Analytical Chemistry Interview Questions
Questions Answers Views Company eMail

wen v have polr solvent then which type of column use in hplc

2 5070

What is Threshold in hplc?

Hetero,

2 13411

Why we use Caffeine in hplc calibration

Laurus, Emcure,

2 9914




what is the meaning of stress study?

Reddy Labs,

2 2132

what is the difference between potentiometric assay and hplc assay

Parabolic,

2 10234

why we are using buffer solutionas as a mobile phase in hplc.

2 7922

importance of internal standard and in what conditions it is used?

1 2323

how to selecet an exact coloumn for an new molecule development by hplc how to select exact salt as buffer for new molecule development by hplc what is the the process to select the mode of saparation of compoundes by hplc what is the use of ph of buffer what is use of buffer,ph,organic phase,ans methods how the molecules get saparated in coloumn,

1118




how to select short coloum and long coloumn for new molecule

Rampex Labs,

1008

what is poarimeter, why it is used in pharma,and explain briefly about polarimeter?

GVK,

3 7497

Why KBR is used in IR for preparation of pellete, why it shows zero dipole moment

GVK,

7 7258

what is optical active and non active give examples?

GVK,

1 2823

what is custom fields in waters system?

Aurobindo, Akorn India,

1 5732

my name is santhosh i cmpleted b.pharmacy in 2009 then i went to uk in 2010 to pg diploma business management. after i came back to india.. recently again apply to uk for pharmaceutical analysis. they refused my visa you failed to explain y u r change subject. so plz ineed answer for y change the cource

1 1460

why kbr is used for pellet preparation in ir spectroscopy, give the reasons? why kbr shows zero dipole moment?

6 10618


Post New Analytical Chemistry Questions






Un-Answered Questions { Analytical Chemistry }

how to selecet an exact coloumn for an new molecule development by hplc how to select exact salt as buffer for new molecule development by hplc what is the the process to select the mode of saparation of compoundes by hplc what is the use of ph of buffer what is use of buffer,ph,organic phase,ans methods how the molecules get saparated in coloumn,

1118


why are measure gas flow " ml " in Gas chromatography

333


what is lod and loq ?,why use k2cr2o7 , kcl h2so4 in uv calibration ?,why use benzophenone & caffene acetone in hplc calibration ?,what is leading peak in hplc ?why we do the calibration of limit of stry light in hplc & uv ?

2088


why sre you used Potassium hydrogen phthalate in standarisation of 1N NaOH and 0.1 N Perchloric Acid?

6768


for heavy metal test lead used in which form pure form or any other form for preparation of lead standard sol

3556






Why we used in n-butyl acetate water content terminology while in ethyl acetate we used moisture content terminology?

540


Did anybody have method for acetyl cysteine effervescnce tablet

877


Why we check moisture,ash & AIA in product

456


In IR spectra, generally a molecule vibrates without apply emr or ir light?

536


in gas chromatography what is the difference between gas flow rate and average linear velocity ?

991


In HPLC calibration, caffeine is used as primary standard for wave length calibration due to caffeine is having dual maxima at 273 & 205 nm and one minima at 245 nm. Any body can give reference of these details from any pharmacopeia (with chapter no.) or any other authentic guideline?

292


What is the diference between residual solvents and organic volatile matter

661


How to calculation of residual solvent methanol (3000 ppm) standard solution, and how many quantity used of test sample

1023


What are usp limits for theoritical plats,resoution,tailing factor,peak to valley ratio

283


what is different when impergnated silica plates are used in separation of azo dyes using column chromatography?

668