The highest industrial consumption of molecular hydrogen is to produce compounds of element :

Options

A. Carbon
B. Nitrogen
C. Oxygen
D. Chlorine

Answer

To solve the question regarding the highest industrial consumption of molecular hydrogen, we need to identify the element for which hydrogen is primarily used in compound production.

### Step-by-Step Solution:

1. **Identify the Process**: The question hints at a significant industrial process that utilizes molecular hydrogen. One of the most notable processes is the Haber process, which synthesizes ammonia (NH₃) from nitrogen (N₂) and hydrogen (H₂).

2. **Write the Reaction**: The Haber process can be represented by the following chemical equation:
\[ N_2 + 3H_2 \rightarrow 2NH_3 \]
In this reaction, one molecule of nitrogen reacts with three molecules of hydrogen to produce two molecules of ammonia.

3. **Determine the Element**: In this process, the key element that is produced from the reaction of molecular hydrogen is nitrogen, as it forms ammonia, which is a compound of nitrogen.

4. **Conclusion**: Since the question asks for the element that has the highest industrial consumption of molecular hydrogen to produce its compounds, we conclude that the answer is nitrogen, as it is primarily used to produce ammonia via the Haber process.

5. **Final Answer**: The highest industrial consumption of molecular hydrogen is to produce compounds of the element nitrogen.