1Thousands of products are made with coal or coal by-products, including aspirins, soap, dyes, solvents, plastics, and fibers such as rayon or nylon. Coal is an important ingredient in production of products that require activated carbon, carbon fiber or silicon metal. Activated carbon is an essential ingredient in the production of air purification and water filters as well as kidney dialysis machines
2 coal gas was used for street lighting in London in 1810.
4 Ethanol blended with gasoline.
8Petroleum or crude oil is a fossil fuel.
9.remove impurities or unwanted elements from (a substance), typically as part of an industrial process.
10The Petroleum Conservation Research Association (PCRA) is an organization established in India in 1978, under the aegis of the Indian Ministry of Petroleum and Natural Gas, engaged in promoting energy efficiency in various sectors of the economy. It helps the government in proposing policies and strategies aimed at reducing India's dependency on oil, in order both to save money and to reduce the environmental impact of oil use.