Nick example sentences



Methane reacts with steam at 1273 K in the presence of nickel catalyst to form carbon monoxide and dihydrogen.This reaction is commonly used in the hydrogenation of vegetable oils using a nickel catalyst.Asia also has deposits of manganese, bauxite, nickel, zinc and copper.Special alloys of steel can be made by adding small amounts of other metals such as aluminium, nickel, and copper.It is a leading producer of gold, diamond, iron ore, tin and nickel.Iron-ore in north Sweden, copper and nickel deposits in Ontario, Canada, iron, nickel, chromites and platinum in South Africa are examples of minerals found in igneous and metamorphic rocks.For example, dodecane, a constituent of kerosene oil on heating to 973K in the presence of platinum, palladium or nickel gives a mixture of heptane and pentene.As we know that water is an excellent solvent, water soluble inorganic chemicals that include heavy metals such as cadmium, mercury, nickel etc constitute an important class of pollutants.About 98 per cent of the total crust of the earth is composed of eight elements like oxygen, silicon, aluminium, iron, calcium, sodium, potassium and magnesium (Table 1), and the rest is constituted by titanium, hydrogen, phosphorous, manganese, sulphur, carbon, nickel and other elements.Iron ore, nickel, gold, uranium and copper are mined in the Canadian Shield Region, coal in the Appalachians region.Minerals deposits of copper, lead, zinc, manganese and nickel are found in eastern Europe and European Russia.Dihydrogen gas adds to alkenes and alkynes in the presence of finely divided catalysts like platinum, palladium or nickel to form alkanes.Platinum and palladium catalyse the reaction at room temperature but relatively higher temperature and pressure are required with nickel catalysts.Unsaturated hydrocarbons add hydrogen in the presence of catalysts such as palladium or nickel to give saturated hydrocarbons.

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