Question

Milk of sulphur finds its application in:
A. Medicines
B. Photography
C. Head of match stick
D. Vulcanization

Answer 1

Hint: Milk of sulphur or precipitated sulphur is defined as sulphate of calcium. It can be obtained by addition of an acid to the pentasulphide of calcium solution.

Complete step by step solution:
Milk of sulphur, sometimes called as precipitated sulphur contains sulphate of calcium. Generally it consists of the precipitate obtained by the use of sulphuric acid instead of hydrochloric acid. When we precipitate pure sulphur then it is called milk of sulphur. It is used in the treatment of various skin disorders. Therefore, we can say that it finds its application in medicine, so option A is correct.

Additional Information:
We use the term sublimed sulphur to describe sulphur that is used as topical agent in lotions and creams. It is used for the treatment of skin conditions that require the use of scabicide (scabies skin parasites) and as a general anti parasitic.
The mixture containing sulphate of calcium is not called as milk of sulphur. Pure milk of sulphur is precipitated by sulphuric acid.

Note: From above we have learned that milk of sulphur finds application in medicine, but apart from medicine sometimes it is also used in preparing sulphur ointment. Sometimes the examiner may give both options for confusing us, so try to remember that it has its application in medicine as well as used for preparing sulphur ointment.