Identify Set Containing Basic Acidic Amphoteric and Neutral Oxides

To determine the set containing all four types of oxides (basic, acidic, amphoteric, and neutral), we classify the nature of each given oxide:

1. Basic oxides: Oxides of strongly electropositive metals react with water to form bases, or react with acids to form salt and water.

   • Example: $\text{K}_2\text{O}$ reacts with water to form potassium hydroxide ($\text{KOH}$).

2. Acidic oxides: Oxides of non-metals (usually in high oxidation states) react with water to form acids, or react with bases to form salt and water.

   • Example: $\text{Cl}_2\text{O}_7$ is the acid anhydride of perchloric acid ($\text{HClO}_4$).

3. Amphoteric oxides: Oxides that possess both acidic and basic properties, meaning they react with both acids and bases to form salts.

   • Example: $\text{As}_2\text{O}_3$ (arsenic trioxide) and $\text{Al}_2\text{O}_3$ (aluminium oxide).

4. Neutral oxides: Non-metal oxides that do not react with either acids or bases to form salts.

   • Example: $\text{NO}$ (nitric oxide), $\text{CO}$ (carbon monoxide), and $\text{N}_2\text{O}$ (nitrous oxide).

Now, let's analyze the given options:

• Option A ($\text{Na}_2\text{O}, \text{K}_2\text{O}, \text{Al}_2\text{O}_3, \text{As}_2\text{O}_3$):

  • $\text{Na}_2\text{O}$ (Basic), $\text{K}_2\text{O}$ (Basic), $\text{Al}_2\text{O}_3$ (Amphoteric), $\text{As}_2\text{O}_3$ (Amphoteric).
  • Missing: Acidic and Neutral oxides.

• Option B ($\text{Al}_2\text{O}_3, \text{As}_2\text{O}_3, \text{CO}, \text{NO}$):

  • $\text{Al}_2\text{O}_3$ (Amphoteric), $\text{As}_2\text{O}_3$ (Amphoteric), $\text{CO}$ (Neutral), $\text{NO}$ (Neutral).
  • Missing: Basic and Acidic oxides.

• Option C ($\text{K}_2\text{O}, \text{Cl}_2\text{O}_7, \text{As}_2\text{O}_3, \text{NO}$):

  • $\text{K}_2\text{O}$ $\rightarrow$ Basic
  • $\text{Cl}_2\text{O}_7$ $\rightarrow$ Acidic
  • $\text{As}_2\text{O}_3$ $\rightarrow$ Amphoteric
  • $\text{NO}$ $\rightarrow$ Neutral
  • Contains all four types of oxides.

• Option D ($\text{Na}_2\text{O}, \text{N}_2\text{O}, \text{Al}_2\text{O}_3, \text{CO}$):

  • $\text{Na}_2\text{O}$ (Basic), $\text{N}_2\text{O}$ (Neutral), $\text{Al}_2\text{O}_3$ (Amphoteric), $\text{CO}$ (Neutral).
  • Missing: Acidic oxide.

Thus, option C is the correct set.