Question

Aqueous solution of raw sugar when passed over beds of animal charcoal, it becomes colourless. Pick the correct set of terminologies that can be used for the above example.

	Adsorbent	Adsorbate	Process
(1)	Solution of Sugar	Animal Charcoal	Soprtion
(2)	Animal Charcoal	Solution of Sugar	Absorption
(3)	Animal Charcoal	Colouring Substance	Adsorption
(4)	Colouring Substance	Animal Charcoal	Adsorption

• A. (1)
• B. (2)
• C. (3)
• D. (4)

Answer 1

The Correct Option is C

Let's break down the process step by step: 

1. Adorbent: The substance that has the ability to attract and hold other substances on its surface. In this case, it is Animal Charcoal.
2. Adsorbate: The substance that is attracted and held by the adorbent. Here, it is the Colouring substance present in the raw sugar solution.
3. Process: The process by which the adorbent attracts and holds the adsorbate is called Adsorption.

Why is option (C) correct?

• Animal Charcoal acts as the adorbent, attracting and holding the colouring substances.
• The colouring substances in the raw sugar solution are the adsorbates.
• The process of removing the colouring substances from the solution is called adsorption.

Why are the other options incorrect?

• Option (A): Sorption is a general term that includes both adsorption and absorption. It is not specific enough for this process.
• Option (B): The terms are reversed. Animal Charcoal should be the adorbent, not the adsorbate.
• Option (D): The terms are reversed. The colouring substance should be the adsorbate, not the adorbent.

Conclusion: The correct set of terminologies for the given example is Animal Charcoal (adorbent), Colouring substance (adsorbate), and Adsorption (process).

Answer 2

In the given process, the raw sugar solution (which is the adsorbate) is passed over animal charcoal (which acts as the adsorbent). The process is adsorption, where the colouring substances are removed from the solution and adhere to the surface of the animal charcoal.

- Animal Charcoal is the adsorbent.
- Colouring substance is the adsorbate.
- The process is adsorption because the colouring substance is being adsorbed on the surface of animal charcoal.

Thus, the correct answer is (C) Animal Charcoal, Colouring Substance, Adsorption.