Which one of the following statements is not true?

Question

Question: Which one of the following statements is not true?

Options:

1.  Melting temperatures of silicate rocks increase with increased pressure.
2.  Melting temperatures of silicate rocks are lowered by small amounts of water.
3.  Basalt magmas in general have higher temperatures than rhyolite magmas.
4.  When magma reaches the surface, its dissolved gas content increases.

Answer 1

4. When magma reaches the surface, its dissolved gas content increases.

The false statement is "when magma reaches the surface, its dissolved gas content increases".