The solubihty of AgI in NaI solution is less than that in pure water because

• Agl forms complex with Nal

• of common ion effect

• solubility product of AgI less

• the temperature of the solution decreases

Hydrogen ion concentration in mol/L in a solution of pH = 5.4 will be

• 3.98 × 10⁸

• 3.88 × 10⁶

• 3.68 × 10^-6

• 3.98 × 10^-6

XY₂ dissociated as XY₂(g) $\rightleftharpoons$XY(g) + Y (g) When the initial pressure of XY₂ is 600 mm Hg, the total equilibrium pressure is 800 mm Hg. Calculate K for the reaction assuming that the volume of the system remains unchanged.

• 50

• 100

• 166.6

• 400.0

For the following equilibrium, N₂O₄ $\rightleftharpoons$2NO₂ in the gaseous phase, NO₂ is 50% of the total volume when equilibrium is set up. Hence, per cent of dissociation of N₂O₄ is

• 50%

• 25%

• 66.66%

• 33.33%

Of the given anions, the strongest Bronsted base is

• ClO^-

• ClO${}_3^{-}$

• ClO${}_2^{-}$

• ClO${}_4^{-}$

Which of the following will violate Pauli's exclusion principle?

• 

• 

• Both (a) and (b)

• None of the above

The bond order of H${}_2^{-} \mathrm{ion} \mathrm{is} \frac{1}{2}.$ If it has 2 bonding electron, how many antibonding electrons it will have?

• 4

• 3

• 2

• 1

Ni²⁺ ion (Z= 28) contains unpaired electrons

• 1

• 2

• 3

• 5

The bond angle is maximum in PI₃,which is

• due to small size of P

• due to more bp-bp repulsion in PI₃

• due to less electronegativity of P

• None of the above

The radius of H-atom in its ground state is 0.58Å .The radius of, ₃Li²⁺ ithe similar state is

• 0.1777 Å

• 0.706 Å

• 1.06 Å

• 0.058 Å