Question

In the given isobaric binary temperature-composition (T-X) phase diagram involving solids A and B, the fraction of melt remaining at point Q for a magma having initial composition P will be _______. (Round off to one decimal place)

Answer 1

Correct Answer: 0.5

Fraction of Melt Remaining at Point Q 

Step 1: Understanding the Phase Diagram

From the given phase diagram, we observe that point P lies at a composition between A and B. At point Q, the fraction of melt remaining is determined by the distance between point P and the solidus line.

Step 2: Determine the Fraction of Melt Remaining

The fraction of melt remaining at point Q for a magma with initial composition at point P is given as 0.5, according to the phase diagram.

Step 3: Final Answer

The fraction of melt remaining at point Q is: 0.5.