Chemistry Practice MCQ Page 43

Multiple Choice questions for Chemistry in the sets of 10 each on one page with questions and answers. All sets are useful in the preparation of subject tests for employment or admission.
Question: 3308   The formation of NO gas due to high temperature in combustion engine of automobiles, is a serious
  1. corroding agent
  2. explosive
  3. air pollutant
  4. irritating agent
Question: 3309   At equilibrium neither the forward reaction nor the reverse reaction goes
  1. to side ways
  2. to completion
  3. to produce the product
  4. to produce the reactants
Question: 3310   At equilibrium the ratio of reactant to product can be changed by
  1. concentration
  2. pressured
  3. temperature
  4. changing the condition
Question: 3311   If system at equilibrium is disturbed by some change, it will shift in a direction so as to
  1. support the change
  2. undo the change
  3. counter the change
  4. repeat the change
Question: 3312   The extent fo shift of a chemical reaction from equilibrium can be worked out by
  1. change in concentration
  2. value of K
  3. change in temperature
  4. value of Kc
Question: 3313   The direction on which the reaction at equilibrium will shift on changing the reaction conditions, can be deduced
  1. Le Chaterlier's principle
  2. Law of Mass Action
  3. Rate Law
  4. Boyle's Law
Question: 3314   to obtain high yield of ammonia the concentration in the reaction mixture must be increased
  1. that of hydrogen
  2. that of nitrogen
  3. both of them
  4. non of them
Question: 3315   the addition of more oxygen gas to a mixture of oxygen and sulphur dioxide will result formation of more
  1. sulphur
  2. sulphurmonoxide
  3. sulphuric acid
  4. sulpur trioxide
Question: 3316   If the concentration of the reactant s or products at Kc, the system will readjust its
  1. temperature
  2. pressure
  3. concentration
  4. volume
Question: 3317   In the manufactive of NO gas, addition of oxygen or nitrogen will result in
  1. decrease of reaction rate
  2. lesser yield of NO
  3. greater yield of NO
  4. increase of reaction rate
Question: 3318   The yield of the products of a gaseous reaction at equilibrium can be effected by changing the
  1. pressure
  2. volume
  3. temperature
  4. concentration
Question: 3319   If there is an increase in the volume during a chemical reaction, increasing the pressure will favour
  1. backward reaction
  2. equilibrium
  3. forward reaction
  4. ceasing the reaction