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Class 9 Chemistry Chapter 7 MCQs Notes
| Post Topic | Solved MCQs |
| Book Code | Chemistry |
| Class | 9th Class |
| Chapter/Full | Chapter 7 |
| Board | Punjab Board |
Class 9 Chemistry Chapter 7 MCQs With Answers
1: Spontaneous chemical reactions take place in:
(a) Electrolytic cell
(b) Galvanic cell
(c) Nelson’s cell
(d) Downs cell
2: The formation of water from hydrogen and oxygen is:
(a) Redox reaction
(b) Acid-base reaction
(c) Neutralization
(d) Decomposition
3: Which one of the following is not an electrolytic cell?
(a) Downs cell
(b) Galvanic cell
(c) Nelson’s cell
(d) Both a and c
4: The oxidation number of chromium in K Cr O is:
(a) +2
(b) +6
(c) +7
(d) +14
5: Which one of the following is not an electrolyte?
(a) Sugar solution
(b) Sulphuric acid solution
(c) Lime solution
(d) Sodium chloride solution
6: The most common example of corrosion is:
(a) Chemical decay
(b) Rusting of iron
(c) Rusting of aluminum
(d) Rusting of tin
7: Nelson’s cell is used to prepare caustic soda along with gases. Which of the following gases is produced at the cathode:
(a) Cl2
(b) H2
(c) O2
(d) O2
8: During the formation of water from hydrogen and oxygen, which of the following does not occur:
(a) Hydrogen has oxidized
(b) Oxygen has reduced
(c) Oxygen gains electrons
(d) Hydrogen behaves as an oxidizing agent
9: The formula of rust is:
(a) Fe2O3.nH2O
(b) Fe2O3
(c) Fe(OH)3.nH2O
(d) Fe(OH)3
10: In the redox reaction between Zn and HC1, the oxidizing agent is:
(a) Zn
(b) H+
(c) Cl-
(d) H2
Chemistry Chapter 7 MCQs PDF Download
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