What do you mean by acid rain?
Acid rain, or acid deposition, is a broad term that includes any form of precipitation with acidic components, such as sulfuric or nitric acid that fall to the ground from the atmosphere in wet or dry forms. This can include rain, snow, fog, hail or even dust that is acidic.
Is acid rain a type of air pollution?
Acid rain is a result of air pollution. Some of these gases (especially nitrogen oxides and sulphur dioxide) react with the tiny droplets of water in clouds to form sulphuric and nitric acids.
What is wet deposition and dry deposition?
Wet deposition is rain, sleet, snow, or fog that has become more acidic than normal. Dry deposition is another form of acid deposition, and this is when gases and dust particles become acidic. Both wet and dry deposition can be carried by the wind, sometimes for very long distances.
What are examples of dry deposition?
Dry Deposition. Gravitational sedimentation of particles during periods without precipitation. These particles include: aerosols, sea salts, particulate material, and adsorbed/reacted gases captured by vegetation.
What is causing acid deposition?
Acid rain is caused by a chemical reaction that begins when compounds like sulfur dioxide and nitrogen oxides are released into the air. In addition, the exhaust from cars, trucks, and buses releases nitrogen oxides and sulfur dioxide into the air. These pollutants cause acid rain.
How can we recover from acid deposition?
Lakes and rivers can have powdered limestone added to them to neutralise the pH of the water – this is called “liming”. Liming, however, is expensive and its effects are only temporary – it needs to be continued until acid rain stops.
Can the effects of acid rain be reversed?
Acid rain is detrimental to the environment, but its effects can be reversed. While action has been taken to clean up many of the emissions that cause it, the damage has already been done to many natural environments around the world.
How can acid precipitation affect humans?
Acid Rain Can Cause Health Problems in People Air pollution like sulfur dioxide and nitrogen oxides can cause respiratory diseases, or can make these diseases worse. Respiratory diseases like asthma or chronic bronchitis make it hard for people to breathe.
What is acid rain Class 9 short answer?
Acid rain is caused by a chemical reaction that begins when compounds such as sulphur dioxide and oxides of nitrogen are released into the air. These substances can rise very high up into the atmosphere, where they mix and react with water, oxygen, and other chemicals to form more acidic pollutants called acid rain.
What is acid rain Class 7 Ncert?
Answer: The rain containing excess of acids is called acid rain. It is very acidic because carbon dioxide, sulphur dioxide and nitrogen dioxide present in it which dissolve in rain drops to form carbonic acid, sulphuric acid and nitric acid respectively.
What is the pH of 3% sulfuric acid?
about 0.98