35. NCERT Exemplar XII

 

When electricity is passed through the bulb, some amount of it is wasted in the form of heat. Compact Fluorescent Lamps (CFLs) is better than the electric bulbs because they are more efficientless efficientnot efficient in producing electricity. It contains a toxic mercury vapourtoxic sodium vapourtoxic vapour. Hence, it should be used properlystrored properlydisposed off properly if they get damaged.