If the pH of a solution is decreased from 9 to 8, it means that? the concentration of H+ increased by 10 fold and the concentration of OH- decreased by 10 fold the concentration of H+ decreased by 10 fold the concentration of H+ decreased by 10 fold and the OH- increased by 10 fold the concentration of H+ decreased by one fold the concentration of H+ increased by one fold the concentration of OH- increased by 10 fold

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.

i think tornado but not 100%