A) Physical and reversible change
B) Physical and irreversible change
C) Chemical and reversible change
D) Chemical and irreversible change.
Correct Answer: D
Solution :
Metal (X), iron reacts with blue coloured solution of copper sulphate and forms a "hew substance (green coloured solution of iron sulphate) and cannot be converted back to the original solution. Thus, it is an irreversible and chemical change.
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