The C : N ratio of saw dust is

A. 25 : 1

B. 225 : 1

C. 250 : 1

D. 125 : 1

Answer: Option B

Solution(By Examveda Team)

The carbon to nitrogen ratio is a ratio of the mass of carbon to the mass of nitrogen in a substance.
Sawdust is the by-product of woodworking operations composed of small chippings of wood.
The C : N ratio of saw dust is 225 : 1.