Multiple choice

What will you observe when copper oxide is treated with concentrated hydrochloric acid?

  1. It decolourises

  2. Blue solution

  3. Insoluble in conc HCl

  4. Evolves a colourless and odourless gas

  5. Forms salt

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

When Copper oxide is treated with concentrated hydrochloric acid no gas is evolved but a blue solution is obtained.