Question

2. (a) Define the calorific value of a fuel.
(b) "The calorific value of LPG is 55000 kj/kg". What does it mean?​

Answer 1

Explanation:

1). Calorific value is the amount of energy released or produced when 1 kg of fuel burns or any other substance is burnt in the presence of oxygen and the products of combustion are cooled to STP. Its SI unit is kJ/kg.

2). The calorific value of LPG is 55000KJ/Kg means when 1Kg of LPG is burned completely then 55000 KJ of heat energy is produced. ... This means that burning of a given amount of LPG will produce much more heat than burning the same amount of cow-dung cakes or coal.

Answer 2

Explanation:

a)Calorific value is the amount of energy released or produced when 1 kg of fuel burns or any other substance is burnt in the presence of oxygen and the products of combustion are cooled to STP. Its SI unit is kJ/kg.

b)The calorific value of LPG is 55000KJ/Kg means when 1Kg of LPG is burned completely then 55000 KJ of heat energy is produced. ... This means that burning of a given amount of LPG will produce much more heat than burning the same amount of cow-dung cakes or coal.