Substance X is used as window cleaner. It is basic in nature. Y is an acid found in grapes.
1
X - Potassium hydroxide, Y - Acetic acid
2
X - Ammonium hydroxide, Y - Oxalic acid
3
X - Ammonium hydroxide, Y - Tartaric acid
4
X - Potassium hydroxide, Y - Tartaric acid