Which types of magma has the highest viscosity?

Acidic magma

Explanation:

Viscosity simply refers to the resistance to flow. The magma is comprised of different minerals intermixed with various gases.

There are three main factors that determine the viscosity of the magma, namely-

The temperature of the magma Magma composition Presence of dissolved gases in the magma

The acidic magma has the highest viscosity, as this type of magma is comprised of more than 65% of silica content and are mixed with the dissolved gases such as CO₂, SO₂, H₂S, N₂, CH₄ and so on.