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OXIDATION REDUCTION MCQs

Total Questions : 6
Question 1. What is the oxidation state of Nitrogen in N2 (g)?
  1.    4
  2.    6
  3.    2
  4.    0
 Discuss Question
Answer: Option D. -> 0
Question 2. Determine the oxidation number of chromium in CrO42-
  1.    5
  2.    6
  3.    4
  4.    2
 Discuss Question
Answer: Option B. -> 6
Question 3. Which of these reagents can be used to convert Fe2+ to Fe3+ ion?I
  1.    I and II only
  2.    II and III only
  3.    I, II and III only
  4.    I, II, III and IV
 Discuss Question
Answer: Option A. -> I and II only
Question 4. In which substance does sulfur have a negative oxidation number?
  1.    Na2S
  2.    SO2
  3.    S
  4.    Both A & B
 Discuss Question
Answer: Option A. -> Na2S
Question 5. In a reaction, copper is reduced; its number of electrons has:
  1.    Increased
  2.    Decreased
  3.    Remained Constant
  4.    Varies Randomly
 Discuss Question
Answer: Option A. -> Increased
Question 6. In the reaction 2Ca(s) + O2(g) --> 2CaO(s), calcium is __________
  1.    Reduced
  2.    Synthesized
  3.    Oxidized
  4.    None of the above
 Discuss Question
Answer: Option C. -> Oxidized

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