NEET Chemistry: Chemical Kinetics — MCQ Test 17

Q6. A reaction’s rate increases by 3 times when the temperature rises from 290 K to 300 K. What is the activation energy (\( R = 8.314 \, \text{J mol}^{-1} \text{K}^{-1} \))?

Q7. The rate of a reaction increases by 8 times when the concentration of the reactant is doubled. What is the order of the reaction?

Q8. The rate constant of a reaction is \( 3.0 \times 10^{-2} \, \text{min}^{-1} \) at 300 K. If the activation energy is 60 kJ/mol, what is the rate constant at 310 K (\( R = 8.314 \, \text{J mol}^{-1} \text{K}^{-1} \))?

Q9. The half-life of a second-order reaction is 25 s when the initial concentration is \( 0.4 \, \text{mol L}^{-1} \). What is the rate constant?

Q10. A second-order reaction has a rate constant of \( 0.04 \, \text{L mol}^{-1} \text{s}^{-1} \). If the initial concentration is \( 0.25 \, \text{mol L}^{-1} \), what is the half-life?

NEET Chemistry — Chemical Kinetics

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A second-order reaction has a rate constant of \( 0.04 \, \text{L mol}^{-1} \text{s}^{-1} \) and an initial concentration of \( 0.2 \, \text{mol L}^{-1} \). What is the half-life?

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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 Chemical Kinetics. 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 Reaction, Constant, Concentration, Required, Completion, and Increases.

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. A second-order reaction has a rate constant of \( 0.04 \, \text{L mol}^{-1} \text{s}^{-1} \) and an initial concentration of \( 0.2 \, \text{mol L}^{-1} \). What is the half-life?

  • A. 125 s
  • B. 100 s
  • C. 150 s
  • D. 200 s

Q2. A reaction has a rate constant with units \( \text{mol}^{-1} \text{L} \text{s}^{-1} \). What is the order of the reaction?

  • A. 2
  • B. 1
  • C. 0
  • D. 3

Q3. A second-order reaction has a rate constant of \( 0.03 \, \text{L mol}^{-1} \text{s}^{-1} \) and an initial concentration of \( 0.25 \, \text{mol L}^{-1} \). What is the half-life?

  • A. 133.33 s
  • B. 100 s
  • C. 150 s
  • D. 200 s

Q4. For a first-order reaction, how many half-lives are required for 75% completion?

  • A. 1
  • B. 2
  • C. 3
  • D. 4

Q5. A first-order reaction has a rate constant of \( 0.0173 \, \text{min}^{-1} \). What is the time for 80% completion?

  • A. 60 min
  • B. 80 min
  • C. 100 min
  • D. 93 min

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