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Define the term - Extrusion
It is a metal working process that produces long lengths of uniform cross sectional area from a metal billet by causing the latter to flow under hydrostatic pressure through a restricted die or opening. It's mainly a hot working process; starting with cast billets and producing wrought sections and tubes in one stage. It has 3 key components container, die ram. A heated cylindrical billet is placed in container and forced out through a steel die by a plunger or ram. Mainly used for manufacturing rods, tubes (rectangular, circular and hollow forms).
Types of interferences - Atomic absorption spectrophotometry: Three types of interferences viz., chemical, spectral and physical interferences are encountered in AAS. These re
The diffraction of x-ray by a crystal gives 1st order ref at 14•12'' if lattice dist is 3.14 A• wht is the wavelength of x-ray
Q. What are the properties of liquids? Ans. Evaporation of Liquids When we place a liquid in an open container, it slowly disappears. If we heat a liquid it disappear
Q. Illustrate Nature of light as a particle? Ans. You have seen that when excited electrons return to the ground state they release packets of energy, called photons. Photons
Give the name of the molecular shape of each of the following. (1 mark each) 1) silicon tetraiodide
what is theory of indicators?
A solution contains an unknown amount of osmium at the µg/g level, or below. Chemically pure osmium (Os) may be separated from the solution, but the chemical yields are variable an
compound reacts with oxygen to form 2 oxide x and y. or analysis 1.535g of x yielded 1.365g of copper and 1.545g of y yielded 1.6 a.determine the chemical compound of x and y.b .
Molecular weight of orthophosphoric acid is M. Its equivalent weight is
Melting point - physical charterstics of monocarboxylic acids (a) The melting points of carboxylic acids do not change smoothly from one member to other member. (b) The melt
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