Question

What is Acid rain? How is it caused? Wha
- Explain the process of Crystallisation.​

Answer 1

Answer:

Acid rain is rain that is unusually acidic and highly corrosive in nature. It is rain with high levels of hydrogen ions (low pH). It may be defined as "rain water having pH less than 5.6". Acid rain can have harmful effects on plants, animals and humans.

Acid rain is caused by a chemical reaction that begins when compounds like sulfur dioxide and nitrogen oxides are released into the air. These substances can rise very high into the atmosphere, where they mix and react with water, oxygen, and other chemicals to form more acidic pollutants, known as acid rain.

Crystallization or crystallisation is the (natural or artificial) process by which a solid forms, where the atoms or molecules are highly organized into a structure known as a crystal. Some of the ways by which crystals form are precipitating from a solution, freezing, or more rarely deposition directly from a gas.

Answer 2

Answer:

Acid rain is caused by a chemical reaction that begins when compounds like sulfur dioxide and nitrogen oxides are released into the air. These substances can rise very high into the atmosphere, where they mix and react with water, oxygen, and other chemicals to form more acidic pollutants, known as acid rain.

crystallization. - the process of obtaining crystals from their solution is known as crystallization. it is an example of physical change