Question

Match List-I with List-II

List-I (Type of stain)	List-II (Chemical used for stain removal)
(A) Blood	(I) Methylated spirit
(B) Tea/Coffee	(II) Javelle water
(C) Lipstick	(III) Ammonia
(D) Curry	(IV) Borax

Choose the correct answer from the options given below:

• (A) - (I), (B) - (II), (C) - (III), (D) - (IV)
• (A) - (II), (B) - (I), (C) - (III), (D) - (IV)
• (A) - (I), (B) - (II), (C) - (IV), (D) - (III)
• (A) - (III), (B) - (IV), (C) - (I), (D) - (II)

Hint:

For stain removal questions, categorize the stain first: is it greasy (lipstick), protein-based (blood), tannin (tea), or dye (curry)? Then match it to the agent's function: solvent, alkali, acid, or bleach.

Answer 1

The Correct Option is D

Step 1: Understanding the Concept:
This question requires matching different types of stains with the appropriate chemical agent for removal. Different stains require different chemical actions (e.g., solvents for greasy stains, alkalis for protein stains, bleaching for dye stains).
Step 2: Detailed Explanation and Matching:
Let's find the most definite matches first.


(C) Lipstick: Lipstick is a combination of wax, oil (grease), and pigments. It requires a solvent to dissolve it. (I) Methylated spirit is an excellent solvent for such stains. So, C -> I is a very strong match.
(A) Blood: Blood is a protein-based stain. For old, set-in bloodstains, a weak alkali is used to break down the protein. (III) Ammonia is a weak alkali commonly recommended for this purpose (after soaking in cold water). So, A -> III is a strong match.
With C->I and A->III, we can check the options. Only option (4) contains both of these pairings. Let's verify the remaining matches in option (4).

(B) Tea/Coffee: These are tannin stains. A mild alkali like (IV) Borax is a classic and effective home remedy for removing them. So, B -> IV is a correct match.
(D) Curry: Curry stains are primarily from turmeric, which is a potent natural dye. They often require a bleaching agent for complete removal, especially on light-colored fabrics. (II) Javelle water is a solution of sodium hypochlorite, a strong bleach. So, D -> II is a plausible match for treating stubborn curry stains on suitable materials (like white cotton).
Step 3: Final Answer:
All the pairings in option (4) are correct and logical for stain removal. The correct sequence is (A) - (III), (B) - (IV), (C) - (I), (D) - (II).