Question

1. In which of the cases will a gas be given off?
a) Hydrochloric acid is added to sodium carbonate
b) Sulphuric acid is added to sodium hydroxide
c) Sulphuric acid is added to copper oxide
d) Hydrochloric acid is added to zinc oxide

Answer 1

Answer:

Option a I think ..........

Answer 2

Answer:

I think option D is the correct answer because when the hydrogen gas is liberated it puts off.