GENERAL KNOWLEDGE

GK

GENERAL SCIENCE

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
The property of a substance to absorb moisture from the air on exposure is called-
A
Desiccation
B
Deliquescene
C
Osmosis
D
Efflorescence
Explanation: 

Detailed explanation-1: -deliquescence, the process by which a substance absorbs moisture from the atmosphere until it dissolves in the absorbed water and forms a solution. Deliquescence occurs when the vapour pressure of the solution that is formed is less than the partial pressure of water vapour in the air.

Detailed explanation-2: -Deliquescent substances are referred to known as those substances which absorbs moisture from the surrounding and dissolves themselves with the moisture or water to form a solution.

Detailed explanation-3: -Deliquescent substances, when exposed to atmosphere at ordinary temperatures, absorb moisture from atmospheric air. They become moist, lose their crystalline form and ultimately dissolve in the absorbed water, forming a saturated solution.

Detailed explanation-4: -Deliquescence is the absorption of moisture present in the air by salts at room temperature. These salts absorb moisture from atmosphere to form a saturated solution. For example, anhydrous calcium chloride (anhydrous CaCl2) absorbs moisture from air, becomes moist and forms a solution.

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