The boiling point of 0.2 mol kg^–1 solution of X in
water is greater than equimolal solution of Y in water.
Which one of the following statements is true in this
case ?

The angular momentum of electron in 'd' orbital is
equal to :-

Which of the following statements is correct for a
reversible process in a state of equilibrium ?

Because of lanthanoid contraction, which of the
following pairs of elements have nearly same atomic
radii ? (Nubmers in the parenthesis are atomic
numbers).

Which of the following processes does not involve
oxidation of iron ?

A mixture of gases contains H₂ and O₂ gases in the
ratio of 1 : 4 (w/w). What is the molar ratio of the
two gases in the mixture ?