An acid base indicator is a dye that is:
a. always the same color
b. colorless
c. the same color in both acids and bases
d. one color in an acid and a different color in a base

The correct answer is Option d.

Explanation:

An indicator is defined as the substance which shows the presence of acid or a base in a solution. They change their color accordingly.

Acid-base indicators are usually weak acids or weak bases. They change their color in the solution with change in the pH.

For Example: Phenolphthalein is an acid-base indicator which remains colorless in acidic solution and changes its color to pink when added to basic solution.

Hence, the correct answer is Option d.

both adhesion and cohesion are attractions.

they are different in that adhesion is the force of attraction between the molecules of two different substances, whereas cohesion is the force of attraction between molecules of the same substance.

possible examples include capillary action, in which the adhesion between water and glass causes the water to rise in a narrow tube against the force of gravity.

because of hydrogen bonding, water is extremely cohesive.

this causes molecules on the surface of water to be drawn inward, which is why drops of water form beads on smooth surfaces.

hope this .