The given figure shows set-up to study the reaction of gas X with copper(II) oxide:
Which of the following statements is/are correct?
I. 1 mole of H2O contains 2 moles of oxygen
molecules and 1 mole of hydrogen molecules.
II. Gas X is a compound containing nitrogen and
hydrogen.
III. The number of atoms present in 22.4 L of N2 is 6.023 × 1023.
IV. The number of atoms present in 22.4 L of water
vapours is 18.069 × 1023.
AI only
BII and IV only
CIII and IV only
DII and III only