Class XII

The constant k used in rate equation is known as
  1. Reaction constant
  2. Velocity constant
  3. Distance constant
  4. Order constant
Time required for 100 percent completion of a zero order reaction is
  1. 2k/a
  2. a/2k
  3. a/k
  4. ak
The rate of reaction can be measured as
  1. Both (b) and (c).
  2. Rate of appearance of reactant
  3. Rate of appearance of the product
  4. Rate of disappearance of reactant
The substance that slows down the reaction without being consumed is known as
  1. Hormones
  2. Positive catalyst
  3. Catalysis
  4. Inhibitors
The half life of a reaction is halved as the initial concentration is doubled . The order of reaction is
  1. 3
  2. 1
  3. 2
  4. 0
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