Question

the substance having the highest calorific value is

Answer 1

i hope the answer is wood, as it has more calorfic value. hope u understood.....
      keep questioning..?

Answer 2

The substance that has the ‘highest calorific value’ is the hydrogen.  

The calorific value of a substance can be described as the ‘amount of heat’ that is present in a substance; this can be determined by the amount of complete heat energy that is got by the combustion of the entire material.  

The unit of calorific value is determined as joules per kilogram. The calculation of the calorific value majorly depends on the density of the substance.