SCIENCE
PHYSICAL SCIENCES
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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homogeneous mixture
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heterogeneous mixture
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Either A or B
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None of the above
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Detailed explanation-1: -Despite the fact that air is a mixture of several gases, it is a homogeneous mixture since it seems uniform everywhere and its constituents are difficult to detect. Furthermore, simple mechanical methods are unable to separate distinct components of air. Hence, it is classified as a homogenous mixture.
Detailed explanation-2: -Pure air is a homogeneous mixture made primarily of nitrogen and oxygen. Its elements are not readily separated or distinguished from one another.
Detailed explanation-3: -The earth’s atmosphere is heterogeneous as it typically consists of 21% oxygen, 78% nitrogen, 0.93% argon and 0.03% CO2 with other gases making up the remaining percentage.
Detailed explanation-4: -Answer and Explanation: Air is not a heterogeneous mixture because it is a mixture of gaseous substances including nitrogen, carbon dioxide and oxygen. C) The vinegar and oil salad dressing is a heterogeneous mixture because it is made up of different layers of oil and sometimes salt as well as pepper.