Name the type of chemical reaction
On passage of electricity, water breaks down to give hydrogen and oxygen.

Explanation

To identify the type of chemical reaction that occurs when water breaks down into hydrogen and oxygen upon the passage of electricity, we can follow these steps:

### Step 1: Write the Chemical Equation
We start by writing the chemical equation for the reaction. Water (H₂O) decomposes into hydrogen (H₂) and oxygen (O₂) when electricity is passed through it.

**Chemical Equation:**
\[ 2H_2O(l) \xrightarrow{electricity} 2H_2(g) + O_2(g) \]

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