JEE Questions for Chemistry Redox Reactions Quiz 5 - MCQExams.com

In which of the following, transition metal has zero oxidation state?

  • Chemistry-Redox Reactions-6821.png
  • 2)
    Chemistry-Redox Reactions-6822.png

  • Chemistry-Redox Reactions-6823.png

  • Chemistry-Redox Reactions-6824.png
The equivalent weight of phosphoric acid (H3PO4) in the reaction:
Chemistry-Redox Reactions-6825.png
  • 59
  • 49
  • 25
  • 98
The oxidation state of osmium (Os) in OsO4 is
  • + 7
  • +6
  • +4
  • +8
What is the coefficient of oxalate ion in the following reaction?
Chemistry-Redox Reactions-6828.png
  • 4
  • 2
  • 3
  • 5

Chemistry-Redox Reactions-6830.png
  • x = 5, y = 2
  • x = 2, y = 5
  • x = 4, y = 10
  • x = 5, y = 5
Which of the following is not a reducing agent?
  • SO2
  • H2O2
  • CO2
  • NO2

Chemistry-Redox Reactions-6843.png
  • 4, 3, 1, 5
  • 1, 5, 3, 7
  • 1, 3, 4, 5
  • 3, 5, 7, 1

Chemistry-Redox Reactions-6850.png

  • Chemistry-Redox Reactions-6851.png
  • 2)
    Chemistry-Redox Reactions-6852.png

  • Chemistry-Redox Reactions-6853.png

  • Chemistry-Redox Reactions-6854.png

Chemistry-Redox Reactions-6856.png
  • Cl2
  • MnCl2
  • H2O
  • KCl
  • HCl
A mole of N2 H4 loses ten moles of electrons to form a new compound Y. Assuming that all the nitrogen appears in the new compound, what is the oxidation state of nitrogen in Y ? (there is no change in the oxidation number of hydrogen
  • -1
  • -3
  • +3
  • +5

Chemistry-Redox Reactions-6859.png
  • 5
  • 3
  • 2
  • 1
A student states that burning of lime is an oxidation process. The reason he cites is that an oxide of metal is produced on burning. Which of the following statement about the above reaction is correct?
  • Both the statement and reason are correct and reason is the correct explanation of the statement
  • Both statement and reason are correct but the reason is not the correct explanation of the statement
  • The statement is correct but the reason is incorrect
  • The statement is incorrect but the reason is correct
The oxidation state of the most electronegative element in the products of the reaction between BaO2 and H2SO4 are
  • 0 and -1
  • -1 and -2
  • -2 and 0
  • -2 and +1
Number of moles of KMnO4 required to oxidise one mole of Fe(C2 O4) in acidic medium is
  • 0.6
  • 1.67
  • 0.2
  • 0.4
In a reaction, 4 moles of electrons are transferred to one mole of HNO3. The possible product obtained due to reduction is
  • 0.5 mole of N2
  • 0.5 mole of N2O
  • 1 mole of NO2
  • 1 mole of NH3

Chemistry-Redox Reactions-6865.png
  • 3 : 5 : 15
  • 5 : 3 : 1
  • 5 : 1 : 3
  • 3 : 5 : 5
The equivalent weight of barium in BaCrO4 used as an oxidising agent in acidic medium is (At. wt. of Ba = 137.34)
  • 137.34
  • 45.78
  • 114.45
  • 68.67

Chemistry-Redox Reactions-6868.png
  • (a)
  • (b)
  • (c)
  • (d)

Chemistry-Redox Reactions-6870.png
  • (a)
  • (b)
  • (c)
  • (d)
Ceric ammonium sulphate and potassium permanganate are used as oxidising agents in acidic medium for oxidation of ferrous ammonium sulphate to ferric sulphate. The ratio of number of moles of ceric ammonium sulphate required per mole of ferrous ammonium sulphate to the number of moles of KMnO4 required per mole of ferrous ammonium sulphate, is
  • 5.0
  • 0.2
  • 0.6
  • 2.0
Which one of the following reactions involves disproportionation ?

  • Chemistry-Redox Reactions-6872.png
  • 2)
    Chemistry-Redox Reactions-6873.png

  • Chemistry-Redox Reactions-6874.png

  • Chemistry-Redox Reactions-6875.png

  • Chemistry-Redox Reactions-6876.png
0:0:1


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