Question

Why coke is considered better fuel than coal?

Answer 1

coke is considered to be a better fuel than coal because of the following reasons:

(i) Coke has been higher calorific value than coal: So, coke produces more heat than coal on an equal mass basis.

(ii) Coke does not produce smoke on burning: Coke burns with an almost smokeless flame and does not produce smoke during burning.

Answer 2

Coke is considered a better fuel than coal because of its advantage of having fewer or lesser impurities as compared to that of coal.  

Explanation:

• Being a derived fuel coke has higher carbon content and it has high calorific value than coal which means coke produces more heat.
• It has lower ash and sulphur content which is typically the underlying reason behind its high price and demand in the market.  
• Upon heating, it burns out resulting in less smoke than coal resulting in a low contribution to pollution as compared to that of coal.  
• Upon burning it leaves no residue while coal leaves a number of residues that have an injurious effect to health and environment.