Question

Name the products formed when coal burns in air.

Answer 1

There are three elements in coal that combine with oxygen in the air duing the combustion process. The most important element is carbon. This makes up about 30% to 60% of the substance. Hydrogen makes up about 1% to 3% and Sulphur, 0.3% to 3%.

The other elements found in coal are nitrogen, which can make up about 1% to 2% of the substance, and oxygen, 5 % to 12%. Oxygen is also used up in the combustion process. The exact amounts of each element depends on the type and rank of coal, how the coal was formed millions of years ago and the location or mines from which the coal is sourced.

Answer 2

Answer:

Products formed when coal burns in air are Sulphur dioxide and Nitrogen dioxide

Explanation:

Coal contain some amount of Sulphur dioxide and Nitrogen dioxide so when the fuel burnt then it will produce Sulphur dioxide and Nitrogen dioxide.