In a test-tube, hydrochloric acid is poured over a few zinc granules. – InterviewSolution

1.	In a test-tube, hydrochloric acid is poured over a few zinc granules. List two observations that suggest that a chemical reaction has occurred. 2HCl+ZnrarrZnCl_(2)+H
Answer» SOLUTION :(i) A COLOURLESS gas is EVOLVED . (II) Test-tube becomes HOT .

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