General Physica...

Troposphere is the hottest part of the atmosphere because _________.

Atmospheric circulation in form of cells, consider the following
1. Formed due to disturbances in planetary pressure system
2. Vertical circulation cell

Consider the following statements:
(1) 99% of the water vapour in the atmosphere is concentrated in the lowest 16 km.
(2) 90% of the water vapour in the atmosphere is concentrated in the lowest 6 km.
Which of the statements given above is/are correct?

Ozone layer in the outer atmosphere helps us in ______________.

Which one of the four regions above Earth has smallest height (km)?

Arrange the following layers of atmosphere vertically from the surface of the Earth.
(1) Mesophere  (2) Troposphere
(3) Stratosphere (4) Thermosphere

Which one of the following statements about the atmosphere is correct?

Most of the phenomena related to weather take place in __________.

Choose the correct statements regarding igneous rocks:
(1) In terms of origin, there are two main classes of rocks.
(2) Volcanic rocks have big crystals.
(3) Basalt is a common plutonic rock.
(4) Granite, Diorite, Gabbro are plutonic rocks.
Select the correct answer using the codes given below.

What is the name given to an almost circular coral reef inside which there is a lagoon?