Multiple choice

Which of the following combinations of ‘common name : chemical formula’ is not correct?

  1. Cementite : Fe3C

  2. Glauber’s salt : Na2SO4·10H2O

  3. Fool’s gold : CuFeS2

  4. Green vitriol : CuSO4.5H2O

  5. Lunar caustic : AgNO3

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

Green vitrio l: FeSO4.7H2O Blue Vitriol : CuSO4.5H2O