Most impure band of coal, having friable, drill appearence called
A. Fusain
B. Ultrain
C. Clarain
D. Duvain
Answer: Option A
A. Fusain
B. Ultrain
C. Clarain
D. Duvain
Answer: Option A
On the basis of which content the igneous rocks are classified as acid rocks and basic rocks?
A. Magnetite
B. Hematite
C. Bauxite
D. Silica
Origin of Solar System divided in two groups, which are
A. Evolutionary and catastrophic
B. Nebula and gaseous tidal hypo
C. Jeansand Jeffires
D. A and B both
A. Attrition
B. Deflation
C. Denudation
D. Mantle
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