• question_answer When $NaOH$ crystals are left in open air, they acquire a fluid layer around each crystal as [CPMT 1974] A) They start melting B) They absorb moisture from air C) They react with air to form a liquid compound D) They absorb $C{{O}_{2}}$ from air

$NaOH$is a deliquescent white crystalline solid. It absorbs moisture from the atmosphere.