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Explain Curie point and hystereris?
An ordinary piece of iron generally has little or no net magnetic moment. Though, if it is placed in a strong enough external magnetic field, domains will re-orient in parallel with that field, and will remain re-oriented when field is turned off, Hence creating a "permanent" magnet. This magnetization as a function of external field is described by a hysteresis curve. However this state of aligned domains isn't a minimal-energy configuration, it's extremely stable and has been observed to persist for millions of years in seafloor magnetite aligned by Earth's magnetic field (whose poles can thereby be seen to flip at long intervals). Net magnetization can be destroyed by heating and then cooling (annealing) the material without an external field, however.
Q. Show the Ionization of Acids in Water? Ans. Like ionic compounds, acids are electrolytes . When dissolved in water, acids break down into ions. Ionization refers to
what is etard oxidation ?.machanisum
Question: (i) Explain the concept of Environmental Impact Assessment (EIA) and state its main objectives. (ii) List 3 activities (from the marine sector) which require an
A crucial step in the Robinson annelation is the elimation of an aldol adduct to form an enone. The elimination of an aldol product can occur in base (it occurs even more readily i
name the acid present in ant sting and give its chemical formula also give common method to get relief from the discomfort caused by ant sting
I WANT TO DISCUSS ABOUT IRON CHEMICAL ANALYSIS.POSSIBLE THAT?.
what is cis-trans isomerisation?
two reasons why is it necessary to ionise chromium atomsin a sample
Carbon And its Compounds Carbon is a typical non-metal present in earth's crust to the extent of 0,02% by mass. All living organisms contain carbon and hydrogen as their ess
Classic flame photometric experiment: In a classic flame photometric experiment, a solution of the analyte is aspirated within the burner and dispersed into the flame as a fin
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