Four tyres of a motor car were filled with nitrogen, hydrogen, helium and air. In which order are these tyres to be filled with the respective gases again?

There are three tyres, one of which is filled with H_(2) gas, the second one with air and the third one with N_(2) gas. In what sequence are these tyres to be refilled with their respective gases?

The four tyres of a motor car are filled with CO_(2) , He, H_(2) and O_(2) respectively. The order in which they are to be reinflated is

The four tyres of a motor car are filled with CO_(2) , He, H_(2) and O_(2) respectively. The order in which they are to be reinflated is

Air is filled in vehicle tyres because

Air is filled in vehicle tyres because

Three foot balls are respectively filled with nitrogen, hydrogen and helium. If the leaking of the gas occurs with time from the filling hole, then the ratio of the rate of leaking of gases (r _(N _(2) ) : r _(H _(2)) : r _(H e )) from three foot balls is

Three footballs are respectively filled with nitrogen, hydrogen and helium. If the leaking of the gas occurs with time from the filling hole, then the ratio of the rate of leaking of gases (r_(N_(2)):r_(H_(2)):r_(He)) from three footballs (in equal time interval) is: