The reaction between iron nails and copper sulphate solution is (A) decomposition reaction

Iron nails become reddish brown in colour and solution becomes green in colour.

(b) and (d) are colloids and will show Tyndall Effect.

(a) When dilute sulphuric acid is poured on a copper plate, there will be evolution of hydrogen gas along with the formation of blue color crystals of copper sulphate.  CuSO4 +...

Iron nails become brownish in colour and the blue colour of copper sulphate solution fades. This is because iron displaces copper from copper sulphate solution and forms ferrous sulphate which...

The correct answer is (B) CuSO4

(A) reddish deposit  

(D) light green

The correct answer is (D) D

Aluminium sulphate is colourless and it does not undergo any change as iron does not react with it. Copper sulphate solution is blue which changes into green due to the...

(i) Hydrated copper sulphate – CuSO4.5H2O Anhydrous copper sulphate – CuSO4  Solutions  Activity : (a) Heat a few crystals of copper sulphate in a dry boiling tube. (b) Add 2 – 3 drops of water...