Fill in the blanks :
Carbon monoxide is absorbed in ________ while hydrogen is adsobred by ________ .

Explanation

**Step-by-Step Solution:**

1. **Identify the first blank:** The question asks about the absorption of carbon monoxide. Carbon monoxide (CO) is a gas that can be absorbed by certain solutions.

2. **Determine the correct solution for CO:** Carbon monoxide is absorbed in an ammoniacal solution of cuprous chloride (CuCl). This solution reacts with carbon monoxide to form a complex.

3. **Identify the second blank:** The question then asks about the adsorption of hydrogen. Adsorption refers to the process where gas molecules adhere to the surface of a solid or liquid.

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