Answer:
(b) kcal/kg
Explanation:
CALORIFIC VALUE : Calorific value is measured in units of energy per unit substances its unit may be kcal/kg, cal/kg ,kcal/mol as the mole is also unit of measurements of substance present another unit may be cal/mol
So the unit of the calorific value will be kcal/kg because kcal is unit of energy and kg is unit of substance present so option (b) will be the correct option
