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Chemical Kinetics — NEET Chemistry MCQs

30 questions written by hand against the NCERT chapter. Every wrong option is explained, not just the right one.

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Sample questions from this chapter

What does the rate of a chemical reaction measure?
  1. Change in reactant or product concentration per unit time ✓
  2. Total concentration present at equilibrium
  3. Heat released per mole regardless of time
  4. Maximum possible product yield
Answer: A. Reaction rate is the decrease of reactant concentration or increase of product concentration per unit time. Equilibrium extent is the closest related but distinct concept.
Why not B: Equilibrium concentration describes reaction extent, not how quickly composition changes.
Why not C: Reaction enthalpy is thermodynamic and does not contain a time dependence.
Why not D: Maximum yield concerns equilibrium or stoichiometry rather than speed.
For 2A → 3B, if B appears at 0.60 mol L^-1 s^-1, what is the reaction rate?
  1. 0.90 mol L^-1 s^-1 by multiplying by 3/2
  2. 0.60 mol L^-1 s^-1 without coefficient normalisation
  3. 0.20 mol L^-1 s^-1 by dividing by B's coefficient 3 ✓
  4. 0.40 mol L^-1 s^-1 by dividing by A's coefficient 2
Answer: C. Reaction rate = (1/3)d[B]/dt = 0.60/3 = 0.20 mol L−1 s−1. The 0.40 trap divides by A's coefficient instead of B's.
Why not A: Product appearance must be divided by its coefficient, not multiplied by a coefficient ratio.
Why not B: A species rate is not the normalised reaction rate when its coefficient differs from one.
Why not D: The measured species is B, so its own coefficient 3 is used.
For rate = k[A]^2[B], k = 2.0×10^-3 L2 mol^-2 s^-1, [A] = 0.10 M and [B] = 0.20 M. What is the initial rate?
  1. 4.0×10^-6 mol L^-1 s^-1 after using both A factors and one B factor ✓
  2. 4.0×10^-5 mol L^-1 s^-1 after using only one A factor
  3. 2.0×10^-4 mol L^-1 s^-1 after omitting B from the product
  4. 4.0×10^-4 mol L^-1 s^-1 from treating the law as k[A][B]
Answer: A. rate = 2.0×10−3×(0.10)²×0.20 = 4.0×10−6 mol L−1 s−1. The 4.0×10−5 trap forgets to square [A].
Why not B: This uses [A] rather than [A]², losing one factor of 0.10.
Why not C: The stated rate law requires multiplication by [B].
Why not D: This ignores the second-order dependence on A.

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Questions

How many NEET questions are there on Chemical Kinetics?

This chapter test has 30 questions — 10 easy, 14 medium and 6 hard — all written against the NCERT Class 12 chapter.

Is this NEET Chemistry chapter test free?

Yes. Every chapter test is free with no login, and you get your all-India rank on every one. Nothing on the site is on sale right now.

Do the questions explain the wrong options?

Yes — every distractor carries its own explanation naming the specific misconception that makes a student pick it. That is the part most question banks skip, and it is the part that changes your next attempt.