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

Analytical Chemistry Interview Questions

Questions Answers Views Company eMail

In burette calibration of Karl fischer Instrument, the multiplication factor 1.00693 is using for how much ml of water dispenced. why

1 4348

how can we decide the limit of cleaning validation? What is the criteria for it?

Glenmark,

2 13577

What is difference between Related Substance & Impurity Profile?

Jubilant Organosys,

2 51677

Why we are injecting low load standard conc. while analysing Related Substances by HPLC?

3 11086

why wetlab is called as wetlab

6 17681

In UV-VIS spectrophotometer:My diluent is methanol even though i corrected base line for methanol,In my sample scan i found methanol peak.what is the reason?

2 10124

What is the diffrence between the performing of LOD ordinary drying at voven and vaccum method.

Apex,

4 10712

How can we calibrate the burette dispencing capacity in metrorm kf titration calibration

1 6777

how a particular wavelength can be different for a particular compund while analysing by uv and by HPLC.

2250

in hplc calibration we are using 0.05% acetone why we are using that one and what happen when its conc increases or decreases

Aurobindo, Cadila, Martin,

4 31906

loss on drying we applied vaccum for some compounds and some compounds are at 105c why

3 12308

why we are calibrating autopolarimeter with quartz control plates

1 5755

what is the different in Total ash, sulphated ash, acid insoluble ash, alcoholic or non alcoholic ash?

GHI, Siemens,

9931

why we use TLC?

8 21862

why disodium tartarate is used for autotitrator calibration

Cipla, Micro Labs,

2 13309

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Un-Answered Questions { Analytical Chemistry }

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

6002

what is impurity profile. how to interpret this impurity profile to a drug product or drug substance.

2590

mode of absorption in alimentary canal?

2345

why lactose has less charges when packed in steel containers when compared with packing of lactose in polyamide material?

2250

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?

939

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 ?

3626

what are the guidelines for analytical method validations?

1061

Why we use potassium dichromate in uv calibration Exact reason behind it??

1194

Why only hydroxy naphthol blue indicator is used for standardisation of 0.05M EDTA solution instead of solochrome Black T or Euriochrome Black T indicator which is used for all sample analysis with 0.05M EDTA solution?

2670

Why six unit used for precision?

1279

what is mean by extactable and leachable study?

1112

Ratio of Water and Acetonitrile(diluent) is not recommended to use in cleaning method validation,why?

2904

How will u perform degradation study in detectors other thann PDA in HPLC Methodology

2487

how you start RS method development when for new product?

668

What is a difference between potency and purity?

1159

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