Solid component of the earth consisting of soil, rock and mountains is called:
A) Hydrosphere
B) Lithosphere
C) Atmosphere
D) Biosphere

Hint: The earth consists of three main layers. The solid outer layer of Earth is called the crust. Below the crust, there is a layer of very hot solid rock called the mantle Below the mantle, there is a core. It is divided into the outer core which is a liquid mix of iron and nickel, the inner core is solid metal.

Complete answer:
The crust and uppermost mantle which consists of the hard and rigid outer layer of the earth is called Lithosphere. The earth is divided into four main subsystems called 'spheres'. They are lithosphere, hydrosphere, biosphere and atmosphere. Human beings live in the biosphere.

Let us analyze the given options
A) Option A is not correct because the hydrosphere is the water part of the earth which includes water in liquid form, ice in solid form and water vapour in gas form. It is important as it sustains life forms.
B) Option B is correct because the lithosphere consists of the soil, rock and mountain part of the earth
C) Option C is not correct because the atmosphere consists of a layer that is made of several gases. Without atmosphere life on earth will not be possible.
D) Option D is not correct as the biosphere is the layer wherein life exists. It contains all living things.

Note:
-The lithosphere is 100 km thick.
-They are made up of minerals that contain iron and magnesium.
-The lithosphere is found below the atmosphere.
- The lithosphere plays an important role in our life as it provides us with forests, lands for agriculture and human settlements