MCQ
Complete the reaction: 2NaOH + Zn → _______ + H2.
- ANa ZnO2
- BNa2 ZnO3
- CNa2 ZnO2
- DZnO
Explanation:
2NaOH + Zn → Na2 ZnO2 + H2 Sodium zincate.
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| Column A | Column B |
| (i) Copper is used in electrical appliances | (a) Hydrogen sulphide |
| (ii) Sodium is very reactive | (b) Good conductor |
| (iii) Silver is tamished | (c) Graphite |
| (iv) A non-metal and a good conductor | (d) Stored in kerosene |
Which of the above statements are correct?