In adsorption, the substance which acculates on the surface of the other substance is termed as………………..

Answer

**Step-by-Step Solution:**

1. **Understanding Adsorption**: Adsorption is a process where molecules of a substance (the adsorbate) accumulate on the surface of another substance (the adsorbent).

2. **Identifying the Terms**: In the context of adsorption:
- The substance that accumulates on the surface is called the **adsorbate**.
- The surface on which the adsorption occurs is called the **adsorbent**.

3. **Example for Clarity**: For instance, if we consider anhydrous calcium chloride (CaCl₂) as the adsorbent, it can adsorb water (H₂O) from the environment. In this case:
- **Adsorbent**: Anhydrous calcium chloride (CaCl₂)
- **Adsorbate**: Water (H₂O)

4. **Final Answer**: Therefore, in adsorption, the substance which accumulates on the surface of the other substance is termed as **adsorbate**.