Analytical Chemistry Interview Questions
Questions Answers Views Company eMail

what is the defination of calibration & verification?

Divis Laboratories,

9 21212

what is specificity?

Amneal Pharmaceuticals, Aurobindo,

4 8894

why we use only vanilline , acetanilide,& caffeine For the Calibration of melting point appartus?

Reddy Labs,

7 20729




who is the father modern liqiud chromatogrphy?

Cipla, Amneal Pharmaceuticals, Car Chem,

3 9428

what is the meaning of ventillation in HPLC?

Amneal Pharmaceuticals,

3 9843

which solvent is highest poler acetonitrile dimethyl formamide methanole tetrahydrofurane buffer solution

8 9250

what is the difference betwen the analytical column & peparative column?

4 10446

why we conclude the area% for the chromatographic purity?

Lupin, Amneal Pharmaceuticals,

1 4771




what is the general mechanism of high performance liqiud chromatography?

Amneal Pharmaceuticals, Ajanta Pharma,

7 12665

why 2Theta value is consider in the XRPD spectra and how to consider the 2 Theta value

2 5731

why we wre doing linearity siudiec in hplc method validation

Cipla,

3 17792

what does optical rotation and specific rotataion means,difference between them

Neuland, CPL,

8 25625

what is regration method in method validation , how we can calculate it.

Sun Pharma, Cipla,

3 8016

viod volume and dead time

Oxygen Healthcare,

7 13750

i want model written test paper for the post of analyst in IOCL(indian oil corporation ltd) any one pls help me

1421


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Un-Answered Questions { Analytical Chemistry }

1.What is the difference between method validation and method verification 2.Which guidelines proposed to method transfer

239


How can I develope method of dissolution by HPLC OR UV

969


In HPLC (Waters) software Empower1,2 &3 what is the updation for each version

1412


give clarity of linearity and range in method validation

943


Tell me something about Vitamin A test method by HPLC

1338






could negative ions be produced by bombardment process in mass spectrometry?

193


how you determine moist.of NaOH sol or NaOH flacks

1021


Why acetonitrile and water are used as extraction solvent when analysis melamine? I thought they are miscible and won't be able to separate...

252


My question about gas chromatography sulfur chemiluminsecence detector. I test unknown sample gas by GC-SCD (calibrated ) and the result of *H2S is 279 PPM , *but when I test the same sample with the GC-TCD (calibrated ) the value of *H2S is 2500 PPM . I'd like to inform you that both GCs are calibrated and have very good operation conditions with stable parameters . the question is if the sample gas with higher H2S over detection limits of SCD detector (1000 ppm). why the result it 279 ppm Best regards

198


what is the importence and role of LCMS and LCMS/MS and their applications? which type of compounds are analysis by lcms?

2297


What is viod volume and peak purity in HPLC?

1349


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?

1010


How we can determine water content in piperazine

891


explain 5 components of gas chromatography ?

666


mahagenco syllabus for the post of chemist

4904