Correct option is C
Silica Gel:
· Silica gel is a desiccant, meaning it absorbs moisture from its surroundings to keep products dry.
· It is commonly used in small packets to control humidity and prevent damage to products during storage or shipping.
· Silica gel is often treated with a moisture indicator that changes color based on the level of moisture absorbed.
Color Change:
· Typically, dry silica gel is blue due to the presence of cobalt chloride as an indicator.
· When the silica gel absorbs moisture, it changes color to pink, indicating that it has become saturated with water and may need to be regenerated (dried out) to restore its moisture-absorbing capacity.
