10 cm of 0.10 mol dm- aqueous iron (II) sulphate is titrated against 0.025 mol dm-3 aqueous potassium manganate (VII) in the presence of an excess of both hydrogen ion and
fluoride ions. It is found that exactly 10 cm of the manganate (VII) solution is required to
reach the end point. What is the oxidation number of the manganese at the end point.​

its going to be mutualism cuz they both benefit from the relationship.

~batmans wife dun dun

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.