NEET Chemistry: Equilibrium — MCQ Test 20

Q6. For the equilibrium \( \ce{2NO(g) <=> N2(g) + O2(g)} \), if \( K_c = 4 \) and initial concentration of \( \ce{NO} \) is 0.4 M with no products, what is \( [\ce{N2}] \) at equilibrium?

Q7. The \( K_{sp} \) of \( \ce{CuS} \) is \( 6.3 \times 10^{-36} \). What is the pH at which \( [\ce{Cu^{2+}}] = 1.0 \times 10^{-12} \, \text{M} \) in a saturated solution, given \( K_a \) of \( \ce{H2S} = 9.5 \times 10^{-8} \) and \( K_{a2} = 1.0 \times 10^{-19} \)?

Q8. In \( \ce{A(g) + 2B(g) <=> 2C(g)} \), \( K_c = 4 \) and \( [\ce{A}] = 0.1 \, \text{M} \), \( [\ce{B}] = 0.2 \, \text{M} \), \( [\ce{C}] = 0.4 \, \text{M} \) at equilibrium. What happens if temperature increases (exothermic reaction)?

Q9. For the reaction \( \ce{2HI(g) <=> H2(g) + I2(g)} \), if \( K_c = 0.04 \) at 700 K and \( [\ce{HI}] = 0.2 \, \text{M} \) at equilibrium, what is \( [\ce{H2}] \)?

Q10. The ionization constant of a weak acid \( \ce{HA} \) is \( 1.0 \times 10^{-5} \). What is the pH of a 0.1 M solution of this acid?

NEET Chemistry — Equilibrium

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Which of the following is a Lewis acid?

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About this NEET MCQ Test

This page provides a free online MCQ test for NEET Chemistry preparation, focusing specifically on the chapter Equilibrium. It contains 10 carefully selected multiple-choice questions (MCQs) designed to test your conceptual understanding and exam readiness.

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Key concepts covered in this specific test include Following, Solubility, Solution, Equilibrium, Pressure, and Concentration.

Taking these timed MCQ tests helps you simulate the real NEET exam environment. Detailed step-by-step explanations are provided for every question to help you learn from your mistakes and strengthen your fundamentals.

Preview of Questions in this Test

Q1. Which of the following is a Lewis acid?

  • A. \( \ce{NH3} \)
  • B. \( \ce{OH-} \)
  • C. \( \ce{Cl-} \)
  • D. \( \ce{Fe^{3+}} \)

Q2. The \( K_a \) of \( \ce{HF} \) is \( 6.8 \times 10^{-4} \). What is the \( K_b \) of \( \ce{F-} \) at 298 K?

  • A. \( 6.8 \times 10^{-4} \)
  • B. \( 1.0 \times 10^{-14} \)
  • C. \( 3.4 \times 10^{-11} \)
  • D. \( 1.47 \times 10^{-11} \)

Q3. For \( \ce{A2B(s) <=> 2A+(aq) + B^{2-}(aq)} \), if \( K_{sp} = 1.0 \times 10^{-9} \), what is the solubility of \( \ce{A2B} \) in mol/L?

  • A. \( 1.0 \times 10^{-3} \)
  • B. \( 6.3 \times 10^{-4} \)
  • C. \( 2.5 \times 10^{-10} \)
  • D. \( 5.0 \times 10^{-5} \)

Q4. For \( \ce{Hg2Cl2(s) <=> Hg2^{2+}(aq) + 2Cl-(aq)} \), \( K_{sp} = 1.3 \times 10^{-18} \). What is \( [\ce{Hg2^{2+}}] \) in a 0.01 M \( \ce{NaCl} \) solution?

  • A. \( 1.3 \times 10^{-18} \)
  • B. \( 1.3 \times 10^{-14} \)
  • C. \( 6.5 \times 10^{-15} \)
  • D. \( 2.6 \times 10^{-13} \)

Q5. For the equilibrium \( \ce{A(g) <=> B(g) + C(g)} \), if the initial pressure of \( \ce{A} \) is 1 atm and at equilibrium the total pressure is 1.5 atm, what is \( K_p \)?

  • A. 1.0
  • B. 0.5
  • C. 2.0
  • D. 0.25

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