Tag: solar energy

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

Kerosene is a hydrocarbon liquid which is highly combustible. Also known as lamp oil it is used as fuel in industry as well as households.

Method used for the formation of charcoal is thermal pyrolysis.It is a processes involved in charring of wood.

The traditional chulha provides a low thermal efficiency. The efficiency of the traditional chulhas is usually around $8-10$%

All are fuels except water

Firewood is a conventional source which is non-renewable.

Conventional resources are non-renewable resources. They cannot be replenished in foreseeable future.