The de-Broglie wavelength of a neutron in thermal equilibrium with heavy water at a temperature $T$ (Kelvin) and mass $m$, is

The diameter of oxygen molecule is $2.94 imes {10^{ - 10}}m.$ The Vander Waal’s gas constant $'b'$ in ${m^3}/mol$ will be

According to the kinetic theory of gases, the temperature of a gas is a measure of average

A sealed container with negligible coefficient of volumetric expansion contains helium (a monoatomic gas). When it is heated from $300\;K$ to $600\;K$ the average K.E. of helium atoms is

If the mean free path of a gas is $\lambda$, what will be the mean free path if the number density is quadrupled, keeping all other factors constant?

A container holds 4.5 kg of water. If all the water is converted to steam at STP and assumes ideal gas behavior, which is closest to the container's volume?

Cooking gas containers are kept in a lorry moving with uniform speed. The temperature of the gas molecules inside will

A box contains n molecules of a gas. How will the pressure of the gas be effected, if the number of molecules is made $2n$

$C{O_2}\left( {O - C - O} \right)$ is a triatomic gas. Mean kinetic energy of one gram gas will be (If $N$-Avogadro’s number, $k$-Boltzmann’s constant and molecular weight of $C{O_2} = 44$)

The de-Broglie wavelength of a neutron in thermal equilibrium with heavy water at a temperature $T$ (Kelvin) and mass $m$, is

The first excited state of hydrogen atom is $10.2\,\,eV$ above its ground state. The temperature is needed to excite hydrogen atoms to first excited level, is