Tag: solar energy and its applications

Water gas, coal gas, and producer gas are all gaseous fuels, whereas coke is a solid fuel.

Charcoal, lignite, and coke are solid carbon-based fuels derived from natural sources, whereas alcohol is a liquid fuel.

fuels like petrol and wood, electricity is cheaper and produce less toxic gas when it burn.
Option C

Coke is obtained from Coal.

Petroleum is a fossil fuel formed from the remains of ancient marine organisms that were buried under layers of sediment and subjected to high pressure and heat over millions of years. Coal is derived from land vegetation, while biogas is produced from organic waste.

Petrol is a product of petroleum obtained with the help of fractional distillation petroleum is a fossil fuel taken out from various depths of earth both on land and see shore. 

Natural gas is formed by the anaerobic decomposition of organic matter, such as plant material, trapped under water or sediment. This process occurs deep underground over long periods.

Natural gas, petroleum, and uranium are non-renewable energy sources typically extracted from the earth. Wood is a renewable biomass source, making it the odd one out in this context.

When $1\ kg$ of coal is burnt the energy released is $30\ MJ ( = 3\times 10^{7}J)$.

Fuels formed under the earth by the decomposition of organic matter are called fossil fuels