Choose the correct alternative from the following :
Assertion (A) : When common salt is kept open, it absorbs moisture from the air.
Reason (R) : Common salt contains magnesium chloride.
A. Both A and R are true and R is the correct explanation of A.
B. Both A and R are true but R is NOT the correct explanation of A.
C. A is true but R is false.
D. A is false but R is true.
E. Both A and R are false
Answer: A . Both A and R are true and R is the correct explanation of A.
Magnesium chloride present in common salt is a deliquescent substance
i.e. it absorbs moisture from the air when kept in open.