INDIAN GEOGRAPHY

MINERAL AND ENERGY RESOURCES IN INDIA

MINERAL AND ENERGY RESOURCES

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Which is the first step in coal formation?
A
peat
B
lignite
C
bituminous coal
D
anthracite coal
Explanation: 

Detailed explanation-1: -This is the first stage in the formation of coal. It is an organic substance which is formed due to the partial decomposition of dead matter. The partial decomposition is due to the accumulation of the matter underwater which cuts off the oxygen supply.

Detailed explanation-2: -Under the right conditions, peat transforms into coal through a process called carbonization. Carbonization takes place under incredible heat and pressure. About three meters (10 feet) of layered vegetation eventually compresses into a third of a meter (one foot) of coal!

Detailed explanation-3: -The precursor to coal is peat. Peat is a soft, organic material consisting of partly decayed plant and mineral matter. When peat is placed under high pressure and heat, it undergoes physical and chemical changes (coalification) to become coal.

Detailed explanation-4: -peat. …the first step in the formation of coal. With increasing depth of burial and increasing temperature, peat deposits are gradually changed to lignite.

Detailed explanation-5: -The “five stages” method divides the process of the spontaneous combustion of coal into five stages, including: the latent stage, heat accumulating stage, evaporation stage, active stage, and hypoxic stage.

There is 1 question to complete.