and 30 c.c base

Question 6

With increase in the solute concentration, the specific heat of aqueous solutions _____________________?

Accepted Answer

B. Decreases

Question 7

Osmotic pressure exerted by a solution prepared by dissolving one gram mole of a solute in 22.4 litres of a solvent at 0°C will be _______________ atmosphere?

Accepted Answer

B. 1

Question 8

Which of the following is not a unit of kinematic viscosity ?

Accepted Answer

A. Poise

Question 9

Isotopes are atoms having the same _____________________?

Accepted Answer

D. None of these

Question 10

The heat capacity of most substances is greater for the _______________ state?

Accepted Answer

B. Liquid

Question 11

The vapor pressures of benzene and toluene are 3 and 4/3 atmospheres respectively. A liquid feed of 0.4 moles of benzene and 0.6 moles of toluene is vaporised. Assuming that the products are in equilibrium, the vapor phase mole fraction of benzene is_________________?

Accepted Answer

B. 0.6

Question 12

A sugar solution containing _________________ percent sugar is equivalent to 1 Brix?

Accepted Answer

C. 1

Question 13

pH value of a solution containing 1 gm of hydrogen ion per litre will be ____________________?

Accepted Answer

A. 0

Question 14

Equal masses of CH4 and H2 are mixed in an empty container. The partial pressure of hydrogen in this container expressed as the fraction of total pressure is___________________?

Accepted Answer

B. 8/9

Question 15

No cooling occurs, when an ideal gas undergoes unrestrained expansion, because the molecules____________________?

Accepted Answer

C. Are above the inversion temperature

Question 16

Density of carbon dioxide is _________________ kg/Nm3 ?

Accepted Answer

B. 44/22.4

Question 17

The ratio of existing moles of vapor per mole of vapor free gas to the moles of vapor that would be present per mole of vapor free gas, if the mixture were saturated at the existing temperature & pressure, is termed as the_____________________?

Accepted Answer

C. Percentage saturation

Question 18

Molar heat capacity of water in equilibrium with ice at constant pressure is_____________________?

Accepted Answer

B. ∞

Question 19

The percentage ratio of the partial pressure of the vapor to the vapor pressure of the liquid at the existing temperature is_____________________?

Accepted Answer

A. Termed as relative saturation

Question 20

At room temperature, the product [H+] [OH-] in a solution is 10-14 moles/litre. If, [OH-] = 10-6 moles/litre, then the pH of the solution will be ________________________?

Accepted Answer

B. 8