Which of these describes a physical change? Choose the correct answer. You may only choose one. A. Wood logs are burned in a fire.

B. Coconut oil begins to crystallize after being placed in a freezer.

C. Milk left out of the refrigerator for a week starts to smell different.

D. Sodium hydroxide and hydrochloride acid are mixed in water to form a salt.

i think so it’s will be b yes i believe its

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.