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MCQs

Total Questions : 350 | Page 6 of 35 pages
Question 51. On increasing concentration of one or more reactants, more products will be generated until
  1.    equilibrium
  2.    closed system
  3.    open system
  4.    none of above
 Discuss Question
Answer: Option A. -> equilibrium
Answer: (a).equilibrium
Question 52. If the concentration of products is decreased the equilibrium is shifted from
  1.    left to right
  2.    right to left
  3.    to the left
  4.    down to left
 Discuss Question
Answer: Option C. -> to the left
Answer: (c).to the left
Question 53. The position of equilibrium explains the amounts of
  1.    products only
  2.    reactants only
  3.    catalyst
  4.    products and reactants
 Discuss Question
Answer: Option D. -> products and reactants
Answer: (d).products and reactants
Question 54. If the equilibrium is disturbed by changing temperature, the concentration of products will
  1.    increase
  2.    decrease
  3.    remain same
  4.    remain constant
 Discuss Question
Answer: Option A. -> increase
Answer: (a).increase
Question 55. The rate of a chemical reaction is increased by a substance called
  1.    reactant
  2.    catalyst
  3.    sludge
  4.    product
 Discuss Question
Answer: Option B. -> catalyst
Answer: (b).catalyst
Question 56. In a free radical reaction, the free radicals are formed at
  1.    initiation step only
  2.    propagation step only
  3.    termination step
  4.    initiation and propagation step
 Discuss Question
Answer: Option D. -> initiation and propagation step
Answer: (d).initiation and propagation step
Question 57. The formation of radicals which attack reactants molecules generates more free radicals. This step is a
  1.    initiation step
  2.    propagation step
  3.    termination step
  4.    elimination step
 Discuss Question
Answer: Option B. -> propagation step
Answer: (b).propagation step
Question 58. Covalent bonds can be broken by
  1.    homolytic fission only
  2.    heterolysis fission only
  3.    homolytic fusion
  4.    homolytic and heterolysis fission
 Discuss Question
Answer: Option D. -> homolytic and heterolysis fission
Answer: (d).homolytic and heterolysis fission
Question 59. An acceptor of pair of the electron is termed as
  1.    nucleophile
  2.    electrophile
  3.    carbocation
  4.    anion
 Discuss Question
Answer: Option B. -> electrophile
Answer: (b).electrophile
Question 60. The body of the car is repaired with the help of a filler which is hardened by the addition of
  1.    hydrogen peroxide
  2.    benzyl peroxide
  3.    aluminum peroxide
  4.    nitrogen peroxide
 Discuss Question
Answer: Option B. -> benzyl peroxide
Answer: (b).benzyl peroxide

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