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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 2351

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

Glenmark,

2 11134

What is difference between Related Substance & Impurity Profile?

Jubilant Organosys,

2 46491

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

3 8032

why wetlab is called as wetlab

6 13514

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 7808

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

Apex,

4 7349

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

1 5021

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

1385

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 23743

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

3 9660

why we are calibrating autopolarimeter with quartz control plates

1 4308

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

GHI, Siemens,

8121

why we use TLC?

8 16810

why disodium tartarate is used for autotitrator calibration

Cipla, Micro Labs,

2 10897


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Un-Answered Questions { Analytical Chemistry }

WHAT IS THE PURPOSE WE USE HCL, CHOPPER, BURNER, MONOCHROMATOR in AAS? PLEASE EXPLAIN BRIEFLY

1434


How do we fix the sample concentaryion in hplc method development. What is the basis?

182


Why we check moisture,ash & AIA in product

854


How to choose the which salt is suitable for mobilephase

2072


What is Band broading effect explain

900






how you determine moist.of NaOH sol or NaOH flacks

1346


What is the difference between c8 and c18 hplc column?

192


How do we quantify crystaline and amarpous forms by using (NMR, XRD)spectroscopic techniques? Which any others instruments are useful for this quantification? explain

1460


from where i get mortar pastle for glass bottle crush? it's required for testing of it?

1162


For titration in anhydrous media with perchloric acide, if lack of titrator, Which indicator is been used for replacement. How calculate pH of test solution to choose suitable indicator?

1234


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

104


what is the structure of DOWEX-50

4287


For limit test of heavy metals in BP, Method C require that the substance is ignited at a temperature not exceeding 800 °C. Why confines such the temperature?

2896


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

1280


EXPLAIN THE CALCULATION PART OF AN KF TITRATOR CALIBRATION WITH SUITABLE EXAMPLE

1622