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Questions >> JEEMAIN and NEET >> Chemistry >> States of Matter: Liquids and Gases

For an ideal gas at constant temperature , $C_v$ is

asked Mar 14, 2014 by meena.p

1 answer

The surface tension of which of the following liquid is maximum

asked Mar 9, 2014 by sharmaaparna1

1 answer

For a gas $\large\frac{R}{C_v}$ $= 0.67$ the gas may be

asked Mar 9, 2014 by sharmaaparna1

1 answer

The ratio of Boyle's temperature and critical temperature for a gas is

asked Mar 9, 2014 by sharmaaparna1

1 answer

The temperature at which $H_2$ has the same RMS speed (at 1 atm) as that of $O_2$ at NTP is

asked Mar 9, 2014 by sharmaaparna1

1 answer

The Volume occupied by molecules of one mole of gas at NTP , having radius $10^{-8}cm$ is approximately:

asked Mar 9, 2014 by sharmaaparna1

1 answer

The RMS speed of the molecules of diatomic gas is U, when the temperature is doubled , the molecules dissociates into two atoms . The new RMS speed of the atom is

asked Mar 9, 2014 by sharmaaparna1

1 answer

The ratio between the root mean square speed of $H_2$ at 50K and that of $O_2$ at 800K is..

asked Mar 6, 2014 by sharmaaparna1

1 answer

The ratio of average speed of an oxygen molecule to the RMS speed of a nitrogen molecule at the same temperature is :

asked Mar 6, 2014 by sharmaaparna1

1 answer

The average kinetic energy of an ideal gas per molecule in SI units at $25^{\large\circ}C$ will be

asked Mar 6, 2014 by sharmaaparna1

1 answer

The ratio of rates of diffusion of propane and nitrogen (I) oxide at same P and T is

asked Mar 6, 2014 by sharmaaparna1

1 answer

A cylinder was filled with gaseous mixture containing $CO$ and $N_2$ . The ratio of their partial pressure in cylinder are:

asked Mar 6, 2014 by sharmaaparna1

1 answer

Oxygen and cyclopentane at partial pressure of 570 torr and 170 torr respectively are mixed in a gas cylinder . The ratio of the number of moles of cyclopentane to the number of moles of oxygen is:

asked Mar 6, 2014 by sharmaaparna1

1 answer

The volume occupied by 1 mole of gas at 1 bar pressure and 273.15K is.....

asked Mar 5, 2014 by sharmaaparna1

1 answer

A 2.24 litre cylinder containing $O_2$ gas at $27^{\large\circ}C$ and 2 atm is found to develop a leakage was repaired , the pressure dropped to 100cm of Hg at $27^{\large\circ}C$ . The number of moles of gas escaped out during leakage is :

asked Mar 5, 2014 by sharmaaparna1

1 answer

A flask containing 12g of a gas of relative molecular mass 120 at a pressure of 100 atm , was evacuated by means of a pump untill the pressure was 0.01 atm at the same T. Which of the following is the best estimate of the number of molecules left in the flask. $(N_0 = 6\times10^{23} mol^{-1}$ )

asked Mar 5, 2014 by sharmaaparna1

1 answer

If $V_0$ is the volume of the given mass of a gas at 273K and pressure P , then according to Charles's law the volume of same mass of gas at $10^{\large\circ}C$ and pressure P will be

asked Mar 5, 2014 by sharmaaparna1

1 answer

A quantity of hydrogen gas occupies a volume of 30.0mL at a certain temperature and pressure. What volume of half of this mass of hydrogen occupy at triple the absolute temperature if the pressure were one-ninth the original gas?

asked Mar 5, 2014 by sharmaaparna1

1 answer

Two separate bulbs contain gas A and gas B. The density of gas A is twice as that of B. The molecular mass of A is $\large\frac{1}{2}$ as that of B. If temperature is constant, the ratio of the pressure of A and B is :

asked Mar 5, 2014 by sharmaaparna1

1 answer

4.0g of argon has pressure P at temperature T K in a vessel . On keeping the sample at $50^{\large\circ}C$ higher temperature 0.8g gas was given out to maintain the pressure P. The original temperature was:

asked Mar 5, 2014 by sharmaaparna1

1 answer

The value of universal gas constant R depends on..

asked Mar 5, 2014 by sharmaaparna1

1 answer

One mole of an ideal monoatomic gas is mixed with 1 mole of an ideal diatomic gas. The molar specific heat of the mixture at constant volume is.

