Stoichiometry MCQs

Question 1

A vapor that exists above its critical temperature is termed as a __________ vapor.

Accepted Answer

Gaseous

Answer

Saturated

Answer

Unsaturated

Answer

Sub-cooled

Question 2

Molality is defined as the number of gm moles of solute per __________ of solvent.

Accepted Answer

Kg

Answer

Litre

Answer

Gm mole

Answer

Gm

Question 3

Weight of 56 litres of ammonia at N.T.P. is __________ gm.

Accepted Answer

42.5

Answer

2.5

Answer

56

Answer

2800

Question 4

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

Accepted Answer

∞

Answer

0

Answer

1

Answer

None of these

Question 5

If a solution of eutectic composition is cooled, __________ reaching the eutectic temperature.

Accepted Answer

It will undergo no change until

Answer

The solvent begins to freeze out even before

Answer

It will not solidify even on

Answer

None of these

Question 6

°API gravity of water at N.T.P. is about

Accepted Answer

10

Answer

0

Answer

1

Answer

100

Question 7

For water evaporating into usaturated air under adiabatic conditions and at constant pressure, the __________ remains constant throughout the period of vaporisation.

Accepted Answer

Wet bulb temperature

Answer

Dry bulb temperature

Answer

Humidity

Answer

Relative saturation

Question 8

2 litres of nitrogen at N.T.P. weighs __________ gms.

Accepted Answer

2.5

Answer

14

Answer

28

Answer

1.25

Question 9

Pick out the wrong statement.

Accepted Answer

Density of dry air at N.T.P. is 1 gm/litre

Answer

One kg-mole of an ideal gas occupies 22.4 m 3 at N.T.P

Answer

One lb-mole of an ideal gas occupies 359 ft 3 at N.T.P

Answer

One gm-mole of an ideal gas occupies 22.4 litres (i.e., 22400 c.c) at N.T.P