Question

Seema heated a mixture of iron fillings and sulphur in a hard glass test tube for sometime till a grayish black
product was formed. She cooled the test tube and added a few drops of carbon-di-sulphide and shake the contents
well. Which of the following observation made by her was correct ?
(a) The colour of the solution remains the same
(b) The solution turns blue
(c) The solution turns green
(d) The solution turns yellow

Answer 1

option (d) is correct