asked Mar 5, 2014 by sharmaaparna1

1 answer

If one mole of a monoatomic gas ( $\gamma = \large\frac{5}{3}$ ) is mixed with one mole of a diatomic gas ( $\gamma = \large\frac{7}{5}$ ) . The value of V for the mixture is :

asked Mar 5, 2014 by sharmaaparna1

1 answer

The joule - Thomson coefficient for a gas is zero at

asked Mar 3, 2014 by sharmaaparna1

1 answer

What is the pressure of 2 mole of ammonia at $27^{\large\circ}C$ when its volume is 5 litre according to Van der Waal's equation? (a = 4.17 b = 0.03711)

asked Mar 3, 2014 by sharmaaparna1

1 answer

A gas obeys the equation of state P(V-b) = RT (The parameter b is a constant). The slope for an isochore will be

asked Mar 3, 2014 by sharmaaparna1

1 answer

At low pressure Van der Waal's equation is reduced to $[P+\large\frac{a}{V^2}]V = RT$ The compressibility factor can be given as

asked Mar 3, 2014 by sharmaaparna1

1 answer

At high temperature and low pressure , the Van der Waal's equation is reduced to

asked Mar 3, 2014 by sharmaaparna1

1 answer

At low pressure , the Van der Waal's equation is written as

asked Mar 3, 2014 by sharmaaparna1

1 answer

Under critical conditions , the compressibility factor for a gas is

asked Mar 3, 2014 by sharmaaparna1

1 answer

If $U_{rms} is\; 30 R^{\large\frac{1}{2}}\; at \;27^{\large\circ}$ then the molar mass of the gas in kg is

asked Mar 3, 2014 by sharmaaparna1

1 answer

If the absolute temperature of a sample in a fixed volume container is quadrupled then the root mean square speed in the initial state $u_i$ and that in the final stage $u_f$ would be related as:

asked Mar 2, 2014 by sharmaaparna1

1 answer

The rms velocity can be calculated by

asked Mar 2, 2014 by sharmaaparna1

1 answer

At room temperature , the rms speed of molecules of a certain diatomic gas is formed to be 1930 m/Sec . The gas is

asked Mar 2, 2014 by sharmaaparna1

1 answer

Four particles have speed 2,3,4 and 5 cm/sec respectively. Their RMS speed is

asked Mar 2, 2014 by sharmaaparna1

1 answer

Average velocity of the molecules of a gas in a container moving in one dimension is

asked Mar 2, 2014 by sharmaaparna1

1 answer

If P is the pressure of gas, then the kinetic energy per unit volume of the gas is

asked Mar 2, 2014 by sharmaaparna1

1 answer

Densities of air in chandigarh was found to be $1.156kgm^{-3}$ . The temperature and pressure were recorded as $20^{\large\circ}C$ and $100.142\; KPa$ . The average molecular mass of the air at that place in $g \;mol^{-1}$ is

asked Mar 2, 2014 by sharmaaparna1

1 answer

Assume the centre of sun to consists of gases whose average molecular mass is $2.0\;u$ . The density and the pressure of the gas are respectively, $1.3g\;cm^{-3} and\; 1.12\times10^9$ atm. What is the approximate temperature of the Sun?

asked Mar 1, 2014 by sharmaaparna1

1 answer

An LPG cylinder contain 15kg of butane gas at $27^{\large\circ}C$ and 10 bar pressure. The cylinder linked and it was found that after 4 days , the mass of the gas left in cylinder was only 10 kg. How much drop in pressure was occured in each day?

asked Mar 1, 2014 by sharmaaparna1

1 answer

Densities of two gases of same molecular weight are in the ratio 1:2 and their temperature are in the ratio 2:1 then the ratio of their respective pressures is

asked Mar 1, 2014 by sharmaaparna1

1 answer

The density of a gas at STP is 2.68g/L . The gas may be

asked Mar 1, 2014 by sharmaaparna1

1 answer

If the pressure of $N_2/H_2$ mixture in a closed vessel is 100 atm and 20% of the mixture then reacts , the pressure at the same temperature would be

asked Mar 1, 2014 by sharmaaparna1

1 answer

A gas is heated through $1^{\large\circ}C$ in a closed vessel and so the pressure increases by $0.4\%$ . The initial temperature of the gas was

asked Mar 1, 2014 by sharmaaparna1

1 answer

Volume coefficient according to charle's law is

asked Mar 1, 2014 by sharmaaparna1

1 answer

To expel half the mass of air from a large flask at $27^{\large\circ}C$ , it must be heated to

asked Mar 1, 2014 by sharmaaparna1

1 answer

The concentration of $O_2$ and $CO_2$ is variable but on the average , $100\;mL$ blood contains 0.02g of $O_2$ and $0.08\;g$ of $CO_2$ . Calculate the Volume of $O_2$ and $CO_2$ at $1\; atm$ and body temperature $37^{\large\circ}C$ assuming $10$ litre blood in human body.

asked Mar 1, 2014 by sharmaaparna1

1 answer

A gas in an open container is heated from $27^{\large\circ}C$ to $127^{\large\circ}C$ . The fraction of the original amount of gas remaining in the container will be

asked Feb 28, 2014 by sharmaaparna1

1 answer

Boyle's law may be represented as

asked Feb 28, 2014 by sharmaaparna1

1 answer

A match box exhibits :

asked Feb 27, 2014 by sharmaaparna1

1 answer

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