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Chemical Kinetics Online Quiz

Chemical Kinetics. Chemistry Quizzes

15 Questions Published
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Questions

Question 1 Multiple Choice (Single Answer)

The following which one is can never be zero or a fractional number

  1. order
  2. Rate constant
  3. Molecularity
  4. All of these
Question 2 Multiple Choice (Single Answer)

----- is depends on the initial concentration of reactants.

  1. rate constant
  2. order
  3. molecularity
  4. rate of a reaction
Question 3 Multiple Choice (Single Answer)

A reaction A→ B the stoichiometry of both reactant and product are same and hence

  1. the rate of dissappearance of (A) & the rate of appearance of (B) are same.
  2. the rate of appearance of (A) & the rate of appearance of (B) are same.
  3. the rate of appearance of (A) & the rate of dissappearance of (B) are same
  4. none of these
Question 4 Multiple Choice (Single Answer)

A + 2B → AB2 occurs by following mechanism:Step 1A+B→ AB[slowStep] 2AB+B → AB2[fast] ,Over all A+2B → AB2 The rate law

  1. k[A]
  2. k[B]
  3. k[A][B]
  4. k[A][B]2
Question 5 Multiple Choice (Single Answer)

What are the units of k for the rate law: Rate = k[A][B]2, when the concentration unit is mol/L?

  1. s-1
  2. L mol-1 s-1
  3. L2 mol-2 s-1
  4. L2 s2 mol-2
Question 6 Multiple Choice (Single Answer)

For a reaction 2A + B → 2C, with the rate equation: Rate = k[A]2[B]

  1. the order with respect to A is 1 and the order overall is 1
  2. the order with respect to A is 2 and the order overall is 2.
  3. the order with respect to A is 2 and the order overall is 3.
  4. the order with respect to B is 2 and the order overall is 2.
Question 7 Multiple Choice (Single Answer)

For the reaction, N2 + 3H2 → 2NH3, if d[NH3]/dt= 2 × 10–4 mol L–1 s–1,the value of d[H2]/dt would be

  1. 4 × 10–4 mol L–1 s–1
  2. 6 × 10–4 mol L–1 s–1
  3. 1 × 10–4 mol L–1 s–1
  4. 3 × 10–4 mol L–1 s–1
Question 8 Multiple Choice (Single Answer)

Which of these does not influence the rate of reaction?

  1. Nature of the reactants
  2. Concentration of the reactants
  3. Temperature of the reaction
  4. Molecularity of the reaction
Question 9 Multiple Choice (Single Answer)

A reaction involving two different reactants can never be

  1. Unimolecular reaction
  2. First order reaction
  3. Second order reaction
  4. Bimolecular Reaction
Question 10 Multiple Choice (Single Answer)

Which of the following statements for order of reaction is not correct?

  1. Order can be determined experimentally
  2. is = to the sum of power of concentration terms in differential rate law
  3. It is not affected with the stoichiometric coefficients of the reactants
  4. Order cannot be fractional
Question 11 Multiple Choice (Single Answer)

The photochemical reaction between H2 and Cl2 is an example of ---- order reaction.

  1. Zero
  2. first
  3. second
  4. pseudo first order.
Question 12 Multiple Choice (Single Answer)

The decomposition of thionyl chloride is an example of a zero-order reaction.

  1. True
  2. False
Question 13 Multiple Choice (Single Answer)

The first-order reaction rate constant is =

  1. 2.303/t
  2. 2.303/t log ([A0]/ [A] )
  3. 2.303/t log
  4. 2.303 / k log ([A0]/ [A] )
Question 14 Multiple Choice (Single Answer)

Unit of half-life period of the first-order reaction

  1. S
  2. S-1
  3. S-2
  4. 1/0C
Question 15 Multiple Choice (Single Answer)

decomposition of N2O on a hot platinum surface belongs to --- order.

  1. first
  2. second
  3. zero
  4. pseudo first order
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