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Oil
Oil spill is a major problem in the oceans and seas. The oil tankers and offshore petroleum refineries cause oil leakage into the waters. This pollutes the waters. Oil floats on the water surface and prevents the atmospheric oxygen from mixing in the water. ..
Soaps and Detergents
Soaps or detergents are cleansing agents that are capable of reacting with water to dislodge these foreign particles from a solid surface (e.g. cloth or skin). Soaps have their origin in oils and fats present in the animal and plant kingdom and synthetic detergents find their s..
Addition of carbon dioxide to air
1. By the respiration of living organisms. 2. By the combustion of carbon present in carbon compounds, such as wood, coal, coke, petroleum oil, vegetable oil, alcohol etc. 3. By the decay of organic matter, like the dead bodies of animals and plants. 4. From chemical i..
Origin of coal and petroleum
Coal and petroleum have organic origin, being decomposed plant and animal matter buried deep inside the earth. Coal is mined like any other mineral. The chief coal producing countries in the world are China, U.S.A., U.S.S.R., U.K., Germany, Poland, Australia and India. In India, coal is ..
Sources of Hydrocarbons
Until the early years of the nineteenth century, only the plants and animals were the known sources of organic compounds. With the advent of the Industrial Revolution in Europe, fossil fuels like coal and petroleum gained prominence as the sources of organic compounds, particularly hydroc..
Question 7
Question: What direct value does a forest have for man? Answer: Forests contribute to the economic development of our country by providing goods and services to the people and industry. They are intimately linked with our culture and civilization. Forests are useful to us for the follow..
Uses of Forests
Forests provides timber for furniture and buildings Forests provides raw material for paper, board and plywood industry Forests provides fodder for cattle, sheep, goat and other animals Forests provides bamboo which is called poor man's timber Forests helps in balancing the ..
Radioactive Waste
Waste products from nuclear power stations etc. are becoming a serious problem. They should be put where the radiation can do no harm. Unfortunately, there is no way of stopping a radioactive nucleus from emitting radiation. Nuclear energy has some advantages over fossil fuel such as coal and ..
Simple Lipids
fig. 13.10 - Common Fatty Acids A fatty acid is described as unsaturated if one (mono) or more (poly) double bonds occur between the carbon atoms of the chain. The 18 carbon unsaturated fatty acids are oleic acid, linoleic acid and linolenic acid with one, two and three double bond respectively. Fa..
Uses of forests
Forests are intimately linked with our culture and civilization. Forests are useful to us in many ways: Forests provides timber for the furniture and building Forests provides raw material for paper, board and plywood industry Forests provides fodder for cattle, sheep, goat and other ..
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