Question

From marshy places, methane gas is liberated due to:
$A.$ Degradation of biomass
$B.$ Oxidation of biomass
$C.$ Burning of biomass
$D.$Reduction of Biomass

Answer 1

Methane gas is also called Marsh gas. A marshy place is a type of wetland, an area of land where water covers ground for a long period of time. Marshes are dominated by green plant such as grasses and sedges

Complete step by step answer:
From marshy places the methane gas is produced when vegetation decomposes in water. So it’s a decomposition product of organic matter. In marshy places there is more water on the land so here methane gas is liberated due to degradation of biomass. Marsh gas is formed by the bacterial decomposition of plant and animal material.

So, the correct option is $A.$

Additional information:
Methane is a colorless and odourless gas that occurs abundantly in nature as a product of certain human activities. Its chemical formula is $C{H_4}$ .
Source of methane: Methane is produced by the anaerobic bacterial decomposition of vegetable matter under water. Generally wet lands are the major source of methane. The production and combustion of natural gas and coal are the major anthropogenic source of methane.
Uses of methane: Methane is an important source of hydrogen and some organic compound. It also yields carbon monoxide and hydrogen when reacting with steam at higher temperature. The most important use of methane is the manufacture of ammonia for fertilizers and explosives.

Note:
Methane is a greenhouse gas as it absorbs the sun’s energy to warm the atmosphere and the surface of the earth. If there are no greenhouse gases in the Earth then the temperature of the earth is too low. So, the greenhouse gas helps to make the earth warm.