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MCQs

Total Questions : 217 | Page 5 of 22 pages
Question 41. All are oxidizing agents except
  1.    H₂O₂
  2.    KMnO₄
  3.    K₂Cr₂O₇
  4.    Carbon
 Discuss Question
Answer: Option D. -> Carbon
Answer: (d).Carbon
Question 42. The batteries we use daily involve reaction
  1.    Oxidation
  2.    Redox
  3.    Reduction
  4.    None of above
 Discuss Question
Answer: Option B. -> Redox
Answer: (b).Redox
Question 43. Some important reducing agents are
  1.    H₂
  2.    H₂S
  3.    HBr
  4.    All of above
 Discuss Question
Answer: Option D. -> All of above
Answer: (d).All of above
Question 44. The term redox reaction involves
  1.    Oxidation
  2.    Reduction
  3.    Oxidation-reduction
  4.    Hydration
 Discuss Question
Answer: Option C. -> Oxidation-reduction
Answer: (c).Oxidation-reduction
Question 45. Reduction can be explained as
  1.    Removal of electrons
  2.    Addition of electron
  3.    Loss of positive charge
  4.    Gain of positive charge
 Discuss Question
Answer: Option B. -> Addition of electron
Answer: (b).Addition of electron
Question 46. If 9.8ml of H₂SO₄ is present in one dm³, the solution is
  1.    0.5M
  2.    1M
  3.    1.5M
  4.    0.1M
 Discuss Question
Answer: Option D. -> 0.1M
Answer: (d).0.1M
Question 47. The amount of product obtained or calculated from balanced chemical equation is called
  1.    Actual Yield
  2.    Theoretical Yield
  3.    Experimental Yield
  4.    Balanced Yield
 Discuss Question
Answer: Option B. -> Theoretical Yield
Answer: (b).Theoretical Yield
Question 48. The efficiency of a chemical reaction can be checked by calculating its
  1.    Actual Yield
  2.    Experimental yield
  3.    Theoretical yield
  4.    Percentage yield
 Discuss Question
Answer: Option D. -> Percentage yield
Answer: (d).Percentage yield
Question 49. The reasons for less experimental yield than theoretical yield are
  1.    Reversible reaction
  2.    Side reaction
  3.    Pure handling
  4.    All of above
 Discuss Question
Answer: Option D. -> All of above
Answer: (d).All of above
Question 50. The amount of product obtained in a chemical reaction is called
  1.    Yield of a reaction
  2.    Product of a reaction
  3.    Result of a reaction
  4.    None of above
 Discuss Question
Answer: Option A. -> Yield of a reaction
Answer: (a).Yield of a reaction

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