Question

4. Which fuel from the given below has the highest calorific value (a) Cow dung cakes (b) Wood (c) Coal (d) Methane​

Answer 1

Explanation:

Which fuel from the given below has the highest calorific value ?

(a) Cow dung cakes

Answer 2

The correct option is (d) Methane​

• It is the total quantity of heat energy generated by full combustion of one kilogram of fuel. By condensing heat contained in water vapour, various procedures may be employed to recover the amount of heat contained in it.
• Among the given options the highest calorific value is of Methane as -

1. Cow dung Cakes - It is between 6,000-8,000 (kJ/kg)
2. Wood -  It is between 17,000-22,000  (kJ/kg)
3. Coal - It is between 25,000-33,000  (kJ/kg)
4. Methane - It is generally 50,000 (kJ/kg)

• Thus, methane has the highest value.