What is colloid? What is aerosol? How do they pollute air? in 3 marks Class 9
Answers
Answer:
A colloid is a kind of solution in which the size of solute particles is intermediate between those in true solutions and those in suspensions. For Example: - Soap solution, Milk, Ink, Blood and solutions of synthetic detergents.
Aerosol: When particles of solid or liquid dispersed in gaseous medium, the mixture is known as Aerosol. For example – cloud, smog, smoke etc. ... Liquid Aerosol: When liquid particles are dispersed phase and gas is dispersing phase, the mixture is known as Liquid Aerosol. For example – fog, mist, hair spray, etc.
An aerosol is a collection of solid particles or liquid droplets dispersed in air. Examples include smoke, fog, sea spray and pollution particles from vehicles.
Answer:
What is colloid?
Ans:- A colloid is a mixture in which one substance of microscopically dispersed insoluble particles are suspended throughout another substance. However, some definitions specify that the particles must be dispersed in a liquid, and others extend the definition to include substances like aerosols and gels.
What is aerosol?
Ans:- An aerosol is a suspension of fine solid particles or liquid droplets in air or another gas. Aerosols can be natural or anthropogenic. Examples of natural aerosols are fog or mist, dust, forest exudates and geyser steam. Examples of anthropogenic aerosols are particulate air pollutants and smoke.
How do they pollute air?
Ans:- Car emissions, chemicals from factories, dust, pollen and mold spores may be suspended as particles. Ozone, a gas, is a major part of air pollution in cities. When ozone forms air pollution, it's also called smog. Some air pollutants are poisonous.
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