Igneous rocks are said to be acidic when they contain high proportion of ________
A. Iron
B. Magnesium
C. Silica
D. Aluminium
Answer: Option C
Solution(By Examveda Team)
When Igneous rocks contain high proportion of silica, they are acidic. Acid igneous rocks such as granite are less dense and have lighter colour than basic igneous rocks.This Question Belongs to Geography >> Lithosphere
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