| Column I | Column II |
| (P) Ammonium hydroxide | (i) Spinach |
| (Q) Tartaric acid | (ii) Window cleaner |
| (R) Zinc carbonate | (iii) Tamarind |
| (S) Oxalic acid | (iv) Calamine |
A) (P) - (ii), (Q) - (iii), (R) - (iv), (S) - (i)
B) (P) - (iv), (Q) - (i), (R) - (ii), (S) - (iii)
C) (P) - (ii), (Q) - (iii), (R) - (i), (S) - (iv)
D) (P) - (iii), (Q) - (ii), (R) - (iv), (S) - (i)
Correct Answer: A
Solution :
Tartaric acid is present in tamarind. Oxalic acid is present in spinach. Window cleaners contain ammonium hydroxide and calamine is a basic solution containing zinc carbonate.
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