Question

Q-6
convex lens & concave lens.
(A) Give scientific reasons:
Curd and citrus food should not be stored in Copper or Brass Vassels.
(B) What is neutralisation ? explain giving examples.​

Answer 1

Answer:

scientific reason why are acidic foods not stored in copper containers is that when acids come in contact with brass or copper they react with the copper elements and blue -green layer of substance on the inner walls of the container so they ruin all the food so we should never store acidis in brass or copper containers

Answer 2

Answer:

A) curd and citrus food contain acid. when these are kept in metal surfaces such as copper or brass vessel they react to form metal salt which may be poisonous in nature

B) the reaction between acid and base to form water and salt is called neutralisation.

example-

NaOH + Hcl = Nacl + H2O

HNO3+KOH = KNO3+H2O