1.

A student added dil. HCZ to a test tube containing zinc granules and made the following observations. i) The zinc surface becomes dull and black ii) The gas evolved is burnt with a pop sound iii) The solution remains colourless The correct observations are A) i and ii B) i and iii C) ii and iii D) i, ii and iii

Answer»

D) i, ii and iii



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