Which one of the following is an igneous rock?
A)limestone
B)rhyolite
C)slate
D)quartz

Question

Quizplus · Accepted Answer

Rhyolite is an igneous rock that forms from the cooling and solidification of magma or lava. Limestone is a sedimentary rock formed from the accumulation of organic or inorganic sediments. Slate is a metamorphic rock that forms from the alteration of sedimentary rocks under heat and pressure. Quartz is a mineral often found in igneous, sedimentary, and metamorphic rocks, but it is not a rock itself. Therefore, the only correct choice that is an igneous rock is rhyolite (B).

Which One of the Following Is an Igneous Rock