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Indian Navy AA (Artificer Apprentice) Chemical Kinetics — practice questions

Explore 27 free Chemical Kinetics questions in Indian Navy AA (Artificer Apprentice) Chemistry. Open each question or exercise to read its content, reference answers and available explanation.

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Chemical Kinetics questions and exercises with answers

Showing questions 1–27 of 27.

Rate of reaction is defined as:Read the answer and worked solution →For Arrhenius plot of ln k vs 1/T, slope equals:Read the answer and worked solution →Order or molecularity?Read the answer and worked solution →True or false: order and molecularityRead the answer and worked solution →Read the order off the rate lawRead the answer and worked solution →Complete the definition of orderRead the answer and worked solution →True or false: where a rate law comes fromRead the answer and worked solution →Instantaneous rate or average rate?Read the answer and worked solution →Match each symbol in the Arrhenius equation to its meaningRead the answer and worked solution →Complete the definition of activation energyRead the answer and worked solution →Tap everything that raises the rate of a reactionRead the answer and worked solution →Assertion and reasonRead the answer and worked solution →The Arrhenius equationRead the answer and worked solution →Order the steps: find the order of a reactionRead the answer and worked solution →Two are true, one is notRead the answer and worked solution →Three of these are wrong. Find the one that holds.Read the answer and worked solution →Spot the one that does not belongRead the answer and worked solution →True or false: what kinetics studiesRead the answer and worked solution →Flip and pair: term with meaningRead the answer and worked solution →Tap every factor the chapter says affects the rateRead the answer and worked solution →Complete the collision theory modificationRead the answer and worked solution →Which quantity is being described?Read the answer and worked solution →Assertion and reason: rates and constantsRead the answer and worked solution →Reading the definitions backRead the answer and worked solution →Order the energy story of a reactionRead the answer and worked solution →True or false: the Arrhenius pictureRead the answer and worked solution →Spot the odd one outRead the answer and worked solution →

Worked practice questions

Rate of reaction is defined as:

  1. Amount of product
  2. Change in concentration of reactant per unit time
  3. Total moles
  4. Velocity
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Correct answer: B. Change in concentration of reactant per unit time

Rate = -d[R]/dt = +d[P]/dt (concentration change per unit time). SI unit: mol L⁻¹ s⁻¹. Defined positive.

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For Arrhenius plot of ln k vs 1/T, slope equals:

  1. -Ea/R (giving Ea)
  2. Ea
  3. -R
  4. k
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Correct answer: A. -Ea/R (giving Ea)

ln k = ln A - (Ea/R)(1/T). Plotting ln k vs 1/T gives straight line, slope = -Ea/R, y-intercept = ln A. Standard method to determine activation energy from rate data.

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Order or molecularity?

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Items
  1. Item
    Found experimentally
    Category
    Order
  2. Item
    Can be zero or a fraction
    Category
    Order
  3. Item
    Read off the rate law
    Category
    Order
  4. Item
    Defined only for elementary reactions
    Category
    Molecularity
  5. Item
    Limited to values 1, 2 or 3
    Category
    Molecularity
  6. Item
    Counts the species in one step
    Category
    Molecularity
Categories
  1. Item
    Order
  2. Item
    Molecularity
Order is measured; molecularity is counted from a proposed mechanism. Order can be zero or fractional, molecularity cannot. Source: syllabus Chemistry Part I, Ch 3 Chemical Kinetics.

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