The function of "Sodium pump" is a biological process operating in each and every cell of all animals. Which of the following biologically important ions is also a consituent of this pump : -

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 ?