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What are the Stages of heat treatment process
All heat treatment processes comprises 3-main steps:
(i) Heating of metal/alloy to the predetermined (definite) temperature.
(ii) Holding (or soaking) of the metal at that temperature for a sufficient period to allow necessary changes (for example Austenitizing) to occur i.e. structure becomes uniform throughout the section.
(iii) Cooling at a predetermined rate necessary to attain desired properties associated with changes in nature, form, size and distribution of.
50ml of 0.1M NH 4 OH ,25ml NH 4 Cl weere used to make a buffer . what is the PH is if Pk b is 4.8? Solution) The given buffer is a base buffer [NH4OH] =[(50*0.1)/75] [NH4Cl] =[(
name any 10 chemical compound used at homewith their molecular formula
Filter A plant pot with a plug of cotton wool in the bottom and a layer of sand little inches deep makes a satisfactory filter for more purposes
Filter pump Some skill is needed to construct the ordinary glass filter pump, but it is possible to contrive one from glass tubing and good corks. The action of the pump depend
define
In this synthesis of indole the addition of keto thioether to choloroamine to give sulphonium ion. this reaction is carried out at low temperature . why?
what is water gas and how is it prepared?
why must the mass relative of atom refer to atomic mass of C
metals iron, aluminium, copper, gold, etc. have great industrial significants. which are their important ores? important alloys of iron, aluminium and copper and their uses.
After making an ester by heating a carboxylic acid with alcohol in the presence of concentrated sulfuric acid, water is added to the mixture and the ester seperates out as oily lay
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