The Ne atom has 10 times the mass of `H_2`. Which of the following statements is true?
I) At `25^@C` the both have the same kinetic energy
II) Ten moles of `H_2` would have the same volume as 1 mole of Ne at same temperature and pressure
III) One mole of Ne exerts the same pressure as one mole of `H_2` at STP.
IV) `AH_2` molecule travels 10 times faster than Ne atom at same temperature.
V) At STP, one litre of Ne has 10 times the density of 1 litre of `H_2`

Options

A. II, IV, V
B. I, III, V
C. I, II, III
D. I, II

Answer

B

Explanation

I) KE depends only on T.
II) `V prop n` at same P, T.
III) at STP, both exert 1 atm.
IV) `u prop 1/(sqrt(M))`
V) `d prop M`.