Study the following reactions and mark the correct properties shown by water.
(i) `SO_(3) + H_(2)O to H_(2)SO_(4)`
(ii) `CI_(2)O_(7) + H_(2)O to 2HCIO_(4)`
(iii) `CaO + H_(2)O to Ca(OH)_(2)`
(iv) `Na_(2)O + H_(2)O to 2NaOH`

Options

A. All oxides react with water to give hydroxides.
B. Acidic oxides are formed by metals and basic oxides by non-metals.
C. Non - metal oxides combine with water to form acids while metallic oxides combine with water to form alkalies.
D. Acidic oxides are stronger than basic oxides since they form strong acids.

Explanation

To solve the question, we need to analyze the provided reactions and determine the properties of water based on these reactions.

### Step-by-Step Solution:

1. **Analyze Reaction (i):**
- Reaction: `SO_(3) + H_(2)O → H_(2)SO_(4)`
- Here, sulfur trioxide (SO₃) reacts with water to form sulfuric acid (H₂SO₄).
- **Conclusion:** Non-metallic oxides react with water to form acids.

2. **Analyze Reaction (ii):**
- Reaction: `Cl_(2)O_(7) + H_(2)O → 2HClO_(4)`
- Chlorine heptoxide (Cl₂O₇) reacts with water to produce perchloric acid (HClO₄).
- **Conclusion:** Again, a non-metallic oxide reacting with water forms an acid.

3. **Analyze Reaction (iii):**
- Reaction: `CaO + H_(2)O → Ca(OH)_(2)`
- Calcium oxide (CaO) reacts with water to produce calcium hydroxide (Ca(OH)₂).
- **Conclusion:** Metallic oxides react with water to form bases (alkalis).

4. **Analyze Reaction (iv):**
- Reaction: `Na_(2)O + H_(2)O → 2NaOH`
- Sodium oxide (Na₂O) reacts with water to produce sodium hydroxide (NaOH).
- **Conclusion:** This further supports that metallic oxides react with water to form bases.

### Summary of Conclusions:
- Non-metallic oxides (like SO₃ and Cl₂O₇) react with water to form acids.
- Metallic oxides (like CaO and Na₂O) react with water to form bases.

### Final Answer:
Based on the analysis of the reactions, the correct property shown by water is:
- **Non-metal oxides combine with water to form acids, while metallic oxides combine with water to form bases.**