JEE Main & Advanced Chemistry Equilibrium / साम्यावस्था Question Bank

done Law of mass action Total Questions - 10

• question_answer1)
  According to law of mass action rate of a chemical reaction is proportional to       [AFMC 2005]
  A)
                  Concentration of reactants          done clear
  B)
                  Molar concentration of reactants done clear
  C)
                  Concentration of products           done clear
  D)
                  Molar concentration of products done clear
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• question_answer2)
  In a reaction the rate of reaction is proportional to its active mass, this statement is known as     [IIT 1979]
  A)
                  Law of mass action done clear
  B)
                  Le-chatelier principle done clear
  C)
                  Faraday law of electrolysis done clear
  D)
                  Law of constant proportion done clear
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• question_answer3)
  The active mass of 64 gm of HI in a two litre flask would be [CPMT 1979]
  A)
                  2              done clear
  B)
                  1 done clear
  C)
                  5              done clear
  D)
                  0.25 done clear
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• question_answer4)
  Under a given set of experimental conditions, with increase in the concentration of the reactants, the rate of a chemical reaction                                               [BHU 1979]
  A)
                  Decreases done clear
  B)
                  Increases done clear
  C)
                  Remains unaltered done clear
  D)
                  First decreases and then increases done clear
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• question_answer5)
  The law of mass action was enunciated by           [MP PMT 1995]
  A)
                  Guldberg and Waage     done clear
  B)
                  Bodenstein done clear
  C)
                  Birthelot              done clear
  D)
                  Graham done clear
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• question_answer6)
  Theory of ?active mass? indicates that the rate of chemical reaction is directly proportional to the              [MP PET 1990]
  A)
                  Equilibrium constant done clear
  B)
                  Properties  of reactants done clear
  C)
                  Volume of apparatus done clear
  D)
                  Concentration of reactants done clear
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• question_answer7)
  The rate at which substances react depends on their [MP PMT 1997]
  A)
                  Atomic weight   done clear
  B)
                  Molecular weight done clear
  C)
                  Equivalent weight            done clear
  D)
                  Active mass done clear
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• question_answer8)
  Which is false                                                       [AMU 1999]
  A)
                  The greater the concentration of the substances involved in a reaction, the lower the speed of the reaction done clear
  B)
                  The point of dynamic equilibrium is reached when the reaction rate in one direction just balances the reaction rate in the opposite direction done clear
  C)
                  The dissociation of weak electrolyte is a reversible reaction done clear
  D)
                  The presence of free ions facilitates chemical changes done clear
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• question_answer9)
  Chemical equations convey quantitative information on the [Orissa JEE 2002]
  A)
                  Type of atoms/molecules taking part in the reaction done clear
  B)
                          Number of atoms/molecules of the reactants and products involved in the reaction done clear
  C)
                  Relative number of moles of reactants and products involved in the reaction done clear
  D)
                  Quantity of reactant consumed and quantity of product formed done clear
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• question_answer10)
  In the thermal decomposition of potassium chlorate given as \[2K\,Cl{{O}_{3}}\xrightarrow{{}}2KCl+3{{O}_{2}}\], law of mass action [MADT Bihar 1983]
  A)
                  Cannot be applied done clear
  B)
                  Can be applied done clear
  C)
                  Can be applied at low temperature done clear
  D)
                  Can be applied at high temp. and pressure done clear
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