Consider the following statements regarding the structure of the atmosphere: I. The average height of the troposphere is higher nearer the poles than at the equator. II. The mesosphere contains the ozone layer. III. Radio waves transmitted from the Earth are reflected to the Earth by the ionosphere. IV. In the mesosphere, temperature decreases with an increase in altitude. Which of the statements given above are correct?

Consider the following statements related to water vapours: 1. It is a variable gas in the atmosphere, which decreases with altitude 2. In the dry and cold areas of desert and polar regions, it may b…

Consider the following statements: Statement-I: Thickness of the troposphere at the equator is much greater as compared to poles. Statement-II: At the equator, heat is transported to great heights by…

A layer in the Earth’s atmosphere called Ionosphere facilitates radio communication. Why ? 1. The presence of ozone causes the reflection of radio waves to Earth. 2. Radio waves have a very long wave…

Consider the following statements - 1. The Troposphere contains almost all-weather phenomena 2. The stratosphere is mostly free of clouds and has the ozone layer. 3. The Mesosphere protects Earth by…

With reference to “water vapour”, which of the following statements is/are correct? 1. It is a gas, the amount of which decreases with altitude. 2. Its percentage is maximum at the poles. Select the…