1.

Base should not be kept in active metal container.Why????

Answer» Because base will react with active metal to form hydrogen gas and salt
Because bases react with metal
Active metals often react with bases to form salts.For example:NaOH + Zn => NaOZn + H2Sodium hydroxide reacts with Zinc to form sodium zincate with liberation of H2 gas.
Because metals react with base to liberate hydrogen gas .


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