Stoichiometry MCQs

Question 1

Unit of mass velocity is

Accepted Answer

Kg/m 2 .hr

Answer

Kg/m.hr

Answer

Kg/hr

Answer

Kg/m 2

Question 2

With rise in temperature, the solubility of ammonia in water at a fixed pressure

Accepted Answer

Decreases

Answer

Increases

Answer

Remains unchanged

Answer

Increases exponentially

Question 3

1 kg/cm 2 is equal to

Accepted Answer

10 metres of water column

Answer

760 torr

Answer

1 KPa

Answer

1 metre of water column

Question 4

An oxidation process is accompanied by decrease in the

Accepted Answer

Number of electrons

Answer

Oxidation number

Answer

Number of ions

Answer

All of the above

Question 5

A solution with reasonably permanent pH is called a/an __________ solution.

Accepted Answer

Buffer

Answer

Ideal

Answer

Non-ideal

Answer

Colloidal

Question 6

Assume that benzene is insoluble in water. The normal boiling points of benzene and water are 80.1 and 100°C respectively. At a pressure of 1 atm, the boiling point of a mixture of benzene and water is

Accepted Answer

Greater than 80.1°C but less than 100°C

Answer

80.1°C

Answer

Less than 80.1°C

Answer

100°C

Question 7

Which of the following is not a colligative property?

Accepted Answer

None of these

Answer

Osmotic pressure

Answer

Depression of freezing point

Answer

Lowering of vapor pressure

Question 8

Pick out the correct conversion.

Accepted Answer

1 BTU = 252 calories

Answer

1 BTU =453.6 calories

Answer

1 calorie = 252 BTU

Answer

1 calorie = 453.6 BTU

Question 9

Variation of vapor pressure with temperature can be calculated using Clausius-Clapeyron equation, which assumes that the

Accepted Answer

All of the above

Answer

Vapor follows the ideal gas law

Answer

Molal latent heat of vaporisation is constant within the limited temperature range

Answer

Volume in the liquid state is negligible compared with that in the vapor state