
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 wavelength.
Which of the statements given above is/are correct?


Important Questions on World Geography

1. La Nina is characterized by unusually cold ocean temperature in the equatorial Indian ocean, whereas EI Nino is characterized by unusually warm ocean temperature in the equatorial Pacific Ocean.
2. El Nino has adverse effect on the South-West monsoon of India, but La Nina has no effect on monsoon climate.
Which of the statement(s) given above is/are correct?

The jet aircraft fly very easily and smoothly in the lower stratosphere. What could be the appropriate explanation?
1. There are no clouds or water vapor in the lower stratosphere.
2. There are no vertical winds in the lower stratosphere.
Which of the statements given above is/are correct?

In the context of global climate change, which of the following agricultural practices contributes to carbon sequestration or storage in the soil?
- Contour Bunding
- Relay Cropping
- Zero Tillage
Select the correct answer using the codes below:


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 codes given below:

Which one of the following is the characteristic climate of the Tropical Savannah Region?

