Question 3:
_______ is the process of absorption of moisture from air.
[RRB NTPC 19th April 2016 Shift 1]
A. Deliquescence
B. Capillary action
C. Absorption
D. Osmosis
Answer:
The correct answer is A. Deliquescence.
Detailed Solution
- Deliquescence is the process where certain substances absorb moisture from the air until they dissolve in the absorbed water and form a solution.
Example:
- Table salt (NaCl) is a common example of a substance that can show deliquescence in very humid conditions. It absorbs water from the air and becomes wet or turns into a liquid over time.
Other Options:
- Capillary action: This is the ability of a liquid to flow in narrow spaces, like water moving up a thin tube or through soil.
- Absorption: This is when a substance takes in another substance, like a sponge soaking up water.
- Osmosis: The movement of water across a membrane from an area of low solute concentration to an area of high solute concentration.
Therefore, deliquescence is the correct term for the process of absorbing moisture from the air.
