Chemistry Question Bank

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)…

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

The temperature at which 28 g of N2 will occupy a volume of l0.0 L at 2.46 atm is (RPMT 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)

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)

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)

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)

At identical temperature and pressure, the rate of diffusion of hydrogen gas is 3 3 times that of a hydrocarbon having molecular formula

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 what temperature, the RMS velocity of gas present at 50°C will be doubled? (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)

If the temperature changes from 27°C to 127°c relative percentage change in RMS velocity is (OJEE 2010)

a and b are van der Waals constants for gases. Chlorine is more easily liquefied than ethane because (KCET 2011)

The molecular velocity of any gas is (WB JEE 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)

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)

Equal weights of CH4 and H2 are mixed in a container at 25°C. Fraction of total pressure exerted by methane is (DUMET 2011)

By what factor does the average velocity of a gaseous molecule increases, when the temperature (in kelvin) is doubled? (CBSE AIPMT 2011)

The compressibility factor for a real gas at high pressure is (OJEE 2012) (a) RT Pb

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)

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)

CFCs also knows as:

Which of the following interrelation with our surroundings are included in environmental studies?

Environmental chemistry deals with the study of the