Why we have to take 42gm of sodium hydroxide instead of 40gm for preparation of 1M Sodium hydroxide as per Pharmacopia? Whether it means the formula for calculating molarity was wrong?3 6161
what is internal standard define2 1870
What are the parameters for the method development of Gas Chromatography and GC-HS?2 3225
how much mass should be there in volumetric flask while in preparation of sample for assay?1344
U have 4 strengths have different coating meterial which one u chose to do forced degradation stady in validation1 2135
Tell me about analytical method validation in QC2554
Why do we use KMnO4 in the test of control of obsorbance ? and why do we take specific quantity i.e 57-63mg?
calibrtion procedue of LC-MS
Why use only methanol,used determinationof moisture content not use other solvents
For titration in anhydrous media with perchloric acide, if lack of titrator, Which indicator is been used for replacement. How calculate pH of test solution to choose suitable indicator?
in dissolution in one tablets two molecule one is losartan & second is HCTZ losartam is complies in s1 stage & hctz is complies in s2 stage then how to report result losartan s1 stage result or losartan s2 stage result
Explain the relations between number of carbon atoms in alkanes and retention time ?
what is difference in ods I ods II is this is realy from sorbent / packing characteristics or from other means
Tell me something about Vitamin A test method by HPLC
How to start the dissolution development for unknown tab?
why we are using hexane in calibration of number of drop per mL
In IR spectra, generally a molecule vibrates without apply emr or ir light?
As per ICH related substances stability trend limit from initial to shelf life
when we talk about change in entropy we consider total entropy means of surround +entropy of system but when we talk about change in Gibss free energy we consider entropy of system.explain with reason.
How can we confirm the HPLC column is end-capped or not? Is it possible to identify by physical appearance?
what type of question will ask in the interview of lab chemist.