How the colour changes when the gases after thermal decomposition of ferrous sulphate come in contact with an acidified solution of potassium dichromate?
A. Green to orange
B. Red to colourless
C. Orange to green
D. Blue to green
Answer:C
How the colour changes when the gases after thermal decomposition of ferrous sulphate come in contact with an acidified solution of potassium dichromate?
A. Green to orange B. Red to colourless C. Orange to green D. Blue to green