Question
The correct electron dot structure of a water molecule is:









Explanation: This dot structure shows a complete octet after oxygen shared two electrons with two univalent atoms of hydrogen.
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$2\text{KCIO}_3\xrightarrow{\text{Heat}}2\text{KCI}+3\text{O}_2$
$\text{MgO}+\text{H}_2\text{O}\rightarrow\text{Mg(OH)}_2$
$4\text{AI + 3O}_2\rightarrow\ 2\text{AI}_2\text{O}_3$
$\text{Zn + FeSO}_4\rightarrow\text{ZnSO}_4+\text{Fe}$
| 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 |