manganese iron

Manganese metal exists at the seabed, in the form of potato shaped nodules. These nodules are formed by some on-going biological processes. These nodules also contain small amounts of metals like, cobalt, copper, nickel, iron etc. An approximate composition of manganese..

The carbides in which carbon atoms occupy the interstitial space in the lattice of the host material are called interstitial carbides. Transition metals form interstitial carbides. Interstitial carbides have very high melting points and are very hard. Tungsten carbide (WC), carbides of chromium, h..

The nutrients required by plants for their healthy growth are 16 in number. They are carbon, hydrogen, oxygen, nitrogen, phosphorus, potassium, calcium, magnesium, sulphur, iron, manganese, copper, zinc, boron, molybdenum and chlorin..

(i) Quite a large number of similar elements could not be grouped into triads e.g. iron, manganese, nickel, cobalt, zinc and copper are similar elements but cannot be placed in the triads. (ii) It was possible that quite dissimilar elements could be grouped into triads. As Dobe..

The Bessemer converter is turned into a horizontal position and molten pig iron is poured into it. A blast of hot air is sent through the tuyeres. The converter is rotated so that it is vertical and hot air is blown continuously. In its upward travel through the converter, the air oxidi..

Minerals are inorganic nutrients. They include both metallic and non-metallic elements, which are taken by the body in the form of salts. There are 24 elements that are used in our body. They have various functions such as formation of tissues such as the bone, conduction of nerve impulses, formati..

The properties of steel depend on the carbon content and the heat treatment imparted to it. If the carbon content is low, the steel is soft and ductile and is called mild steel. As the carbon content increases, the ductility decreases, but the tensile strength increase upto 1.5% of carbon content. ..

The earth's crust contains several mineral ores such as haematite, pyrite, bauxite, dolomite, etc. The ores can be used refined into various metals like iron, copper, aluminium, zinc, manganese, etc. The earth's crust also contains many non - metallic ores such as gypsum, dolom..

Thermodynamically, Hydrogen peroxide is unstable as is shown by the following equation:..

Carbon content of steel is between 0.1 and 1.5%. This is intermediate between cast iron and wrought iron. The hardness of steel increases with increase in carbon content. Steel contains other elements like manganese, chromium, silicon, nickel, tungsten, vanadium,..