Assertion (A) : When common salt is kept open, it absorbs moisture from the air .
Reason (R) : Common salt contains magnesium chloride .
Options Are Given In The Image...
What Is The Correct Option ?
Solution
Common salt contains sodium chloride which itself does not absorb moisture from atmosphere but also contains magnesium chloride as an impurity. Magnesium chloride absorbs moisture from atmosphere, become moist, lose its crystalline from, and ultimately dissolved in the absorbed water, forming a saturated solution. This property is called deliquescency.
Hence, the correct answer is option (a).
Common salt contains sodium chloride which itself does not absorb moisture from atmosphere but also contains magnesium chloride as an impurity. Magnesium chloride absorbs moisture from atmosphere, become moist, lose its crystalline from, and ultimately dissolved in the absorbed water, forming a saturated solution. This property is called deliquescency.
Hence, the correct answer is option (a).