Name the process in which a part of glass is reacted with hydrogen fluoride or hydrofluoric acid to decorate it.
A
Finishing
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B
Annealing of glass
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C
Etching of glass
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D
Shaping
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Solution
The correct option is C Etching of glass Hydrogen fluoride or hydrofluoric acid is a chemical that reacts with glass. With this acid, glass articles are decorated.