what is a smog alert

Smog is mixture of smoke and fog containing particulates. Two types of smog exist, classical or original smog and the more recent photochemical smog..

Smog is mixture of smoke and fog containing particulates. Two types of smog exist, classical or original smog and the more recent photochemical smog..

The word smog was used initially to describe 'smoke fog' prevalent in England, in early and middle of the last century. Coal was then widely used to heat homes and as an industrial fuel. London is famous for its smoke fog of 1952 when 4000 people died from its effects over a four-day per..

When pollutants like hydrocarbons and nitrogen oxides combine in the presence of sunlight, smog is formed. This is a mixture of gases and since it is formed by photochemical reactions, it is called the photochemical smog. The word 'smog' is derived from the two words-s..

When pollutants like hydrocarbons and nitrogen oxides combine in the presence of sunlight, smog is formed. This is a mixture of gases and since it is formed by photochemical reactions, it is called the photochemical smog. The word 'smog' is derived from the two words ..

Hydrocarbons in air by themselves alone cause no harmful effects. However, they undergo chemical reactions in the presence of sunlight and nitrogen oxides. They form photochemical oxidants leading to photochemical smog. This causes irritation in the eyes and lungs leading to respiratory ..

Coal is mainly elemental carbon with small amounts of hydrogen, oxygen, sulphur and nitrogen. On complete combustion of coal, carbon dioxide is the main product formed. This is non-toxic, but contributes to the green house effect if produced in excess. Small amounts of oxides of nitrogen and oxide..

It is caused by deficiency of thyroid hormones in adults. It is more common in women than in men. It is characterised by puffy appearance due to accumulation of fat in the subcutaneous tissue because of low metabolic rate and retarded oxidation. The patient lacks alertness, intelligence ..

Question: The poet says that as a young man he too was like the West wind, because he also was 1. wild, swift and proud 2. tame, swift and happy 3. soft, red and alert 4. quiet, quick and dangerous Answer: ..

Question: List the measures adopted to control pollution. Answer: Pollution can be controlled by adopting the following measures: Solid organic wastes such as garbage and faecal matter should be changed into compost Garbage and silt of drainage may also be used in sanitary land-fil..