Half life of U238 is
A. 11900 my
B. 4500 my
C. 4700 my
D. 21900 my
Answer: Option B
A. 11900 my
B. 4500 my
C. 4700 my
D. 21900 my
Answer: Option B
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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