What will occur if a block of copper metal is dropped into a beaker containing a solution of `1M ZnSO_(4)`?

What happens when a piece of sodium metal is dropped in water taken in a beaker ?

A 75 gm block of copper taken from a furnace is dropped into a 300 gm glass beaker containing 200 gm of water. The temperature of water rises from 12^@C to 27^@C . Calculate the temperature of furnace.

Explain the following chemical changes : An iron nail is dropped in a beaker containing acidified copper sulphate solution.

If a spoon of copper metal is placed in a solution of FeSO_(4) , what will be the correct observation ?

When a rod of copper is immersed in a solution of ZnSO_(4) zinc gets precipitated.