Question

advantages and disadvantages of coal​

Answer 1

Answer:

Primary energy source. Coal supplies around 30% of the primary energy needs all over the world, generating 40% of electricity. ...

Coal mining jobs. ...

Inexpensive energy source. ...

Plenty of applications. ...

Independent of the weather. ...

Reduce dependence on oil.

The Disadvantages of Coal. Burning coal emits harmful waste such as carbon dioxide, sulphur dioxide, nitrogen oxides, sulphuric acids, arsenic and ash. ... Carbon dioxide emissions from the burning of fossil fuels now account for about 65 per cent of the extra carbon dioxide in our atmosphere.

Answer 2

Answer:

The advantages of coal are as follows :

• Coal is used as a source of power for running machines, trains, ships and dynamos.

• Coal is used for manufacturing iron and steel.

• Coal is used as a source of direct heat and energy for domestic purposes, in the potteries and for building materials like cement, burning of bricks and tiles and in iron and brass foundries, etc.

• A variety of chemicals such as ammonia, benzol, etc., are obtained as by-products from the gases which are given off when coal is burnt in a closed chamber to get hard coke or metallurgical coke.

Disadvantages of coal are as follows :

• Calorific value of coal found in India is low.

• Coal reserves are scattered in small amounts in India.

• Cost of production and transportation of coal is quite high.

• There are limited reserves of coal in India.

• Large scale pollution is caused at the site of mining and at the place of use.

Explanation: