The major product [R] in the following sequence of reactions as :

Which of the following compounds will form the precipitate with aq. AgNO₃ solution most readily?

The mechanism of action of ''Terfenadine'' (Seldane) is :

The osmotic pressure of a solution of NaCl is 0.10 atm and that of a glucose solution is 0.20 atm. The osmotic pressure of a solution formed by mixing 1 L of the sodium chloride solution with 2 L of
the glucose solution is x $$ \times $$ 10^–3 atm. x is _____. (nearest integer)