IIT FOUNDATION
(IX_ Ass- 2)
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DALTON’S LAW OF PARTIAL PRESURES
1) The total pressure of a mixture of two gases is equal to
1) Sum of their partial pressures ` 2) The difference in partial pressures
3) The product of partial pressure 4) The ratio of partial pressure
2) Dalton’s law of partial pressure is not applicable to
1) H2 and N2 mixture 2) H2 and Cl2 mixture 3) H2 and CO2 mixture 4) None
3) Which mixture of gases at room temperature does not follow Dalton’s law of partial pressure?
1) NO2 and O2 2) NH3 and HCl 3) CO and CO2 4) SO2 and O2
4) Oxygen gas is collected by downward displacement of water in a jar. The level of water inside the jar is adjusted to the height of water outside the jar. When the adjustment is made, the pressure exerted by the oxygen is
1) equal to the atmospheric pressure
2) equal to the vapour pressure of oxygen at that temperature
3) equal to the atmospheric pressure plus aqueous tension at that temperature
4) equal to the atmospheric pressure minus aqueous tension at that temperature
5) The total pressure P of a mixture of four gases have the partial pressure P1, P2, P3 and P4 is given by
1) P=P1+P2 +P3 +P4 2) P=P1-P2 +P2 +P3
3) P=P1+P2 -P3 +P4 4) P=P1-P2 -P3 +P4
6) In a given mixture of gases which do not react with one another the ratio of partial pressure to total pressure of each component is equal to its
1) weight percent 2) volume percent 3) mole fraction 4) critical pressure
7) Law of partial pressure was given by
1) Graham 2) Gay Lussac 3) Dalton 4) Avogadro
8) The total pressure exerted by a number of non reacting gases is equal to the sum of partial pressures of the gases under the same conditions is known as
1) Boyle’s law 2) Charles’ law 3) Dalton’s law 4) Avogadro law
9) A mixture of two gases, having partial pressures P1 and P2 has a total pressure P, then
1) P=P1 +P2 2) P= 3) P=P1XP2 4) p=
10) A closed vessel contains equal number of nitrogen and oxygen molecules at pressure of P mm. If nitrogen is removed from the system then the pressure will be
1) P 2) 2 P 3) P/2 4) P2
11) A vessel has two equal compartments A and B containing H2 and O2 respectively, each at 1 atm pressure. If the wall separating the compartment is removed, the pressure
1) Will remain unchanged in A and B 2) Will increase in A and B decrease in B
3) Will decrease in A and increase in B 4) Will increase in both A and B


12) The partial pressure of dry gas is
1) less than that of wet gas 2) greater than that of wet gas
3) equal to that of wet gas 4) none

13) Which gas has the highest partial pressure in atmosphere?
1) CO2 2)H2O 3) O2 4) N2
14) Two gases O2 and N2 having pressure P1 and P2 kept in two vessels of equal volumes at constant temperature are taken in a third vessel of the same volume and at the same temperature. The observed pressure P of the gas mixture is P= P1+P2. This relationship, is known as
1) Boyle’s law 2) Charles’ law 3) Avogadro’s law 4) Dalton’s law
15) Assuming the solubility of O2 in water to be negligible, when 1 litre of dry oxygen is bubbled through water and collected at the same temperature and pressure in a bottle over water the volume of the gas collected would be
1) less then 1litre 2) equal 1litre 3) more then 1litre 4) only a few cm3



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