Analytical Chemistry Interview Questions
Questions Answers Views Company eMail

What is diffrence between extractable volume and deliverable volume? Answer pls

625

why should we perform dissolution PVT calibration only by UV spectrometer, not by HPLC ?

310

Qc interview questions

Apotex,

279




What is difference between" LOD" AND "VACCUME LOD"

1 952

why are measure gas flow " ml " in Gas chromatography

290

Difference between standard operating procedure and standard test procedures in pharmaceutical industry

1 705

How to start the dissolution development for unknown tab?

IPCA,

253

what is DIPE limit in residual solvent?

446




What is control room temperature and which guide line says?

285

What is the pH of water?

Zydus Cadila,

1 914

Why we use buffers Acetate for pH 4.5 & phosphate for 6.8 and not vice-versa?

Zydus Cadila,

1 688

We use hicrome 10 cxs column in hplc analysis....pls tell me.. what is the meaning of 10 cxs?

203

Dear sir, This is R.Kadambavadani working in a pharma industry. while doing RS analysis of ibuprofen API, unknown peak eluting some times in the 0.6 Min RT. Kindly send me what is the exact reason behind that. also am using ACN the mobile phase.

236

What is difference between chemical Assay and Hplc assay?

Lee Pharma,

1 869

Near infrared Principle

1 430


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Un-Answered Questions { