Answer:
Carbonate rocks
Explanation:
The acid test is usually performed by the geologists. It is done by pouring a few drops of dilute hydrochloric acid (HCl) on a rock sample (mineral sample). While doing this, if some bubbles of Carbon dioxide gas (CO₂) is released then it indicates that the sample is a Carbonate rock or mineral. These minerals can be calcite, dolomite, or any one of them.
Some of the rocks comprised of this Carbonate minerals are Limestone and dolomite.
Thus, this acid test is very important in the field to identify if a rock is carbonate or not.
