(d)- Classical smog is good for health but not photochemical smog.
What is a classical smog?
Classical smog is formed when there is high concentration of sulphur dioxide and particulate matter produced due to combustion of fuels. It occurs in cold and humid climate. It is also known as London smog or Sulphurous smog and causes dark brownish colour of atmosphere.
What is true about classical smog?
Classical smog is the smog that occurs in cold and humid climate and it contains compounds like sulphur dioxide, particulate matter that are compounds of reducing nature.
Which smog is more harmful?
Sulfurous smog (London smog)
The polluting particles mix with the cold air to form a thick fog that significantly worsens overall air quality.
What are the harmful effects of classical smog?
Environmental Chemistry. Give one harmful effect of classical smog. During respiration, sulphuric acid droplets are drawn into lungs, causing bronchitis and respiratory problems leading to death.
What causes classical smog?
Option A: Classical smog has smoke, fog and sulphur dioxide components and is found in humid conditions. They are present where there is a high concentration of particulate matter and sulphur dioxide is produced because of combustion of fuels.
Is classical smog reducing?
Classical smog is mixture of smoke, fog and sulphur dioxide. Chemically it is a reducing mixture.
Which statement is wrong for classical smog?
Classical smog is a mixture of smoke and fog. Classical smog is also known as London smog. Thus, the statement ‘London smog is a mixture of smoke and fog’ is true. Thus, option (B) is not correct.
Which of the following is wrong about classical smog?
Solution : Classical smog occurs in humid climate. It is a mixture of smoke, fog and `SO_(2)` which is reducing in nature. It is not the oxidizing smog.
What are the benefits of smog?
However, there may be some small advantages to air pollution:
- Air pollution helps plants grow. Guess what our factories and cars put in the air? Nitrogen.
- Air pollution slows climate change. Some pollutants we put out heat up the Earth, like carbon dioxide.
- Air pollution keeps polluted cities cooler in the summer.
What are the 2 main types of smog?
At least two distinct types of smog are recognized: sulfurous smog and photochemical smog. Sulfurous smog, which is also called “London smog,” results from a high concentration of sulfur oxides in the air and is caused by the use of sulfur-bearing fossil fuels, particularly coal.
What is the difference between classical smog and photochemical smog?
How is classical smog different from photochemical smog?
| Classical smog | Photochemical smog | |
|---|---|---|
| Occurrence | It occurs in a cool, humid climate. | It occurs in a dry, sunny climate. |
What air quality should you avoid?
For example, an AQI value of 50 represents good air quality with little or no potential to affect public health, while an AQI value over 300 represents air quality so hazardous that everyone may experience serious effects.
Why is classical smog called London smog?
From the words smoke and fog, the term is derived. The smog which is formed due to high concentration of sulphur dioxide and particulate matter which are generated due to fuel combustion, this type of smog is known as classical smog, also known as London smog or Sulphurous smog, is formed.
Is London smog classical smog?
Classical smog is also known as sulfurous smog or London smog. Sulfurous smog, which results from a high concentration of sulfur oxides in the air and is caused by the use of sulfur-bearing fossil fuels, particularly coal.
What were the effects of the Great Smog?
The Big Smoke Settles In
For five days, the Great Smog paralyzed London and crippled all transportation, except for the London Underground train system. Because of poor visibility, boat traffic on the River Thames came to a halt. Flights were grounded and trains cancelled.
What is photochemical and classical smog?
Classical smog occurs in a cool, humid climate. Its components include smoke, fog and sulphur dioxide. It is reducing in nature. Photochemical smog occurs in a dry, sunny climate. Its components are PAN, acrolein, ozone, formaldehyde, nitric oxide.
Is classical smog occurs in cool humid climate?
It is a mixture of smoke, fog and sulphur dioxide. Presence of SO2 makes it both acidic as well as reducing.
Why is smog yellow?
They found that adding a bit of nitrogen oxide, released in combustion engine car exhaust, resulted in particles that trapped some heat. Increasing the nitrogen oxides level, however, resulted in particles that held significantly more heat and caused the mix to turn yellowish brown.
Is lower air quality better?
The higher the AQI value, the greater the level of air pollution and the greater the health concern. For example, an AQI value of 50 or below represents good air quality, while an AQI value over 300 represents hazardous air quality.
Which smog is reducing?
classical smog
Photochemical smog occurs in warm dry and sunny climate. Photochemical smog is an oxidizing smog whereas classical smog is an reducing smog.