1.

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

Answer»

II, IV, V 
I, III, V 
I, II, III 
I, II 

Solution :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`.


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