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Why we don't add Hcl, HNO3, H3PO4 in residue on ignition, why we add H2SO4
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Because sulphates are more stable at 800 degrees when compared with chlorides and nitrates
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what is diffrence between shelf life and expiry date?
what is optical active and non active give examples?
is there any material other than caffene to calibrate hplc detector
why do u get different drug release while doing calibration of dissolution test appratus 1& 2(paddle & basket)?
1 Answers HDFC, Medrich, Twilight Litaka Pharma,
why we are using k2cr207 in uv calibration ? why we r not using kmno4?
1 Answers Glochem, Sidmak Laboratories,
why the most API molecule are in the hydrochloride form?
why we are doing seal wash and needle wash?
U have 4 strengths have different coating meterial which one u chose to do forced degradation stady in validation
why we are using buffer solutionas as a mobile phase in hplc.
How do we quantify crystaline and amarpous forms by using (NMR, XRD)spectroscopic techniques? Which any others instruments are useful for this quantification? explain
0 Answers Graviti Pharmaceuticals, Vimta Labs,
What are the concentration limit for class-1 residual solvents in ICH ?
what is rt and rrt? how we find rrt? relation between rt and rrt/
Organic Chemistry 
