Fill in the blanks :
________ is added to very dilute nitric acid to produce `H_(2)`.

Explanation

To fill in the blank for the question "________ is added to very dilute nitric acid to produce `H_(2)`", we will go through the following steps:

### Step 1: Identify the Reaction
We need to determine which metal reacts with very dilute nitric acid to produce hydrogen gas (H₂).

**Hint:** Think about common metals that can displace hydrogen from acids.

### Step 2: Select the Metal
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