The type of rock if % of silica less than 45%.
A. Acidic
B. Basic
C. Ultra basic
D. All of these
Answer: Option B
A. Acidic
B. Basic
C. Ultra basic
D. All of these
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
Silica content of less than 45% is Ultra basic (also known as ultramafic).
Shahwali Kakar