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 Categories >> Sciences >> Chemistry
  Organic Chemistry (255)   Inorganic Chemistry (107)   Analytical Chemistry (1036)   Physical Chemistry (57)   General Chemistry (292)
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Question Asked @ Answers Views     Select
Through assay by hplc(anhydrous basis) product got 100.8% .How much the potency of that product.Moisture content is 1.7%,Sulfated ash is 0.02%,Total impurities are 0.3%    1  14
In Dissolution Test why limit is define Q+5% what is the role of +5%.    0  11
What Is the mechanism of pyridine and methanol .what products produce    0  12
why we measure PH of a solution in PH only why not POH ?    0  46
why we multiply 1000 in the determination of kf factor ?    0  30
What is reagent?    2  60
What is unit of mass defect?    1  35
class of solvent regarding Residual solvent e.g. Acetone his class    0  27
For water content determination, if the material is insoluble in methnaol and ethylene glycol mono methyl ether, what other diluent can we use.    0  22
i want to know about headspace and interview question on headspace    1  159
what are the ideal conditions for coloumn storage    1  116
in gas chromatography what is the difference between gas flow rate and average linear velocity ?    0  118
What is differences between normality and which cases both are used?    1  241
formula of petrol?    1  95
about analytical chemistry    0  78
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Un-Answered Questions
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what is induction on electrical insulators 490
what are stereomers? how are they classified? 1050
How can we determine Moisture content of HI? 399
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. 1253
What is the exact reason to use THF and IPA in buffers of Reverse phase HPLC as a solvent? 1085
graphaite has higher melting point than fularine 963
How many moles of sodium hydrogen phosphate can be prepared from 3 mol of sodium hydroxide and phosphoric acid? 620
Why we use potassium dichromate in control of absorbance in uv region and copper sulphate in control of absorbance in visible region? 1207
NIR wave length range how much 265
How can we calculate "confidence interval" in analytical method validation? Pl. explain with example. 1545
As per ICH related substances stability trend limit from initial to shelf life 687
In 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?? 781
which effect is mainly responsible for chromatographic separation when silica is the statinary phase at TLC? thanks in advance 134
Whai is the QUAITY as according to pharma or cemica or agro chemica industry? 469
what is silicon chip 441
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