Match the following columns:

Column I (OM)	Column II (N Content %)
a. Compost	1. 0.50
b. FYM	2. 0.89
c. Night soil	3. 5.50
d. Bird guano	4. 7-8

A. a-1, b-2, c-3, d-4

B. a-3, b-4, c-1, d-2

C. a-2, b-1, c-3, d-4

D. a-4, b-3, c-2, d-1

Answer: Option C

Solution(By Examveda Team)

The compost contains 0.89% of nitrogen.

FYM is farmyard manure and its nitrogen content is 0.50%.

Night soil is nothing but human excreta which is used as fertilizer and it contains 5.5% of nitrogen approximately.

Bird Guano is the accumulated excrement of seabirds and bats, and is a highly effective fertilizer, it contains 7% - 8% of Nitrogen.