Question 21 :
Which of the following groups of rivers have their source of origin in Tibet?
Question 22 :
Which of the following measures are effective for soil conservation in India?
Avoiding crop rotation
Encouraging the use of chemical fertilizers
Limiting shifting cultivation
Question 23 :
Which of the following crops needs maximum water per hectare?
Question 24 :
The watershed between India and Myanmar is formed by
Question 25 :
The originating in the Himalayan mountain complex consists of how many distinct drainage systems of the Indian Subcontinent?