Question

20. A shiny brown coloured element
'X' on heating in air becomes black in
colour. The element 'X' and the black
coloured compound formed are:
a. Copper and copper sulphate
b. Carbon and charcoal
c. Copper and copper oxide
d. Zinc and zinc carbonate​

Answer 1

Answer:

Explanation:

C

Copper and copper oxide

Hope it helps.

Please mark ne as brainliest.

Answer 2

Answer:

The element X is copper and the black compound formed is copper oxide because copper reacts with oxygen to form copper oxide.

Cu + O2 ----> CuO

so, the correct option is c)