For the given energy flow diagram, If the calorific value of coal is 4800 kcal/kg, the amount of coal needed annually is 7413 kg 1662 kg 3981 kg 2463 kg

2 kg of a coal sample was burnt in a bomb calorimeter. The heat liberated was estimated and found to be 14114 kcal. Calculate the calorific value of the coal sample.a.14114 kcal /kgb.7057 kcal/kgc.7057 cal/gd.14114 cal /g

Calculate the CV of a fuel sample of coal 0.5 g. Water equivalent of calorimeter 2000g. Increase in temperature =10 °C1 point40 kCal/kg40000 kcal/gm40k kCal/gm40k Cal/gm

If 75 g of a fuel produced 2000 J of energy on burning. Then what is its calorific valueA 2600 J/g B 266.67 J/g C 26.67 J/g D 2000 J/g

a-Calculate the quantity of heat necessary for this transformation? b-If this heat is provided by the combustion of coal, calculate the mass of coal used?

14. How much of the energy in burning coal reaches the consumer as electricity?