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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).
what are the subatomic particles present in an atom?
Which of the following is always a whole number : (1) Atomic weight (2) Atomic radii (3) Equivalent weight (4) Atomic number Ans: Atomic number
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
About vbt
what are the chemical properties of lactic acid?
Ortho, meta and para 1. Ortho (or 1, 2-) : if the two substituents are on the adjacent carbon atoms, the compound is said to be ortho (or 1, 2-). 2. Meta (or 1, 3-) : if the
The number of appositively charged ions surrounded a certain ion in an ionic crystal lattice is known as co- ordination number.
Explain the mechanism of fluid film or hydrodynamic lubrication.
introduction to esters ,preparation, proprties, and their uses in daily life
An open test tube at 293 K is filled at the bottom with 24.2 cm of Hg, and 11.2 cm of water is placed above the Hg. Calculate the pressure at the bottom of the test tube if the at
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