Which one of the following statements about air is correct ?
Air is a compound.
Air is a mixture.
Air is an element.
Air always has more oxygen than nitrogen.
Answer is Right!
Answer is Wrong!
This question was previously asked in
UPSC CISF-AC-EXE – 2017
Air is composed of various gases such as nitrogen, oxygen, argon, carbon dioxide, and trace amounts of other gases, along with water vapour and particulate matter. These components are not chemically combined in fixed proportions but are simply mixed together. The composition of air can vary depending on factors like location and altitude. This characteristic defines it as a mixture.