Samples of four metals A, B, C and D were taken and added to the following solution one by one. The results obtained have been tabulated as follows: Use the table above to answer the following questions about metals A, B,C and D : (1) Which is the most reactive metal?(2) What would you observe if B is added to a solution of copper (II) sulphate ? (3) Arrange the metals A, B, Cand D in the order decreasing reactivity .

Samples of four metals A, B, C and D were taken and added to the follo

1.	Samples of four metals A, B, C and D were taken and added to the following solution one by one. The results obtained have been tabulated as follows: Use the table above to answer the following questions about metals A, B,C and D : (1) Which is the most reactive metal?(2) What would you observe if B is added to a solution of copper (II) sulphate ? (3) Arrange the metals A, B, Cand D in the order decreasing reactivity .
Answer» Solution :(1) METAL B is the most reactive metal.(2) Blue colour of copper (II) sulphate solution disappears and reddish brown copper metal is deposited on the metal B. (3) Decreasing ORDER of reactivity is B > A > C > D.