NEET Chemistry - MCQ Practice Questions

The osmotic pressure of a solution is given by π = iMRT. If 0.1 M glucose solution has osmotic pressure 2.46 atm at 273 K, what is the van't Hoff factor?

For the exothermic reaction: 2SO₂(g) + O₂(g) ⇌ 2SO₃(g), increasing temperature will:

A buffer solution is prepared by mixing 100 mL of 0.1 M CH₃COOH and 100 mL of 0.1 M CH₃COONa. The pKa of acetic acid is 4.74. What is the pH?

In a galvanic cell, at the cathode:

At 25°C, for the reaction: Cu²⁺(aq) + Zn(s) → Cu(s) + Zn²⁺(aq), E° = 1.1 V. What is ΔG°? (F = 96500 C/mol)

The solubility product of AgCl at 25°C is 1.8 × 10⁻¹⁰. What is the solubility in mol/L?

For a spontaneous process at constant temperature and pressure:

The decomposition of H₂O₂ follows first-order kinetics with k = 0.01 s⁻¹. If initial concentration is 0.1 M, what will be the concentration after 100 seconds?

For the reaction: 2A + B ⇌ C, Kc = 0.5 at 298 K. If initial concentrations are [A] = 1 M, [B] = 1 M, [C] = 0, what is the equilibrium concentration of C?

The standard electrode potentials are: Cu²⁺ + 2e⁻ → Cu, E° = 0.34 V and Ag⁺ + e⁻ → Ag, E° = 0.80 V. Which is the strongest oxidizing agent?

For a weak acid HA with Ka = 1.8 × 10⁻⁵, if 0.1 M solution is prepared, what percentage ionization occurs?

An endothermic reaction has ΔH = +50 kJ/mol. For this reaction to be spontaneous at all temperatures, which condition must be satisfied?

The rate constant for a reaction doubles when temperature increases from 300 K to 310 K. What is the approximate activation energy (Ea)?

Which of the following factors does NOT affect the position of chemical equilibrium?

For the reaction: N₂O₄(g) ⇌ 2NO₂(g), if Kp = 0.5 atm at 298 K, what is Kc at the same temperature?

A solution has [H⁺] = 10⁻⁴ M at 25°C. What is the pH and pOH of this solution?

What is the order of the reaction if its half-life is independent of initial concentration?

In a galvanic cell, which statement is always true?

The cell potential (E°cell) for a reaction is -0.5 V. Which statement is correct?

If ΔG° = -40 kJ/mol at 298 K, what is the order of magnitude of the equilibrium constant K?