Commerical sample of `H_2 O_2` is labeled as 10 V. its % strength is nearly

Explanation

To find the percentage strength of a commercial sample of hydrogen peroxide (H₂O₂) labeled as 10 V, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding the Labeling**: The label "10 V" indicates that 1 liter of the solution can produce 10 liters of oxygen gas (O₂) at Normal Temperature and Pressure (NTP).

2. **Using the Reaction**: The decomposition of hydrogen peroxide can be represented by the following equation:
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