### Stoichiometry

1. 1m3 is approximately equal to

1. 28 litres
2. 35 ft3
3. 4.5 litres
4. 4.5 ft3

35 ft3

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

1. 14
2. 2.5
3. 28
4. 1.25

2.5

3. At what temperature, given mass of a gas that occupies a volume of 2 litres at N.T.P. will occupy a volume of 4 litres, if the pressure of the gas is kept constant?

1. 273°C
2. 273°K
3. 100°C
4. 200°C

273°C

4. In case of a solution (not of a solid in a liquid), whose total volume is more than the sum of volumes of its components in their pure states, solubility is

1. Independent of the temperature
2. Increased with the increase in pressure
3. Decreased with the increase in pressure
4. Unchanged by the pressure change

Decreased with the increase in pressure

5. The vapour pressure of a solution (made by dissolving a solute in a solvent) is _________ that of the pure solvent.

1. Less than
2. More than
3. Equal to
4. Either more or less; depends on the solvent

Less than

6. Which of the following gravity scales is used exclusively for liquids heavier than water?

1. Baume scale
3. API scale
4. None of these

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

1. 0
2. 1
3. 10
4. 100

10

8. "The equilibrium value of the mole fraction of the gas dissolved in a liquid is directly proportional to the partial pressure of that gas above the liquid surface". This statement pertaining to the solubility of gases in liquid is the _________ law.

1. Raoult's
2. Henry's
3. Amagat’s
4. None of these

Henry's

9. "The heat capacity of a solid compound is approximately equal to the sum of the heat capacities of the constituent elements." This is the statement of

1. Law of Petit and Dulong
2. Kopp's rule
3. Nernst heat theorem
4. Trouton's rule