Section A
Q1. Describe the following in brief with diagrams, wherever necessary :
(a) Crystal defects
(b) Interference phenomenon in Petrological microscope
(c) Siderophile and Chalcophile elements
(d) Eu-anomaly and its significance
(e) Rapakivi texture
(f) Congruent and Incongruent melting
(g) Paired metamorphic belt
(h) Hornfelsic texture and its implications
(i) Difference between Seismic and Petrological Moho
(j) Kerguelen hotspot