Which rocks are formed by the alteration of pre-existing rocks by great heat or pressure?

(A) Igneous rocks
(B) Sedimentary rocks
(C) Metamorphic rocks
(D) Acid rocks

Q. The rock formed through the cooling and solidification of magma or lava is known as:
(A) Sedimentary rock
(B) Igneous rock
(C) Metamorphic rock
(D) Acid rocks

Q. Igneous rock is also known as:
(A) Magmatic rock
(B) Acid rock
(C) Basic rock
(D) Sedimentary rock

Answers:
1. (C) Metamorphic rocks
2. (B) Igneous rock
3. (A) Magmatic rock