Aprocess stream contains 4 w salt and the rest water. this is prepared by passing a part of pure water stream through a saturator containing the salt. the solution leaving the saturator containing 20% wt, salt is mixed with the pure water bypassed to get to the process stream, what fraction of the pure water available is to be bypassed through the saturator?

answer is a

explanation:

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.