Which substance cannot be broken down by a chemical change? O Glucose
O Bismuth
O Ammonia
O Methane​

the correct answer would be d. hope this !

so what is the problem with your lab report and whats the subject of the lab report? i will you

on passing the small ampere of electric current through the tube made of ar and hg of cfl generates uv rays which excites the fluorescent and thus emits the high radiation by consumption of just 5- 12 w in comparison to incandescent light which requires more power such as around 40 - 55 w to lighten.

moreover the life span of fluorescent or cfl is around 8000 h whereas the life span of incandescent is around 1200 h

hence, the building installed with incandescent lights bears more electricity bill.