Question

8. Potassium chloride is added to water and stirred. A salt solution is obtained which is then
boiled leaving behind a residue-

c) is the change reversible or not reversible.
d] Are the composition and properties of the original substance altered.
e] Give a reason why the above experimentation would not be possible, if calcium carbonate
is taken in place of potassium chloride.
Give a reason why - Po
a) Heating a platinum wire is a reversible change but, heating a magnesium wire is an
irreversible change.
b] Addition of zinc nitrate to water is a physical change but, addition of zinc to dilute nitric
acid is a chemical change.
c) Rusting of iron is a chemical change but, magnetization of iron is a physical change.​

Answer 1

Answer:

the answer is not possible to write