Multiple choice

Which of the following do not contain sulphur?

  1. Cinnabar
  2. Gypsum
  3. Lithopone
  4. Talc

  1. Only 1 and 4

  2. Only 2 and 3

  3. Only 2, 3 and 4

  4. Only 2 and 4

  5. Only 3 and 4
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Gypsum is a very soft sulphate mineral composed of calcium sulphate dihydrate, with the chemical formula CaSO4•2H2O. Lithopone is a white pigment consisting of a mixture of barium sulphate (BaSO4) and zinc sulphide (ZnS). Lithopone is a white pigment consisting of a mixture of barium sulphate (BaSO4) and zinc sulphide (ZnS). Talc is a mineral composed of hydrated magnesium silicate with the chemical formula H2Mg3(SiO3)4 or Mg3Si4O10(OH)2.

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