Question

1. Name any 5 mixtures.

2. Why do we need to separate substances from mixtures?​

Answer 1

Explanation:

1. smoke and fog

dirt and water

sand, water, gravel

water and salt

oxygen and water

Answer 2

Answer:

1. Crude oil: A mixture of organic compounds (mainly hydrocarbons)
2. Seawater: A mixture of various salt and water.
3. Air: a mixture of various gases like oxygen, carbon dioxide, nitrogen, argon, neon, etc.
4. Ink: A mixture of coloured dyes.
5. Gunpowder: A mixture of sulfur, potassium nitrate and carbon.

Q2:- We need to separate different components of a mixture to separate the useful components from the non-useful or some harmful components. Examples: ... So we need to separate different components of a mixture to separate the useful components from the nonuseful for some harmful components.