RRB RPF RPSF SI and CONS Model Papers 1 with solutions

© examsiri.com

Question : 80 of 120

Marks: +1, -0

Methane an air pollutant is produced ________.

by action of ultraviolet light on nitrogenous compounds.
as a by-product of manufacturing ammoniacal fertilizers
by burning of coal in insufficient air
by digestion of food by animals

Go to Question:

Prev Question

Next Question