Which of the following are examples of an exothermic chemical reaction? Choose all that apply

radiator heating the house

burning a piece of wood

freezing water into ice

mixing baking soda and vinegar

i would say b

explanation:

but i think i would need more information than that

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.

the correct answer would be b) volume versus temperature, because they are also directly proportional.