Which type of rock can be considered as a biological sedimentary rock?

Question

Question

This question was previously asked in

SSC CGL 2022 Tier-I Official Paper (Held On : 05 Dec 2022 Shift 3)

Answer 1

The correct answer is limestone.

Key PointsSedimentary Rocks

Sedimentary rocks are formed by the accumulation of sediments.
Common sedimentary rocks include sandstone, limestone, and shale.
These rocks frequently start as sediments carried in rivers and deposited in lakes and oceans.
When secreted, the sediments lose water and become cemented to form rock.

Additional Information

Metamorphic Rock is one of the major groups of rock that make up the crust of the Earth; it consists of pre-existing rock mass in which new minerals or textures are formed at higher temperatures and greater pressures than those present on the Earth's surface.
- Marble is a metamorphic rock that forms when; limestone is subjected to the heat and pressure of metamorphism.
- A marble that contains impurities such as clay minerals, iron oxides, or bituminous material can be bluish, gray, pink, yellow, or black in color.
- As metamorphism progresses, the crystals grow larger and become easily recognizable as interlocking crystals of calcite.
- Some other examples of metamorphic rocks are gneiss, slate, marble, schist, and quartzite.

Igneous Rock. Igneous rock is a term used for a rock formed when molten rock cools and hardens. Extrusive, or volcanic, igneous rock cools on the surface as lava. Some examples of igneous rocks are granite, gabbro, and basalt.