6. In the rock, which mineral melts first (at the lowest temperature like the ice chips) ? quartz potassium feldspar amphibole

In the rock, Quartz will melts first at the lowest temperature like the ice chips. Answer: Option A

Explanation:

Quartz would be the first mineral to melt in a rock if it is present in the rock as the rock is heated up. Whenever heat is provided to a rock, rock starts melting and the minerals which form the composition of that rock start melting but at different temperatures but the first mineral to melt in a rock would be quartz if present in the rock and the last one to melt would be olivine (if present in the rock).