UPSC CSE Prelims 2001 Q88 — Geography PYQ with Answer

Consider the following statements made about the sedimentary rocks:

I. Sedimentary rocks are formed at Earth’s surface by the hydrological system.

II. The formation of sedimentary rocks involves the weathering of pre-existing rocks.

III. Sedimentary rocks contain fossils.

IV. Sedimentary rocks typically occur in layers.

Which of these statements are correct?