Methanol is industrially prepared by

Options

A. `CH_(3)COCH_(3)`
B. `CO + H_(2)`
C. `CH_(3) C O OH`
D. `C_(2)H_(5)OH`

Explanation

**Step-by-Step Solution:**

1. **Identify the Question**: The question asks how methanol is industrially prepared.

2. **Review the Options**: The options given are:
- CH3COCH3 (Acetone)
- CO + H2 (Carbon monoxide and hydrogen)
- CH3COOH (Acetic acid)
- C2H5OH (Ethanol)

3. **Understand the Industrial Process**: Methanol, also known as methyl alcohol, is primarily produced through a specific chemical reaction involving carbon monoxide (CO) and hydrogen gas (H2).

4. **Reaction Conditions**: The reaction between CO and H2 to produce methanol occurs under high temperature and pressure conditions. Specifically, the reaction typically takes place at temperatures ranging from 230 to 400 degrees Celsius and pressures between 50 to 100 atmospheres.

5. **Catalysts Used**: In the industrial preparation of methanol, catalysts are employed to facilitate the reaction. Common catalysts include copper oxide (CuO) and chromium oxide (Cr2O3).

6. **Write the Reaction**: The chemical reaction can be summarized as:
\[ CO + 2H_2 \rightarrow CH_3OH \]
This indicates that one molecule of carbon monoxide reacts with two molecules of hydrogen to produce one molecule of methanol.

7. **Select the Correct Option**: Based on the above information, the correct answer to the question is the second option: CO + H2.

**Final Answer**: Methanol is industrially prepared by CO + H2.

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