Analytical Chemistry Interview Questions
Questions Answers Views Company eMail

How can you prepare 0.1% Phosphate buffer solution?

6 8177

wat is the role of michelson interferometer in FTIR and He-Ne lase.detailed answer required in simple language

Police Constable,

1 1167

difference between quality and quantity

3 9081




why we get only one peak in assay by hplc but in rs by hplc get more peaks

MSN Pharma,

1 8724

In performance Check of GC Why Hexadecane Peak is Considered 

MSN Pharma, Asian Paints,

1770

Is it required to inject 6 injections for % RSD of a system suitability in lc or gc

Raks Pharma,

3 9076

Why do we use KCl ,K2Cr207,Toulene & Halonium oxide for the caliberation of UV

Apotex,

2 12906

what is rt and rrt? how we find rrt? relation between rt and rrt/

Cadila,

1 11844




why the ph scale range is 1 t0 14 and why not beyond 14 and not to below 1?

Orchid, Granules, Avra,

5 17060

What is method validation in quality control

Alchem,

2401

Why we use uracil and caffeine in hplc calibration

Alchem, Reddy Labs,

4 20008

If mass balance is not passing in forced degradation in method validation that method is suitable or not?

Dr Reddys, Reddy Labs, Aurobindo, Wockhardt,

1 6018

Why we compare unequal concentrated solutions in heavy metals test. For example comparing the test solution with 1 ppm lead standard and telling it's less than 20ppm?

Micro Labs, Mistair,

1 5858

What is the reason for negative peak in HPLC while using UV detector.

2 12398

What is the reason of RT change in new column v/s old column in HPLC

Apex,

3 14038


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Un-Answered Questions { Analytical Chemistry }

Why dissolution test is not performed in all of the products

1187


WHY given much noise PDA dector then VWD Dector

664


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

1153


What is the difference between known and unknown impurities?

265


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

897






What is aggregate and fragments in SEC?

651


which one is better separation in high pressure liquide chromatogram orlowpressure chromato gram in hplc

935


What is the principle of Thermal conductivity detector and FID?

1423


What is the principle of HPLC, GC, LCMS, GCMS,LC QQQ, GC QQQ, LC Q TOF and GC Q TOF. What are the applications and Specificity?

5824


What is the acceptance criteria for moisture balance when calibrated with sodium sulfate

697


How to do regeneration of Metacarb Pb plus column?

1262


mahagenco syllabus for the post of chemist

4904


How to start the dissolution development for unknown tab?

306


why are measure gas flow " ml " in Gas chromatography

365


WHAT IS THE USE OF STARTER ?????????

1089