19,000+ solved questions for JEE Advanced, JEE Mains, NEET & IChO — with answers and expert explanations.
Equal volumes of oxygen and an unknown gas weigh 3.00g and 7.50g, respectively. Which of the following is the unknown gas?
In the gas equation PV = nRT, the value of R depends upon
Pure hydrogen sulphide is stored in a tank of 100 litre capacity at 20ºC and 2 atm pressure. The mass of the gas will be
A cylinder is filled with a gaseous mixture containing equal masses of CO and N2. The partial pressure ratio is : (a) N CO P P (b) CO N P 0.875 P (c) CO N P 2 P (d) CO N P 1/ 2 P
16 gm of oxygen and 3 gm of hydrogen are mixed and kept in 760 mm presusre at 0oC. The total volume occupied by the mixture will be nearly
If 40 L of a gas is stored under a pressure of 150 atm at 300 K. How many moles of the gas are present in the cylinder?
Avogadro’s law is the combination of I. Charles’ law. II. Boyle’s law. III. Dalton’s atomic theory. IV. Gay lussac’s law of combining volume Select the correct option.
‘Equal volumes of all gases under the same conditions of temperature and pressure contains equal number of molecules’. This is known as
Avogadro’s hypothesis states that
When the temperature of 23 ml of dry CO2 gas is changed from 10º to 30ºC at constant pressure of 760 mm, the volume of gas becomes closest to which one of the following ?
Equal weights of two gases of molecular weight 4 and 40 are mixed. The pressure of the mixture is 1.1 atm. The partial pressure of the light gas in this mixture is
The ratio of partial pressure of a gaseous component to the total vapour pressure of the mixture is equal to
3.2 g of oxygen (At. wt. = 16) and 0.2 g of hydrogen (At. wt. = 1) are placed in a 1.12 litre flask at 0ºC. The total pressure of the gas mixture will be
Which of the following mixtures of gases does not obey Dalton’s law of partial pressure ?
If three unreactive gases having partial pressures PA, PB and PC and their moles are 1, 2, and 3 respectively then their total pressure will be :
A close vessel contains equal number of nitrogen and oxygen molecules at a pressure of P mm. If nitrogen is removed from the system, then the pressure will be
Same amount of hydrogen H2(g) and CH4(g) are mixed in a vessel at 25oC. The fraction of the total pressure exerted by hydrogen is
The gases become denser at …A… Here, A refers to
Gas equation PV = nRT is obeyed by ideal gas in
If 10–4 dm3 of water is introduced into a 1.0 dm3 flask at 300 K. How many moles of water are in the vapour phase when equilibrium is established ? (Given, vapour pressure of H2O at 300 K is 3170 pa R = 8.314 JK–1 mol…
An ideal gas equation is arranged as X P M RT M = molecular mass Where, X represents
Which of the following expression is true for an ideal gas ? (a) P V T P V T (b) V V T T P P (c) P T V P T V (d) P VT P V T
An ideal gas equation is also called the …I… Here, I refers to
Which one of the following is not the value of gas constant (R)? (a) 0.0821 L atm k mol (b) 1.99 cal K mol (c) 8.3 JK mol (d) 10.2 JK mol
The temperature at which 28 g of N2 will occupy a volume of l0.0 L at 2.46 atm is (RPMT 2010)