Soilless agriculture is called _______. 

Which of the following peninsular rivers has the largest drainage basin? 

Which of the following rivers forms the largest river system of Rajasthan? 

Sundari trees are found in the ______.

In which type of Megalith (grave/memorial) were the stone pieces set in a circular shape around the grave?

As per the Census 2011, what was the literacy rate of Kerala? (Provide an approximate range.) 

The climatic conditions of thorn forests and scrubs are the most ideal for which of the following plant species?

When was the National New Road Policy formulated in the country?