The organic matter present in _____ kind of rocks is the origin of the fossil fuels.
Igneous rock
Metamorphic rock
Sedimentary rock
None of these
Source of fossil fuels are organic matter trapped in sedimentary rock. This matter can be animal carcass and burried trees.
Tick the correct answer.
(i) The rock which is made up of molten magma is
(a) Igneous
(b) Sedimentary
(c) Metamorphic
(ii) The innermost layer of the Earth is
(a) Crust
(b) Core
(c) Mantle
(iii) Gold, petroleum and coal are examples of
(a) Rocks
(b) Minerals
(c) Fossils
(iv) Rocks which contain fossils are
(a) Sedimentary rocks
(b) Metamorphic rocks
(c) Igneous rocks
(v) The thinnest layer of the Earth is
(b) Mantle
(c) Core
Consider the following statements 1. Igneous rocks are the oldest rocks, while metamorphic are being derivative of igneous rocks and sedimentary rocks. 2. Resistance to weathering and erosion is less to metamorphic rocks compared to igneous rocks 3. Tendency to react with acids is higher to metamorphic rocks when compared to igneous rocks. Which of the above statement(s) is/are correct?