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Chemical Equilibrium & Electrochemistry
JEE Chemistry • 10 questions • Free on ExamBattle
Practice Questions
Q1
For the reaction N₂(g) + 3H₂(g) ⇌ 2NH₃(g), the expression for Kc is:
- A. [NH₃]²/([N₂][H₂]³)
- B. [N₂][H₂]³/[NH₃]²
- C. [NH₃]/([N₂][H₂])
- D. [NH₃]²/[H₂]³
Q2
According to Le Chatelier's principle, increasing pressure on the equilibrium N₂ + 3H₂ ⇌ 2NH₃ will:
- A. Shift equilibrium to the left
- B. Shift equilibrium to the right
- C. Have no effect
- D. Shift left and increase temperature
Q3
The pH of a 0.001 M HCl solution is:
- A. 1
- B. 2
- C. 3
- D. 4
Q4
A buffer solution is formed by mixing:
- A. Strong acid and strong base in equal amounts
- B. Weak acid and its conjugate base (salt)
- C. Two strong acids
- D. Strong acid and weak base in equal amounts
Q5
The standard EMF of a cell with E°(cathode) = +0.80 V and E°(anode) = +0.34 V is:
- A. +1.14 V
- B. +0.46 V
- C. −0.46 V
- D. +0.80 V
Q6
How many moles of electrons are transferred when 1 mole of Cu²⁺ is deposited at cathode? (Cu²⁺ + 2e⁻ → Cu)
- A. 0.5 mol
- B. 1 mol
- C. 2 mol
- D. 3 mol
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