Question

Match the coloumn

Column 1	Column 2
Aluminum	Does not displace hydrogen
Copper	Used in laboratory preparation of hydrogen
Potassium	Form amphoteric oxide
Zinc	Most reactive metal
Tritium	Radioactive in nature

Answer 1

a. Aluminum -Form amphoteric oxide

Aluminum form amphoteric oxide, because it can react with both base and acid to form corresponding salt and hydrogen.

b. Copper - Does not displace hydrogen

Copper lies under hydrogen in the reactive series. S o copper cannot displace hydrogen.

c. Potassium - Most reactive metal

Potassium is placed in the top of reactivity series. So it is highly reactive.

d. Zinc - Used in laboratory preparation of hydrogen

Zinc is used in laboratory preparation of hydrogen because it act as a catalyst and speed up the reaction.

e. Tritium-Radioactive in nature

Tritium is the radioactive isotope of hydrogen.

Coloumn A	Coloumn B
A. Aluminum	Form amphoteric oxide
B. Copper	Does not displace hydrogen
C. Potassium	Most reactive metal
D. Zinc	Used in laboratory preparation of hydrogen
E. Tritium	Radioactive in nature