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Answer Posted / ravi sharma
we perform the residue on ignition to determine the inorganic impurities in organic substance
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which are the diffrent batches in the pharmaceuticals?
why should we perform dissolution PVT calibration only by UV spectrometer, not by HPLC ?
How do we fix the sample concentaryion in hplc method development. What is the basis?
What is Band broading effect explain
From where require to take the RLD sample?
Why do we use KMnO4 in the test of control of obsorbance ? and why do we take specific quantity i.e 57-63mg?
Why we check moisture,ash & AIA in product
UV and PDA detector, which have less signal to noise ratio?
why we use glass fiber filters use in some situation?
why are measure gas flow " ml " in Gas chromatography
why sre you used Potassium hydrogen phthalate in standarisation of 1N NaOH and 0.1 N Perchloric Acid?
give clarity of linearity and range in method validation
1)What's the meaning of Absorption,give a example. 2)What's the meaning of Adsorption,give a example. 2)what is the difference between Absorption and Adsorption.
2. Two grams of Benzoic acid are dissolved in 200 ml of water and extracted with 200 ml of diethyl ether. The distribution coefficient of benzoic acid is 100, and its dissociation constant is 6.5 10-5. Calculate the distribution ratio (D) of benzoic acid at pH 2, 5, and 6. 3. Calculate D at pH 2 to 10 (1 unit apart) in the above problem, and plot D versus pH.
What should be the level/ Percentage of Arsenic in Arsenic free zinc.
