Question

5) Igneous rocks are said to be
acidic, if they have high proportion
of
O Iron
O silica
O Aluminum
Magnesium​

Answer 1

Answer:

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Explanation:

O Iron

Answer 2

Explanation:

The acidic igneous rocks (commonly referred to as “acid” rocks and rarely as acidites) comprise those rocks, whatever their origin and whatever level of the crust in which they crystallize, that are sufficiently silica-rich to contain modal (actual) or normative (theoretical) quartz in quantities of about 10% or more.