The catalyst used for conversion of ethene to ethane is commonly ______ (nickel/ iron/cobalt)

Explanation

To determine the catalyst used for the conversion of ethene to ethane, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Reactants and Products**:
- The reactant is ethene (C2H4), which has a double bond (CH2=CH2).
- The product is ethane (C2H6), which has single bonds (CH3-CH3).

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