Balancing of Redox Reactions NEET Questions

Physical Chemistry - Redox Reactions and Electrochemistry

Balancing of Redox Reactions MCQ Questions


7.
In balanced equation 2KMnO₄ + 10FeSO₄ + 8H₂SO₄ → K₂SO₄ + 2MnSO₄ + 5Fe₂(SO₄)₃ + 8H₂O, total electrons transferred are:
A.
10
B.
16
C.
2
D.
5
😑 View Answer Rough Work Error
ANSWER :
A. 10
8.
When KMnO₄ reacts with H₂C₂O₄ (oxalic acid) in acidic medium, the ratio of moles of KMnO₄ : H₂C₂O₄ is:
A.
1 : 2
B.
2 : 5
C.
5 : 2
D.
1 : 5
😑 View Answer Rough Work Error
ANSWER :
B. 2 : 5
9.
Balance: K₂Cr₂O₇ + KI + H₂SO₄ → ?. Coefficient of KI in the balanced equation is:
A.
2
B.
6
C.
3
D.
8
😑 View Answer Rough Work Error
ANSWER :
B. 6
10.
In the reaction Cu + HNO₃(dilute) → Cu(NO₃)₂ + NO + H₂O, coefficient of HNO₃ is:
A.
4
B.
10
C.
6
D.
8
😑 View Answer Rough Work Error
ANSWER :
D. 8
11.
Coefficient of HNO₃ in: Cu + HNO₃(conc.) → Cu(NO₃)₂ + NO₂ + H₂O is:
A.
8
B.
2
C.
4
D.
6
😑 View Answer Rough Work Error
ANSWER :
C. 4
12.
Balance: Zn + HNO₃(very dilute) → Zn(NO₃)₂ + NH₄NO₃ + H₂O. Coefficient of Zn:
A.
2
B.
4
C.
1
D.
8
😑 View Answer Rough Work Error
ANSWER :
B. 4