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During Soundness testing of Cement by Lechatelier method the Cement mould expands about 20 mm when merged in curing water for 24 hours after mould preparation.In that Cement MgO content is about 3.0%,SO3 is about 2.6% & Blaine is about 360 M2/Kg.Guess the reason & suggest solution.
3079As per X-ray Fluorescence theory, when material particle is irradiated with X-ray the electron of innermost orbital of that element atom is exited and emits outside of the atom as photoelecrons, living behind a hole in innermost orbital . This hole is filled by outer orbital electrons. The question is that finely what happens to that photo electon which is emitted outside of the atom?
1 4239In testing of Cement the formula for water requirement for setting time is as below- Water required for setting time = NC x 0.85 The question is that what is the logic of 0.85 in this formula??
2427if two miscible liquids are each found to boil at the same temperature, could you safely conclude that they are identical?
2 16102
about method developement in hplc
how can give the expiry period and restadardisation of volumetric solution
CAN WE DETERMINE THE PEAK PURITY IN GAS CHROMATOGRAPHY ANALYSIS?
how to mesure a relation of assay by HPLC and purity in results?
in which situation ion pair agent require to use?
If change in specification which parameter require to do for validation? if change in chromtographic condition then which parameter? if api change then which parameter? if change composition then which parameter? if old method not work out then whicj parameter? if additional one impurity added then which parameter of validation require to do on above each conditions? elaborate separately
Explain the chemical formula for dichromate?
Name the branch of chemistry that deals with the relationship between electricity and chemical reactions?
Describe the process of Actinium extraction from its primary sources and how it's obtained for various applications.
What is titration?
Colorimtry
How are atoms of the isotopes different from one another? Two isotopes of carbon are carbon-12 and carbon-14.
Assuming that the density of the solution is the same as the density of water (density of water=1.000g/ml), calculate the mass of water for both reactions using: mass of water = Volume of water Density of water. Mass of water =
What is glacial acetic acid? What are its uses?
Why ph scale range is 14?
