Question

An element 'X' reacts with oxygen to form an oxide which dissolve in water to form a solution that turns methyl-orange red. Identify 'X'.

(A) Sulphur
(B) Sodium
(C) Calcium
(D)Copper​

Answer 1

Answer:

d.

Explanation:

copper as metals turn methyle orange red

Answer 2

I think it's copper

hope this help