Amongst oil cakes, the highest nitrogen content is in

Solution (By Examveda Team)

Groundnut cake is a great fertilizer as it promotes the healthy growth of the plant. It provides a high yield with lush green and velvety leaves.
Groundnut cake contains about 7.3% of nitrogen content.
Castor cake has 4.3% of nitrogen content.
Coconut cake contains 3% of nitrogen content.