Statement I : 22.4L of N2 at NTP and 5.6 L O2 at NTP contain equal number of molecules.Statement II : Under similar conditions of temperature and pressure all gases contain equal number of molecules.

According to Avogadro's law equal volumes all gas under similar conditions of temperature and pressure contain same number of molecules thus 5.6l each of N2 and O2 at STP contain same number molecules 22.4l of N2 at STP contain 4 times the number of molecules as present in 5.6l of O2 at STP   Statement I is false and Statement II is true