States of matter practice · Mixed difficulty

Statement - I: At 273 K, hydrogen and helium gases have positive slope at all pressure in PV
vs P graph.

Statement - II: Complete combustion of any substance requires more moles of oxygen than
the moles of substance burnt.

Which of the following represents total kinetic energy of one mole of gas?

Find the number of allotropes which contain discrete molecules held together by London forces:

Diamond, Graphite, Fullerenes, White phosphorus, Rhombic Sulphur, Black Phosphorus.

Following properties will decrease with increase in temperature except

The transport of matter in the absence of bulk flow is known as :

If pressure of a gas contained in a closed vessel is increased by $0.4\%$ when heated by $1^\circ C$ its initial temperature must be:

The partial pressure of hydrogen in a flask containing $2\,g\,{H_2}\,\,\,{\text{and}}\,\,\,32\,g\,S{O_2}$ is

Normal temperature and pressure $\mathrm{(NTP})$ of gases refers to:

Which of the following property of water can be used to explain the spherical shape of rain droplets

If volume containing gas is compressed to half, how many moles of gas remained in the vessel?

Which is lighter than dry air?

According to kinetic theory of gases for a diatomic molecule

Statement I: When temperature of one mole of an ideal gas is increased from $27^{\circ} \mathrm{C}$ to $127^{\circ} \mathrm{C}$ under isobaric condition, volume increases by $100 \mathrm{~L}$.

Statement II: Under isobaric condition, volume varies directly with temperature $(\mathrm{K})$.

For one mole of a van der Waals gas, the compressibility factor $Z\left(=\frac{P V}{R T}\right)$ at a fixed volume will certainly decrease if [Given: "a", "b" are standard parameters for van der Waals gas]

The relationship between coefficient of viscosity of a liquid and temperature can be expressed as

A perfect gas of a given mass is heated first in a small vessel and then in a large vessel, such that their volume remains unchanged. The $P - T$ curves are:

The rate of diffusion of a gas is proportional to

The $rms$ speed of gas molecules at a temperature $27\mathrm{K}$ and pressure 1.5 bar is $1 \times {10^4}\mathrm{cm}/\sec$. If both temperature and pressure are raised three times, the $\mathrm{rms}$ speed of the gas will be:

The gas with the highest critical temperature is

The numerical value of $\frac{{RT}}{{PV}}$ for a gas at critical condition is … times of $\frac{{RT}}{{PV}}$ at normal condition

A vessel is filled with a mixture of $\mathrm{O}_2$ and $\mathrm{N}_2$. At what ratio of partial pressures will be the mass of gases be identical

At normal conditions, Dalton's law of partial pressure is not applicable to which gaseous mixture

The temperature at which real gases obey the Boyle’s law over a wide range of pressure is called

The gases in the liquid form are held together by a weak attraction among the molecules, called as:

If the rms speed of a gaseous molecule is $x\,\,\mathrm{m}{\mathrm{s}^{ - 1}}$ at a pressure $p$ atm, then what will be the rms speed at a pressure $2p$ atm and constant temperature

Gaseous benzene reacts with hydrogen gas in presence of a nickel catalyst to form gaseous cyclohexane according to the reaction:

$\mathrm{C}_6 \mathrm{H}_{6(9)}+3 \mathrm{H}_{2(9)} \longrightarrow \mathrm{C}_6 \mathrm{H}_{12(9)}$

A mixture of $\mathrm{C}_6 \mathrm{H}_6$ and excess $\mathrm{H}_2$ has a pressure of $60 \mathrm{~mm}$ of $\mathrm{Hg}$ in an unknown volume. After the gas has been passed over a nickel catalyst and all the benzene converted to cyclohexane, the pressure of the gas was $30 \mathrm{~mm}$ of $\mathrm{Hg}$ in the same volume and temperature. The fraction of $\mathrm{C}_6 \mathrm{H}_5$ (by volume) present in the original volume is:

The ratio among most probable velocity, mean velocity and RMS velocity is given by

density of Neon is maximum at

The ratio among most probable velocity, average velocity and root mean square velocity is given by

The rates of diffusion of $\mathrm{S}{\mathrm{O}_2},\mathrm{C}{\mathrm{O}_2},\mathrm{PC}{\mathrm{l}_3}$ and $\mathrm{S}{\mathrm{O}_3}$ are in the following order