19,000+ solved questions for JEE Advanced, JEE Mains, NEET & IChO — with answers and expert explanations.
At the same temperature and pressure, which of the following gases will have the highest kinetic energy per mole ?
Indicate which of the following statements are correct.
50 ml of gas A diffuses through a membrane in the same time as for the diffusion of 40 ml of a gas B under identical pressure- temperature conditions. If the molecular weight of A is 64 that of B would be
X ml of H2 gas effuses through a hole in a container in 5 seconds. The time taken for the effusion of the same volume of the gas specified below under identical condition is
If the absolute temperature of a gas is doubled and the pressure is reduced to one-half, the volume of the gas will
How many O2 molecules are present in 2.0 L of oxygen gas at 27oC temperature and 3.0 atm pressure ?
If the pressure is tripled and temperature (in kelvins) is halved, the volume of a given mass of an ideal gas becomes
A flask containing air (open to atmosphere) is heated from 300 K to 500 K. The percentage of air escaped to the atmosphere is nearly
Which of the following is a correct plot of the volume of fixed amount of ideal gas as a function of temperature (at constant pressure) ? (a) (b) (c) (d)
An open flask contains air at 27oC temperature and one atm pressure. The flask is heated to 127 oC at the same pressure. What fraction of the original air will remain in the flask?
Among the plots of P versus V, as given below, which one corresponds to Boyle’s law ? (a) (b) (c) (d)
For V versus T plot at constant pressure P1 and P2 for an ideal gas is given in adjoining figure. Which of the following relation is correct ?
Calculate the number of moles in the glass bulb shown in figure at 300 K. Given : density of glycerine = 2.72 g/mL; density of mercury = 13.6g/mL
A 10.0 L flask contains 64 g of oxygen at 27°C. (Assume O2 gas is behaving ideally). The pressure inside the flask in bar is (Given R = 0.0831 L bar K-1 mol-1) (NEET 2022)
Which one is not correct mathematical equation for Dalton's Law of partial pressure? Here p = total pressure of gaseous mixture (NEET 2022)
The volume occupied by 1.8 g of water vapour at 374°C and 1 bar pressure will be [Use R = 0.083 bar L K-1 mol-1] (NEET (Odisha) 2019)
Assertion: The graph between Pv/s V is a straight line. Reason: For adiabatic process, P 1/V (AIIMS 2019)
A 100 mL flask contained H 2 at 200 torr and a 200 M flask contained He at 100 torr. The two flasks were then connected so that each gas filled their combined volume Assume, no change in temperature, total pressure is…
Two closed bulbs of equal volume (V) containing an ideal gas initially at pressure Pi and temperature T1 are connected through a narrow tube of negligible volume as shown in the figure below. The temperature of one of…
The intermolecular interaction that is dependent on the inverse cube of distance between the molecules is: (WB JEE 2015)
The RMS speed of helium in ms-1 (atomic mass = 4.0 g mol-1) at 400 K is (EAMCET 2014)
Two gases X (molecular weight MX) and Y (molecular weight MY) (MY > MX) are at the same temperature, T in two different Containers. Their root mean square velocities are CX and CY respectively. If the average kinetic …
If average velocity of a sample of gas molecules at 300 K is 5 cm s-1, what is RMS velocity of same sample of gas molecules at the same temperature? (Given, : : u v 1 : 1.224 : 1.127) (most probable velocity), u(RMS…
Density of carbon monoxide is minimum at (KCET 2014)
Equal mass of H2, O2 and methane have been taken in a container of volume V at temperature 27oC in identical conditions. The ratio of the volumes of gases H2 : O2 : CH4 would be (CBSE AIPMT 2014)