The water tank was built during whose reign in the second city of Delhi to meet the water supply needs of the newly built fort at Siri and was originally known as Hauz-i-Alai after Khilji ?

Channels like Guls and Kuls located at :

The terms Khaidins and Johads related to :

Which one of the following was the first state in India which has made rooftop rainwater harvesting structure compulsory to all the houses across the state ?

Jhumming cultivation is practised in which of the above?

How many percentage of the crops given above are perfectly Kharif crops ?
(NOTE - each carries 10% )

Which is rich in both iron and calcium?

Which crop is grown in sandy soil and shallow black soil ?

Which crop grows well in old alluvial soil ?

Which of the following crops does NOT help in restoring soil fertility by fixing nitrogen from the air ?

Select the correct answer using code given below:

Which is an equatorial crop ?

Which crop grows well on well drained fertile soils ?

Which of the statements given above is/are correct?