Stoichiometry

1. 1m³ is approximately equal to

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

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

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

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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

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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

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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

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

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

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

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

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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

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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

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10. "The total volume occupied by a gaseous mixture is equal to the sum of the pure component volumes". This is the _________ law.

1. Dalton's
2. Amagat’s
3. Gay-Lussac’s
4. Avogadro's

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