Question

A tarnished copper vessel begins to shine when rubbed with lemon

Answer 1

Since lemon is a type of citrus extract, and rust is a base, so in case we rub the rusted copper vessel, the lemon's corrosive chops down the base and it winds up sparkly.

Lemon is acidic in nature in which fundamental layer is broken down and washes off effortlessly.

Answer 2

lemon is a type of citrus extract and rust is a base ,so in case we rub the rusted copper vessel ,the lemons corrosive Chops down the base and it winds up sparkly