Analytical Chemistry Interview Questions, Answers for Freshers and Experienced asked in various Company Job Interviews

Analytical Chemistry Interview Questions

Questions Answers Views Company eMail

what are peak purity,peak purity index,peak thresold

2 18108

1)why use benzophenon,uracil in hplc calibration. 2)why use sucrose in polarimeter calibration. 3)what is S/N ratio, noise and drift in hplc 4)how we can find lod and loq in method validation

1 14851

What is (Q) point dissolution?

Cipla, Macleods,

6 26830

Why we are using K2Cr2O7 for control of absorbance in UV?

2 13446

1 why polyesterene film used for ftir calibration ? 2 why k2cr2o7 is used for control of abs in uv ? 3 why holmium oxide used for control of wavelength in uv

3 12947

what is the principal of malvern particle sizer & its used in pharma industry

3 9338

what is the difference between system precision and method precision?

Teva Pharmaceuticals,

3 36969

In lcms analysis some times we get sodium and potassium adducts. if the compound is havine sodium ions how can we confirm wether sodium is from sample or it is a adduct?

Teva Pharmaceuticals,

2 7671

what is difference between moisture contents and water contents ?

Cipla, Hetero, USM,

12 60082

In GC, What does 'Column condensation test' mean by?

Reddy Labs,

2 11586

same sample on two preapration gives differnt result during hplc analysis

3 8460

what is titrent,& titrate

Graviti Pharmaceuticals,

2 13767

Why we are using a Kf Factor range 4 to 6

7 60795

What is difference between Chromatographic purity and Related substances analysis?

3 23495

Why we are using the methanol in Kf titration?

Reddy Labs,

6 21886

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Un-Answered Questions { Analytical Chemistry }

how to calculate elemental impurities?

1032

How we choose the mobile phase for method development.?

1211

In performance Check of GC Why Hexadecane Peak is Considered

3044

why multimedia dissolution require to do?

830

What is mean by PDR?

946

what type of question will ask in the interview of lab chemist.

3321

if rsd failed then what require to do?

836

What is importance of pH in the Heavy metal test and How it effect on the test results?

2283

Basic principle of ESI?

2151

what you do when compound having dwel wavelength?

750

in which situation ion pair agent require to use?

737

how require to interprit the method precision data of hptlc?

821

If suppose 10 methods of dissolution given in pharmacopoeial for single content product then which method out of 10? or all 10 require to follow?

986

Hi sir if any product monograph not given known impurities (may be 5 impurities) specifications then how we require to proceed for inhouse formulation?

705

mode of absorption in alimentary canal?

2390

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