Physics, asked by behaviour2471, 1 year ago

Which of the following is a pure substance?
a) Air
b) Distilled water
c) Steel
d) Brass

Answers

Answered by ArunSivaPrakash
1

Distilled water is a pure substance. (option b)

  • A pure substance is one that consists of a single type of molecule.
  • Air is a mixture of different gases such as Oxygen, Hydrogen, carbon dioxide, water vapors, etc.
  • Steel - alloy of iron and 2% carbon,1% manganese with small amounts of silicon, phosphorous, sulfur, and oxygen.
  • Brass - an alloy of zinc and copper.
  • Hence all these consist of more than 1 type of element or substance and are not pure.
  • Alloy is mostly a metallic substance consisting of two or more elements, either in the form of a compound or solution.

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