Noble gases are absorbed on

Options

A. Anhydrous `CaCl_(2)`
B. Charcoal
C. Conc. `H_(2)SO_(4)`
D. Coconut

Explanation

To determine the correct answer to the question "Noble gases are absorbed on," we can follow these steps:

### Step 1: Understand Noble Gases
Noble gases include Helium (He), Neon (Ne), Argon (Ar), Krypton (Kr), Xenon (Xe), and Radon (Rn). They are characterized by their lack of reactivity due to having a complete valence shell of electrons.

**Hint:** Recall the properties of noble gases and their presence in the atmosphere.

### Step 2: Identify Adsorption
Adsorption is the process by which atoms, ions, or molecules from a gas, liquid, or dissolved solid adhere to a surface. This is different from absorption, where a substance is taken up into the volume of another substance.

**Hint:** Differentiate between adsorption and absorption to understand the context of the question.

### Step 3: Analyze the Options
The options provided are:
1. Hydrous
2. CSL 2
3. Charcoal
4. Comketchers
5. Proponate

Among these, we need to identify which material is commonly known for its ability to adsorb gases.

**Hint:** Consider common materials used for gas adsorption in laboratory and industrial applications.

### Step 4: Evaluate Charcoal
Charcoal is a porous material that is widely used for adsorption due to its large surface area. It can effectively adsorb various gases, including noble gases, from the atmosphere.

**Hint:** Think about the applications of charcoal in filtering and gas separation.

### Step 5: Conclusion
Based on the analysis, the correct answer is that noble gases are absorbed on **Charcoal**.

**Final Answer:** Noble gases are absorbed on Charcoal (Option 3).