Analytical Chemistry Interview Questions
Questions Answers Views Company eMail

how can you determine a compound acidic or basic?

Cipla, Celon Labs,

2 7129

For LOD and LOQ determination which method is accurate? (slopemethod or s/n ratio method)

Reddy Labs,

4 6627

how to develop the shorter run time for pharmacopeial methods having 100 min run time?

Reddy Labs,

3 7441




How you start the method development of unknown compound.

1 3235

How to determine water content of bis tetrazole amine mono ammonium salt

1855

Is there any difference in principal of reverse phase and normal phase chromatography? and why? Please update. Thank and regard

MSN Pharma,

3 7400

How to use RF and rrf in Rs calculation( either multiply or divide)?

Micro Labs,

3 6751

WHY KBr is used in IR Spectroscopy

GVK,

3 9764




How can you prepare 0.05M Ammonium acetate volumetric solution?

2 12450

Why using 0.5% acetone in methanol mobile phase for HPLC Gradient performance check.

DRL,

2 9227

IF WE INCREASE FLOW RATE RT DECRESE.WHY

2 7528

in hplc calibration injector linearity pass,it means inj and det is good. why to perform detector linearity is it required, if it is required,what is difference between injector and detector linearity in hplc calibration

Hetero, Dr Reddys,

4 8759

how can you decide API molucule acedic or basic compound by test?

Posh Chemicals,

2 6790

acceptance criteria for lod & loq by standard deviation of response and slope??

1131

various methos to calculate precision in validation methods in HPLC?

2 4694


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Un-Answered Questions { Analytical Chemistry }

What is the difference between BD

704


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

929


why we use a particular hplc column for a particular compound give reasons?please

1449


Qc interview questions

280


how will you do the prep for unstable componds?

619






Why we check moisture,ash & AIA in product

423


how to calculate corelation coefficient in G.C Calibration? what is the calculation part?

911


In the isomers,enantiomers give the only physical properties present such that no chemical properties present.

921


How to choose concentration of LOQ solutions for RS analysis? Example.

702


give clarity of linearity and range in method validation

889


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 ?

2030


WHICH STANDARD WE USE IN SILICA ANALYSIS IN SILICA-GEL METHOD FOR SOLID SAMPLE

812


mode of absorption in alimentary canal?

1107


what is turbidimetric titration?Give 2 examples.

1002


We use Potassium Dichromate solution for the calibration of UV-Visible Spectrophotometer in UV region. My question is to calibrate visible region which solution could be used in photometric accuracy

108