Question

20. Fine-grained igneous rocks are likely to be A. inclusive B. extrusive C. intrusive D. exclusive E. preclusive are landforms formed by the extrusion of lava. A Oceans B. Waves C. Lakes D. Beaches E. Volcanoes

Answer 1

B. extrusive

Step-by-step explanation:

Extrusive igneous rocks -

The composition of these rocks are finely grained , as the during the process of crystallization , the minerals does not get enough time to crystallize .

As , these rocks are rapidly cooled , and during rapid cooling , the fine grained of rocks are formed .

In case of slow cooling , the rocks generally have , coarse grained .

Hence , the correct answer is B. extrusive .