Tag Archives | air

Write an essay on an Air-Flight

How excited I had been when my father called me to Delhi and advised the air-route. So I booked my passage with the Indian Airlines and presented myself punctually at their office van.

By |2011-01-12T13:01:01+00:00January 12, 2011|Essay|Comments Off on Write an essay on an Air-Flight

What are the important constituents of air ?

Air is a mixture of gases in varying amounts. It consists of 78% nitrogen, 21% oxygen, argon and other inert gases to the extent of about 1.0%. In addition, carbon dioxide is another important constituent of the atmosphere which varies in amount from 0.1% to 0.3%.

By |2011-01-07T17:20:59+00:00January 7, 2011|Environment|Comments Off on What are the important constituents of air ?

Write 4 paragraphs on air pollution

Air pollution affects a far larger number of people than does water or land pollution. Air is a great leveller which does not distinguish between people. We all breath the same air; and wind disperses it to every nook and corner.

By |2011-01-07T16:59:19+00:00January 7, 2011|Paragraphs|Comments Off on Write 4 paragraphs on air pollution

Write a paragraph on air pollution

Unfortunately, most of the air we breathe is not pure. It contains harmful substances called pollutants which cause air pollution. Air pollution is one of the major problems of the world. Air pollution can be reduced by planting more trees.

By |2011-01-07T12:21:35+00:00January 7, 2011|Chemistry|Comments Off on Write a paragraph on air pollution

What are the various sources and types of Air Pollution ?

As a result of removal of natural vegetation, industrialization and increase in the number of automobiles, the air over big cities is heavily contaminated with dust, smoke and poisonous gases like carbon monoxide, sulphur dioxide and oxides of nitrogen.

By |2011-01-03T09:17:05+00:00January 3, 2011|Environment|Comments Off on What are the various sources and types of Air Pollution ?

What is the composition of air ?

Air is one of the most important natural resources. Air is necessary for all living organisms for their respiratory process. The organisms which live on the land (called terrestrial organisms) get oxygen needed for respiration from the air. A healthy man breaths 22000 times a day and takes in about 16 kg of air.

By |2011-01-01T10:16:17+00:00January 1, 2011|Chemistry|Comments Off on What is the composition of air ?

What is the role of oxygen present in the air ?

The presence of oxygen in the atmosphere is also harmful. For example, corrosion of metals is caused by oxygen. Slow destruction of metals particularly of iron causes a huge financial loss to the society. Oxygen also causes slow degradation of oils and fats.

By |2011-01-01T10:12:53+00:00January 1, 2011|Chemistry|Comments Off on What is the role of oxygen present in the air ?
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