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

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