Question: What Is Smog Class 9?

What is smog in chemistry class 11?

Smog is a definite air pollutant.

It formed because of SO2, moisture and particulates in air.

It is formed due to Photochemical reaction between oxides of nitrogen and hydrocarbons present in the air in the presence of sunlight..

What are the 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.

Why is smog so dangerous?

Why is it harmful? When inhaled, smog irritates our airways, increasing our risk of serious heart and lung diseases. These health risks are why many cities monitor smog levels. On a high ozone-alert day, for example, your eyes and throat may burn, and you may cough and wheeze.

Can smog kill you?

Smog can lead to complications of preexisting health conditions, killing over a period of many years. Generally speaking, heavy exposure to smog may kill you earlier than you normally would die (takes years off your life), but this type of early death might not be attributed to air pollution.

What are the 10 causes of air pollution?

We have listed 10 common air pollution causes along with the effects that have serious implication on your health on a daily basis.The Burning of Fossil Fuels. … Industrial Emission. … Indoor Air Pollution. … Wildfires. … Microbial Decaying Process. … Transportation. … Open Burning of Garbage Waste. … Construction and Demolition.More items…•

What is the opposite of smog?

▲ Opposite of a heavy, musty, and unpleasant atmosphere, usually in a poorly-ventilated area. airiness. Noun.

What is smog in simple words?

: a fog made heavier and darker by smoke and chemical fumes also : a photochemical haze caused by the action of solar ultraviolet radiation on atmosphere polluted with hydrocarbons and oxides of nitrogen especially from automobile exhaust.

What is smog and how it is formed?

Photochemical smog is produced when sunlight reacts with nitrogen oxides and at least one volatile organic compound (VOC) in the atmosphere. Nitrogen oxides come from car exhaust, coal power plants, and factory emissions. … When sunlight hits these chemicals, they form airborne particles and ground-level ozone—or smog.

What is the full word for smog?

Smog is a type of intense air pollution. The word “smog” was coined in the early 20th century, and is a contraction (portmanteau) of the words smoke and fog to refer to smoky fog due to its opacity, and odor.

How is smog harmful to humans?

Smog can irritate your eyes, nose and throat. Or it can worsen existing heart and lung problems or perhaps cause lung cancer with regular long-term exposure. It also results in early death. Studies on ozone show that once it gets into your lungs, it can continue to cause damage even when you feel fine.

Who had coined the term smog?

physician Harold Des VeauxLondon, England, physician Harold Des Veaux coined the word smog in 1905 to describe natural fog contaminated by smoke: smoke + fog yielded smog.

How can smog be prevented?

On Days when High Particle Levels are Expected, Take these Extra Steps to Reduce Pollution:Reduce the number of trips you take in your car.Reduce or eliminate fireplace and wood stove use.Avoid burning leaves, trash, and other materials.Avoid using gas-powered lawn and garden equipment.

What does G stand for in smog?

Simple Measure of GobbledygookThe SMOG grade is a measure of readability that estimates the years of education needed to understand a piece of writing. SMOG is an acronym for “Simple Measure of Gobbledygook”. … The formula for calculating the SMOG grade was developed by G.

What are effects of smog?

When inhaled— even at very low levels— ozone can cause a number of respiratory health effects. In fact, breathing smoggy air can be hazardous because smog contains ozone, a pollutant that can harm our health when there are elevated levels in the air we breathe.

What are the main components of smog?

Smog, formed mainly above urban centres, is composed mainly of tropospheric ozone (O3); primary particulate matter such as pollen and dust; and secondary particulate matter such as sulphur oxides, volatile organic compounds, nitrogen oxides (NOx) and ammonia gas.