A student is asked to draw the college building on a piece of glass. H – InterviewSolution

1.	A student is asked to draw the college building on a piece of glass. He would use :A. Hydrochloric acidB. Hydrofluoric acidC. Hydrobromic acidD. Hydroiodic acid.
Answer» Correct Answer - B HF dissolves glass `SiO_(2) + 4HF rarr SiF_(4) + 2H_(2)O` `SiF_(4) + 2HF rarr H_(2)SiF_(6)`

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