Geography

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 answer using the code given below:

With reference to the Earth’s atmosphere, which one of the following statements is correct?

Consider the following statements:
1. Jet streams occur in the Northern Hemisphere only.
2. Only some cyclones develop an eye.
3. The temperature inside the eye of a cyclone is nearly 10°C lesser than that of the
surroundings.
Which of the statements given above is/are correct?

Normally, the temperature decreases with the increase in height from the Earth’s surface, because: 1. The atmosphere can be heated upwards only from the Earth’s surface. 2. There is more moisture in the upper atmosphere. 3. The air is less dense in the upper atmosphere. Select the correct answer using the code given below:

A layer in the Earth’s atmosphere called the 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 wavelength.

The jet aircrafts fly very easily and smoothly in the lower stratosphere. What could be the appropriate explanation?
1. There are no clouds or water vapour in the lower stratosphere.
2. There are no vertical winds in the lower stratosphere.

Which one of the following reflects back more sunlight as compared to other three?

Consider the following statement:
1. The albedo of an object determines its visual brightness when viewed with reflected light.
2. The albedo of Mercury is much greater than the albedo of the Earth.

Diffusion of light in the atmosphere takes place due to: