Question

Write observations-[4]a.When a strip of Magnesium is heatedb.Raisins are kept in hypotonic solutionc.Zinc is added to dilute sulphuric acidd.Crystals of hydrated Copper Sulphate is gently heated

Answer 1

Answer:

(a) Chemical reaction of iron nail with copper sulphate solution in water. Iron displaces copper ions from an aqueous solution of copper sulphate. ... In this reaction, metallic iron is converted into ferrous ion (Fe2+) and cupric ion (Cu2 +) is converted into metallic copper. Fe (s) + Cu2 + (aq) —→ Fe2+ (aq) + Cu (s).

Answer 2

Magnesium is an important mineral, playing a role in over 300 enzyme reactions in the human body. Its many functions include helping with muscle and nerve function, regulating blood pressure, and supporting the immune system.