Water is never ’pure’ in a chemical sense. It contains various kinds of impurities such as dust particles‚ dissolved gases‚ dissolved minerals‚ microscopic paints and animals‚ suspended impurities and bacteria. These are natural impurities derived from the atmosphere‚ catchments area and soil. Besides this‚ there are various other reasons by which water i9 polluted. The upland surface water derives its impurities from the catchments area‚ the sources being human habitations and animal keeping
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SOIL NAILING INTRODUCTION: Since its development in Europe in the early 1970s‚ soil nailing has become a widely accepted method of providing temporary and permanent earth support‚ underpinning and slope stabilization on many civil projects in the United States. In the early years‚ soil nailing was typically performed only on projects where specialty geotechnical contractors offered it as an alternate to other‚ conventional systems. More recently‚ soil nailing has been specified as the
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While the nature takes from 100 to 400 years to build one centimetre of top soil‚ man can and often does destroy it almost overnight by haphazard land use and improvident husbandry. Irrational methods of cultivation‚ deforestation‚ destruction of natural vegetation due to overgrazing by pasturing animals etc.‚ accelerate denudation. Besides‚ failure of rains‚ floods‚ depopulation and loss of cattle caused by famine and pestilence‚ disturbance caused by war and interference with or change
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ENGINEERING Department of Science and Humanities Sub. Code: HS1103 Sem/Year: I / I Sub. Name: Engg.Chemistry-I UNIT – I – WATER TREATMENT PROCESS: PART – A ( 2 Marks) 1. Define hardness of water. 2. Distinguish between carbonate hardness and noncarbonate hardness. 3. Draw the structure of EDTA. What happens when EDTA is added to hard water? 4. Define alkalinity. 5. Why is water softened before using in boiler? 6. What is meant by priming and foaming? How can they be prevented? 7. What is meant
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Soil properties Soil depth Soil texture Structure Colour Soil pH level Nutrients Dispersibility Soil organic matter and soil carbon sequestration Permeability and porosity Water holding capacity Soils vary in their suitability for specific purposes. For example‚ in Queensland a deep‚ fertile clay soil is suitable for intensive agriculture but a shallow‚ sandy soil is better suited to grazing and growing native trees. The suitability of a soil for a particular purpose can often be
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defined as soil. Soils come in an almost infinite variety of vertical structures and textures. Most soils are hundreds of years old and change very slowly. The work ability of the soil is the ease in which a soil can be cultivated and is determined by the soil texture. There are distinct layers of soil that are not always visible to eye but are made up of different horizons. O horizon/Humus is the decomposing plant matter. A Horizon/Topsoil is the mixed humus and leached mineral soil. E Horizon/
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Soil‚ which is one of the most important natural resources‚ is often less heeded. The importance of soil conservation is relatively less talked about as compared to the conservation of water and other natural resources. The almost-omnipresent soil is mostly taken for granted. Its omnipresence is ironically the reason behind us‚ human beings‚ taking it for a ride. We rarely even think of it as a natural resource that needs to be conserved‚ a part of the natural wealth that needs to be preserved.
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Classification of tropical‚ sub-tropical and acid zone fruit – area and production – scope and importance. Climate is of fundamental importance in the development of fruit cluster. Fruit has been a major food for mankind from time immemorial. Primitive man‚ the food habit was based mainly on fruits and also tubers which were found wild in the forests. In fact Adam who is considered to be the progenitor of man was said to have temptingly given the apple. In Ramanaya and Mahabaratha the cultivation
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Save the ailing Earth from vehicular pollution Environmental pollution is one of the most serious problems facing humanity and other life forms on our planet today. Since the rise of the advancement of awkward prepositional phrasing technology‚ pollution had already started its harm as well; awkward phrasing from the dropping of the first atomic bomb‚ which results to land‚ water‚ and air pollution‚ to the industrialized world that pollutes the entire earth. People had been attempting to stop
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INTRODUCTION Soil is the precious gift of nature to the mankind. All the plant family‚ animal kingdom and human society at large depend upon soil for their sustenance directly or indirectly. Ironically‚ soil is the most neglected commodity on the earth. Shifting cultivation on the hill slopes‚ non-adoption of soil conservation techniques‚ and over exploitation of land for crop production due to population stress‚ leads to enormous soil erosion. It will take hundreds of years to form an inch of soil‚ but
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