Physical Chemistry Questions

Equimolar solutions of the following substances were prepared separately. Which one of these will record the highest pH value?

Which one of the following pairs of solution is not an acidic buffer?

Limiting molar conductivity of ${\text{NH}}_4\text{OH}$ (i.e., ${\Lambda }_m^{\circ }({\text{NH}}_4\text{OH})$) is equal to:

In Freundlich Adsorption isotherm, the value of $1/n$ is:

Buffer solutions have constant acidity and alkalinity because:

pH of a saturated solution of ${\text{Ba(OH)}}_2$ is 12. The value of solubility product ($K_{sp}$) of ${\text{Ba(OH)}}_2$ is:

For a first order reaction A → B, the reaction rate at reactant concentration of 0.01 M is found to be 2.0 x 10^-5 mol L^-1 s^-1. The half life period of the reaction is :

The protecting power of lyophilic colloidal sol is expressed in terms of:

The ease of adsorption of the hydrated alkali metal ions on an ion-exchange resin follows the order:

Which one of the following statements is INCORRECT about enzyme catalysis?

Maximum number of electrons in a subshell with $l=3$ and $n=4$ is:

The correct set of four quantum numbers for the valence electron of rubidium atom ($Z=37$) is:

In a reaction, $A+B\to \text{Product}$, rate is doubled when the concentration of $B$ is doubled, and rate increases by a factor of $8$ when the concentrations of both the reactants ($A$ and $B$) are doubled. The rate law for the reaction can be written as:

The number of octahedral void(s) per atom present in a cubic close-packed structure is:

At 25°C, the dissociation constant of a base, BOH, is 1.0 x 10^-12. The concentration of hydroxyl ions in 0.01 M aqueous solution of the base would be :