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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.
Q. Show the Halides of Aluminium? All the four trihalides of aluminium, i.e. AIF 3 , AICI 3 ,, AlBr 3 , and AlI 3 , are known. AIF 3 , is made by treating Al 2 0 3 with HF ga
what happens to the reaction rate when the concentration changes
The atomic number of an element is 17. The number of orbitals containing electron pairs in its valence shell is: (1) Eight (2) Six (3) Three
Atoms or group of atoms which are electrically charged are known: (1) Anions (2) Cations (3) Ions (4) Atoms Ans:
OSCILLATOR THEORY OF LIQUID
Q. Explain Dalton’s atomic theory? The atomic theory In 1808 John Dalton projected a theory to explain the laws of conservation of matter definite proportions and multiple prop
Q. Describe about Dioxides? These are generally obtained by heating the element in air. The dioxides of Se and Te can also be prepared by treating the element with conc. HNO, f
Millikan and Harvey Fletchers oil-drop experiment The original experiment was performed in the year 1909 through Robert Millikan and Harvey Fletcher through balancing the downw
phenol is more acidic thyan eythanol
can you give some new ideas to treat water
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