MCQ
compound → element + element
- ASynthesis
- BDecomposition
- CCombustion
- DSingle replacement
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CaO(s) + H2O(l) → Ca(OH)2(aq).
This reaction can be classified as:
Which of the following is a correct option?
| Column (A) | Column (B) | ||
| A. | Bleaching powder | 1. | Preparation of glass |
| B. | Baking soda | 2. | Production of H2 and Cl2 |
| C. | Washing soda | 3. | Decolourisation |
| D. | Sodium chloride | 4. | Antacid |
$2\text{KCIO}_3\xrightarrow{\text{Heat}}2\text{KCI}+3\text{O}_2$
$\text{MgO}+\text{H}_2\text{O}\rightarrow\text{Mg(OH)}_2$
$4\text{AI + 3O}_2\rightarrow\ 2\text{AI}_2\text{O}_3$
$\text{Zn + FeSO}_4\rightarrow\text{ZnSO}_4+\text{Fe}$
$2\text{KCIO}_3\xrightarrow{\text{Heat}}2\text{KCI}+3\text{O}_2$
$\text{MgO}+\text{H}_2\text{O}\rightarrow\text{Mg(OH)}_2$
$4\text{AI + 3O}_2\rightarrow\ 2\text{AI}_2\text{O}_3$
$\text{Zn + FeSO}_4\rightarrow\text{ZnSO}_4+\text{Fe}$