Why silver foil is used to decorate sweets ?
Mark ‘True’ if the statement is true and ‘False’ if it is false. (a) Generally, non-metals react with acids.(b) Sodium is a very reactive metal. (c) Copper displaces zinc from zinc sulphate solution. (d) Coal can be drawn into wires.
State whether the statement is true or false. "The image shows iron nail dipped in copper sulphate solution. Reaction takes place and some time later, iron sulphate is observed in the solution. In this reaction gold nail can also be used instead of iron."