Analytical Chemistry Interview Questions
Questions Answers Views Company eMail

which effect is mainly responsible for chromatographic separation when silica is the statinary phase at TLC? thanks in advance

1 1727

what is different when impergnated silica plates are used in separation of azo dyes using column chromatography?

730

why in GC calibration of linearity regression coefficient should not be less than 0.999

Jubilant, Acacia,

1 3380




why don't we call POH meter? As we all as PH meter

Aurobindo,

4 4762

Why we are having specification 100% above in case of assay as there is only 100% of compound?

Nectar Lifesciences, MSN Pharma,

2 3245

why we are taking 89ml concentrated HCL for preparing 1N HCL

3 5551

Calculate the water content in Di Sodium Tartrate (DST) based on molecular weight?

2 3236

What are the terms used during Melting Range Analysis ?

2 1980




As per USP u/vacuum means (how much vacuum should be applied)?

Mylan,

1 3184

what is difference between zero air gas and o2 gas

IPCA, Vasudha Pharma,

1 6698

While performing TOC sst analysis Zero shift disabled & sample analysis zero shift enabled why?

1084

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

Hetero,

991

In which cases factor of KF Reaget got higher side

2 3799

what is the concept for adjustment of pH in HPLC buffer solution ? a. Common ion effect b. Counter ion effect and explain me, how we adapt this principles & what is the role of these principles in our method

Apex, Pentagon Labs,

1179

What is the difference between BD

1 892


Post New Analytical Chemistry Questions






Un-Answered Questions { Analytical Chemistry }

what is the importance of peak purity in HPLC and how we can calculate through manul(not software)?

3149


Why to use propyl paraben in HPLC gradient calibration

826


some product having water content method with pyridine and ethylene glycol mixture instead of methanol? how they are selecting and methanol is not suitable solvent how ?

1208


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

1130


why we use a particular hplc column for a particular compound give reasons?please

1562






what type of questions asked on analytical balance and also give answers................all pharma companies?

6417


What is the Formula for coreletion coefficient in plhplc calibration

200


what is %labelled amount in content uniformity of dosage unit and its calculation?

3654


sop of a uv visible spectrophotometer double beam elico model

4227


what is partion and column chromatography

1085


Colorimtry

276


How to determine the EDTA content by potentiometry titration in Ceftriaxine sodium

1154


WHAT IS DIFFERENCE B/W MALTINGRANG/DSC

1223


In IR spectra, generally a molecule vibrates without apply emr or ir light?

605


Identify problem faced when mass spectroscopy is used with HPLC system ?

733