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Burgers vector in screw dislocation
The Burgers vector, often signified by b, is a vector that shows the magnitude and direction of the lattice distortion of dislocation in a crystal lattice. The vector's magnitude and direction is best understood when the dislocation-bearing crystal structure is first visualized without the dislocation, that is, the perfect crystal structure.
Natural rubber: Natural rubber is obtained by making small incisions on the bark of certain types of trees, like "Have a brasiliensis" and "Ganynle". White milky liquid substance
Physical properties of Halo-arenes (i) Physical state: they are colourless liquid or crystalline solid. (ii) Solubility: Halo-arenes are not soluble with water, but dissolve
Stability of gem diols lies on the following factors: (a) Steric hindrance by +I group around α-carbon decreases the stability of gem diols. +I group decreases stability of gem
Cast iron is iron or a ferrous alloy which has been heated until it liquefies, and is then poured into a mould to solidify. It is usually made from pig iron. The alloy constituents
The frequency of a wave of light is 12x 10 14 s -1 . The wave number associated with this light is: (1) 5x10 -7 m (2) 4x 10 -8 cm -1
Properties and uses of D.D.T. (i) D.D.T. is approximately insoluble in water although it is moderately soluble in polar solvents. (ii) D.D.T. is a powerful insecticide. It i
Interval Scales An alternative approach is to rate liking on a proper interval scale or on a continuous line - scale, with only the ends of the scale being labeled " extreme
Rutherford's α particle scattering experiment proved that atom has: (1) Electrons (2 )Neutron (3) Nucleus (4 )Orbitals Ans: Nucleus
What is Frenkel defect A pair of one cation and one anion can be missing from an ionic crystal as shown in the following figure. Such a pair of vacant sites is called Schottky
Pig iron is cast iron with a very high carbon content: 4% by weight or more. Cast iron has at least 2% carbon by weight. Less than that, and it''s steel. Cast iron and pig iron are
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