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MCQs

Total Questions : 350 | Page 31 of 35 pages
Question 301. Free radicals are not produced in the step of
  1.    initiation step
  2.    propagation step
  3.    termination step
  4.    none of above
 Discuss Question
Answer: Option C. -> termination step
Answer: (c).termination step
Question 302. The bond breaking in which the atoms at each end of bond is left with one electron (e⁻) from the pair forming covalent bond is
  1.    homolytic fission
  2.    heterolytic fission
  3.    homolytic fusion
  4.    heterolytic fusion
 Discuss Question
Answer: Option A. -> homolytic fission
Answer: (a).homolytic fission
Question 303. The half-life of the first-order reaction is
  1.    greater
  2.    lesser
  3.    high
  4.    constant
 Discuss Question
Answer: Option D. -> constant
Answer: (d).constant
Question 304. Successive half-lives which decrease with the passage of time following
  1.    first order
  2.    second order
  3.    zero order
  4.    unit order
 Discuss Question
Answer: Option C. -> zero order
Answer: (c).zero order
Question 305. The time required for the concentration of reactant to fall down to its half value from the original value is
  1.    reaction life
  2.    half life
  3.    half reactant
  4.    ideal life
 Discuss Question
Answer: Option B. -> half life
Answer: (b).half life
Question 306. The order of reaction are whole numbers
  1.    always
  2.    seldom
  3.    forever
  4.    never
 Discuss Question
Answer: Option B. -> seldom
Answer: (b).seldom
Question 307. The rate constant is the
  1.    proportionality constant
  2.    K
  3.    kΔH
  4.    none of above
 Discuss Question
Answer: Option C. -> kΔH
Answer: (c).kΔH
Question 308. The overall representation of a reaction rate in terms of the equation is known as
  1.    rate of reaction
  2.    rate equation
  3.    reaction equation
  4.    balanced equation
 Discuss Question
Answer: Option B. -> rate equation
Answer: (b).rate equation
Question 309. Units of 'k' constant vary with the form of
  1.    equation
  2.    reactant
  3.    products
  4.    reactions
 Discuss Question
Answer: Option A. -> equation
Answer: (a).equation
Question 310. The effect of concentration of reagent on the rate of reaction determines
  1.    order of reaction
  2.    concentration of products
  3.    concentration of reactants
  4.    energy of activation
 Discuss Question
Answer: Option A. -> order of reaction
Answer: (a).order of reaction

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