A small amount of a substance X is taken in a beaker and dilute hydrochloric acid is added to it slowly while stirring. The colour of the solution turns blue green.


Select the correct statements:
I. The substance X is copper oxide
II. The substance X is iron oxide
III. The blue green colour of the solution is due to the formation of copper chloride.
IV. The blue green colour of the solution is due to the formation of copper sulphate.

Options

A. Both I and II
B. Both II and III
C. Both I and IV
D. Both II and IV

Answer

A

Explanation

Explanation: When copper oxide reacts with dilute hydrochloric acid, the solution turns blue green due to the formation of copper chloride.
`CuO+2HCl" "CuCl_(2)+H_(2)O`