An unknown gas is likely to be carbon dioxide if it has which of the following
characteristics?
a
turns limewater milky
b. is flammable
c. is less dense than air
d. has a penetrating odor

An unknown gas is likely to be carbon dioxide if it turns limewater milky.

Option a

Calcium Hydroxide also known as lime is a sparingly soluble compound which when dissolved in water produces an alkaline solution known as lime water. When a gas such as carbon dioxide passes through this alkaline solution, it turns lime water milky due to the formation of an insoluble suspension of calcium carbonate . This can be understood by the following chemical reaction-

If an excess amount of gas is added in the solution, the following reaction takes place:

At this stage, the milkiness of the solution disappears since "calcium bicarbonate is soluble in water".

because of all the things that happen around the us, many people get into arguments which sadly could get physical, but we should actually make a change for that.

i think its 5049.

i hope this !