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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).
Which one of the following set of quantum numbers is not possible for 4p electron : (1) n=4, l=1, m=-1, s= +1/2 (2) n=4, l=1, m=0, s= +1/2 (3) n=
Acidic nature of monocarboxylic acids (1) Cause of acidic nature (a) A atom of carboxylic acid may be illustrated as a resonance hybrid of the following structures.
hybridisation of o in boric acid
In the transition of Zn atoms to Zn ++ ions there is a decrease in the: (1) Number of valency electrons (2) Atomic weight (3) Atomic number (4) Equivalent weight A
assigenment for liquified gas
Most ligands have a nonbonding electron pair that may react as a donor to empty orbitals on the metal atom. In ligands known as π acids or π acceptors a donor-acceptor communic
name an artificial fertilizer or fertilisisers which farmer can use to increase the supply of nitrate,phosphate and potassium to their crops.what are the function of ions?
crystal field theory
Saytzeff rule
Q. What are the rules used for round off numbers? 1. If the digit to the instantaneous right of the last significant figure is less than five don't change the last significan
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