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Explain objectives of annealing? Discuss the various annealing processes? Is spheroidising different from annealing? Illustrate.
A slow cooling rate from eutectoid temperature yields course pearlite - a mixture of comparatively coarse crystals of ferrite and cementite. Such a slow cooling is known as annealing. Here, sufficient time is available for carbon in the austenite to diffuse and redistribute itself to 0.02% in ferrite and 6.67% in cementite. During annealing, effective transformation temperature is low, where rate of growth is rapid compared to rate of nucleation. Hence, spheroidising is obviously different from annealing.
Given that the solubility product of calcium fluoride in water at 298K is 0.00000000004.Calculate the solubility of this calcium fluoride at this temperature. Assume the Debye-Huck
Mordant dyes: These dyes comprise no natural affinity for the fabric and are applied to it along with the help of specific additional substances termed as mordants. A mordant
What is the rate of reaction at the optimum temperature? (the starting concentration of the protein was 2 mg/ml, the Extinction coefficient (e) of the chromogenic product is A515 =
may i know the number of organic compounds
reversible and irreversible cell with example
The electronic configuration of four elements L,Q, P, and R are given in brackets: L ( 1s 2 , 2s 2 , 2p 4 ) Q (1s 2 , 2s 2 , 2p 6 , 3s 2 ,3p 5 ) P ( 1s 2 , 2s 2 2p
Elements upto atomic number 103 have been synthesized and studied. If a newly discovered element is found to have an atomic number 106, its electronic configuration will be: (1
in ecm some have positive eo values
Q. Define Conjugate acid-base pair and buffer? Buffers are substances that resist changes in pH. To "balance pH" means to buffer. Weak acids and bases make good buffers.
what is hi
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