Practicing Success
Which of the following is not a mixture? |
Blood Air Soil Methane |
Methane |
The correct answer is option 4. Methane. Letus break down each substance to determine whether it is a mixture or not: (b) Air: Air is a mixture. It is a gaseous combination of nitrogen, oxygen, carbon dioxide, and trace gases. Despite being a mixture, air is homogeneous, with a relatively uniform composition and properties throughout. (c) Soil: Soil is a mixture. It is a complex combination of minerals, organic matter, water, and air. Soil exhibits heterogeneity, with different regions having varying compositions and properties. (d) Methane: Methane is not a mixture. Methane is a simple chemical compound with a molecular formula of CH₄. It consists of carbon and hydrogen atoms bonded together in a specific ratio. Unlike mixtures, which involve the physical combination of different substances, methane is a pure compound. Mixtures: Blood (a), Air (b), and Soil (c) Not a mixture: Methane (d) |