Which one of the following is produced by rain water action?

Which one of the following is a land-locked country?

Which one of the following statements characterize the anticyclones?
1. Anticyclones are low pressure systems.
2. They are characterized by divergent wind circulation.
3. They are indicative of dry weather conditions.
Select the correct answer using the code given below?

Physical factors responsible for soil erosion is / are:

The statements I and II are explanatory notes.
I. Multipurpose projects are built over the rivers to prevent soil erosion and floods.
II. Hirakud and Rihand are built in India.
Which option describes better about the above statements?

The water pollution in rivers is measured by the dissolved amount of:

Common property resources are also called:

 Indira Gandhi Canal Project is also known as:

Which is a joint venture of Punjab,Haryana and Rajasthan?