19,000+ solved questions for JEE Advanced, JEE Mains, NEET & IChO — with answers and expert explanations.
For gaseous state, if most probable speed is denoted by C*, average speed by C and root mean square speed by C, then for a large number of molecules, the ratios of these speeds are (WB JEE 2013)
One mole of oxygen at 273 K and one mole of sulphur dioxide at 546 K are taken in two separate containers, then (UPCPMT 2012)
The compressibility factor for a real gas at high pressure is (OJEE 2012) (a) RT Pb
By what factor does the average velocity of a gaseous molecule increases, when the temperature (in kelvin) is doubled? (CBSE AIPMT 2011)
Equal weights of CH4 and H2 are mixed in a container at 25°C. Fraction of total pressure exerted by methane is (DUMET 2011)
Three different gases X, F and Z of molecular masses 2, 16 and 64 were enclosed in a vessel at constant temperature till equilibrium is reached. Which of the following Statement is correct? (Kerala CEE 2011)
When r, P and M represent rate of diffusion, pressure and molecular mass, respectively, then the ratio of the rates of diffusion (rA/rB) of two gases A and B, is given as (WB JEE 2011)
The molecular velocity of any gas is (WB JEE 2011)
a and b are van der Waals constants for gases. Chlorine is more easily liquefied than ethane because (KCET 2011)
If the temperature changes from 27°C to 127°c relative percentage change in RMS velocity is (OJEE 2010)
Given, RMS velocity of hydrogen at 300 K is 1.9 × 103 m/s. The RMS velocity of oxygen at 1200 K will be (OJEE 2010)
At what temperature, the RMS velocity of gas present at 50°C will be doubled? (OJEE 2010)
n n C H What is the value of n? (WB JEE 2010)
Average KE of CO2 at 27°C is E. The average kinetic energy of N2 at the same temperature will be (BVP 2010)
At identical temperature and pressure, the rate of diffusion of hydrogen gas is 3 3 times that of a hydrocarbon having molecular formula
2 g of hydrogen diffuse from a container in 10 min. How many gram of oxygen would diffuse through the same container in the same time under similar conditions? (Manipal 2010)
A gaseous mixture contains 2 moles of A and 3 moles of B. Total pressure of the mixture is 5 atm. The partial pressures of A and B are respectively. (AFMC 2010)
In which one of the following, does the given amount of chlorine exert the least pressure in a vessel of capacity 1 dm3 at 273 K? (KCET 2010)
If P, V, M, T and R are the symbols of pressure, volume, molecular weight, temperature and gas constant respectively. What is the equation of density of ideal gas? (MPPMT 2010)
The temperature at which 28 g of N2 will occupy a volume of l0.0 L at 2.46 atm is (RPMT 2010)
Which of the following expression is true regarding gas laws? (w = weight; M = molecular mass) (UP CPMT 2010) (a) T M w T M w (b) T M w T M w (c) T M w T M w (d) T M w T M w
0.5 mole of each of H2, SO2 and CH4 are kept in a container. A hole was made in the container. After 3 h, the order of partial pressures in the container will be (KCET 2009) (a) SO CH H P P P (b) H SO CH P P P (c)…
If the ratio of the rates of diffusion of two gases A and B is 4 : 1, then the ratio of their densities in the same order is (J&K CET 2009)
The ratio of rates of diffusion of helium and methane under same conditions of temperature and pressure will be (CG PMT, Haryana PMT 2009)
A certain mass of the oxygen gas occupies 7 L volume under a pressure of 380 mm Hg. The volume of the same mass of the gas at standard pressure, with temperature remaining constant, shall be (UP CPMT 2009)