From the list of the organic compounds ethanol, ethane, methanol, methane, ethyne and ethene, name a compound
Formed by the dehydration of ethanol by concentrated sulphuric acid.

Explanation

To solve the question, we need to identify the compound formed by the dehydration of ethanol when treated with concentrated sulfuric acid. Here’s the step-by-step solution:

### Step 1: Identify the Reactant
The reactant given is ethanol, which has the chemical formula \( \text{C}_2\text{H}_5\text{OH} \) or \( \text{CH}_3\text{CH}_2\text{OH} \).

### Step 2: Understand the Reaction Conditions
Ethanol will undergo dehydration in the presence of concentrated sulfuric acid (\( \text{H}_2\text{SO}_4 \)). Concentrated sulfuric acid acts as a dehydrating agent, meaning it will remove a water molecule from ethanol.

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