List of top Geology Questions on Minerals and Rocks asked in GATE GG

Match the microstructures in Group-I with their characteristics in Group-II. Group-I Group-II

	Group-I		Group-II
P	Core-mantle	1	Radiating fibrous aggregate of K-feldspar with or without quartz
Q	Decussate	2	Large strained mineral grains surrounded by fine-grained, recrystallized grains
R	Spherulite	3	Inclusion trails in a porphyroblast curves into the matrix foliation by developing concave outward pattern
S	Millipede	4	Randomly oriented mineral grains dominated by crystal faces, such as in sheet silicates

Which one among the following is the least abundant sedimentary rock in the stratigraphic record?

Which one of the following sequence of index mineral correctly represents the order of increasing metamorphic grade during regional metamorphism of siliceous dolomitic limestones ?

Which of the following rock structure is/are fold (S) ?

Match the minerals in Group-I with the corresponding cleavage types in Group-II.

	Group-I		Group-II
P	Diopside	1	Cubic
Q	Galena	2	Octahedral
R	Calcite	3	Prismatic
S	Fluorite	4	Rhombohedral

Which one or more of the following minerals shows O:Si ratio of 4:1 in its silicate structure?

Which one of the following is an ultramafic rock?