Multiple choice

Pyrotechnics is the craft of making fireworks .The compound that has been used in pyrotechnics is

  1. ammonium dichromate

  2. ammonium iron(III) sulphate

  3. ammonium lauryl sulphate

  4. ammonium iron(II) sulphate
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A Correct answer
Explanation

Ammonium dichromate is an inorganic compound with the formula (NH4)2Cr2O7. It is a salt consisting of ammonium ions and dichromate ions. It has been used in pyrotechnics and in the early days of photography as well as in lithography, as a source of pure nitrogen in the laboratory, and as a catalyst.

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