JEE Chemistry - MCQ Practice Questions

At 298 K, if ΔG° = -46.5 kJ/mol for a reaction, what is the equilibrium constant K? (R = 8.314 J/mol·K)

For the reaction: 2A(g) ⇌ B(g), Kp = 0.5 atm at 500 K. If initial pressure of A is 2 atm, what is equilibrium pressure of B?

For a first-order reaction with half-life of 10 minutes, what percentage of reactant remains after 30 minutes?

What is the pH of a buffer solution containing 0.1 M acetic acid and 0.15 M sodium acetate? (Ka = 1.8 × 10⁻⁵)

Ksp of AgCl is 1.8 × 10⁻¹⁰. What is the molar solubility in 0.1 M NaCl solution?

At 25°C, for a cell with E°cell = 0.92 V, what is ΔG°? (F = 96485 C/mol)

Which pair of substances will form an ideal solution?

The rate law for reaction is: rate = k[A]²[B]. If [A] is doubled and [B] is halved, how does rate change?

For an exothermic reaction at 298 K, which condition favors spontaneity?

The molar conductivity of a weak electrolyte increases with dilution because:

For the reaction 2A(g) ⇌ B(g) + C(g), if initial pressure is 2 atm and degree of dissociation is 0.5, what is the total pressure at equilibrium?

A solution contains 0.1 M weak acid HA (Ka = 1×10⁻⁵). The degree of ionization is approximately:

In the Williamson ether synthesis, the reactivity of alkyl halides follows the order:

Which of the following compounds will show aldol condensation?

The oxidation of primary alcohol to aldehyde can be selectively done using:

Which mechanism is followed in the hydrolysis of alkyl halides under basic conditions?

In the nitration of benzene, the attacking species is:

The dehydration of 2-methylbutan-2-ol gives primarily:

Which compound will not undergo Cannizzaro reaction?

The rate of SN1 reaction is independent of: