Multiple choice

Carbonaceous rocks which produce coal and oil belong to the category of rocks called

  1. gneiss

  2. igneous

  3. metamorphic

  4. sedimentary

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

A combustible compact black or dark-brown carbonaceous sedimentary rock formed from compaction of layers of partially decomposed vegetation and occurs in stratified sedimentary deposits.