Analytical Chemistry Interview Questions
Questions Answers Views Company eMail

What are the factors effect peak shape in HPLC ?

College School Exams Tests,

2 2649

Explain the relations between number of carbon atoms in alkanes and retention time ?

College School Exams Tests,

606

explain 5 components of gas chromatography ?

Nucon, College School Exams Tests,

638




Describe 5 components of SFC ?

College School Exams Tests,

1 863

How we can determine water content in piperazine

GVK, Cipla,

872

Difference between hlaf and rlaf

Sharon,

674

What is oot in Stability analysis? (example)

Indoco Remedies,

2 1363

How to choose concentration of LOQ solutions for RS analysis? Example.

Indoco Remedies, Abbott,

733




What is the main difference between ODS1 and ODS2 Hplc column.

Indoco Remedies,

1749

How to select Sample concentration in RS analysis?example.

1 1294

What is Diffidence between Normal Detector and PDA Detector?

Aurobindo,

2 3079

If we have a kc is1*10^8 and the .kp 2*10^5 of reaction A------->B C------->D what is the volume of C?

584

What is linearity in hplc and how to calibration

Aurobindo,

1 1777

Why void volume(time in seconds) 1 in hplc system suitability

1 2451

what is role of pH in mobile phase

Cipla, Dhanuka Laboratories,

3 4909


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Un-Answered Questions { Analytical Chemistry }

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

962


in gas chromatography what is the difference between gas flow rate and average linear velocity ?

991


how to calibrate hplc & gc

3089


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 ?

1136


How do we get end points and how many end points are possible for citric acid and di-acid not theorotically answer should be given practically.

1197






In BP2013, Loperamid HCl monograph. Assay by titration with 0.1N sodium hydroxide using hydrocloric acid 0.01N and reading the volume added between the 2 points of inflexion. I have a question that if the diluent solvent is ethanol is certainly consumed a amount of volume of titrant, so this volume must be eliminated on the result calculation or not apart from first point which is subtracted above.

1587


what is peak purity and its formula

181


why we use Dichlorobenzene.nitrobezine.t-butyldi sulhate.for calibration of gc Head space

916


Explain the relations between number of carbon atoms in alkanes and retention time ?

606


How we can determine water content in piperazine

872


What is aggregate and fragments in SEC?

628


what is difference between UV - VISIBLE MODEL NO like 1600,1601,1700 etc ? plz explain me

1177


what is the disso medium for tropsiun chloride

884


function of detecter in hplc ,gc and spectroscopy? function of carrier gas in gc?

1187


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

1075