Q4. Mark ‘T’ if the statement is true and ‘F’ 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. ( )
(a) Generally, non-metals react with acids. (F)
-Non-metals do not react with acids (because they cannot donate an electron to hydrogen ion).
(b) Sodium is a very reactive metal. (T)
-Sodium reacts with water to liberate heat. That is why it is kept in kerosene.
(c) Copper displaces zinc from zinc sulphate solution. (F)
-Zinc is more reactive than copper. Hence, copper cannot displace zinc.
(d) Coal can be drawn into wires. (F)
- Coal is very brittle and breaks when force is applied.