Short Answer Type Questions:
1. Give reason why:
(a) Copper metal is used for making electric wires.
(b) Graphite is used for making electrode in a cell.
(c) Sodium and Potassium are stored in kerosene.
(d) Copper cannot displace Zinc from its salt solution.
Answers
Answer:
a.beacause copper has a good conductor of an electricity b.beacause graphite is also good conductor. c.when sodium and potassium store in kerosene it can not burn. d.copper is less reactive than zink
Answer:a) Copper is used for making electric wires because it is a good conductor of electricity and it is highly electropositive metal.
b) Graphite is used for making electrodes in a cell because it is a good conductor of electricity.
c) Sodium and potassium are stored in kerosene because they are highly reactive to atmospheric air and form explosives reactions.
d) Copper cannot displace zinc from its salt solution because copper is placed below zinc in the reactivity series [i.e copper is less reactive than zinc].
Explanation: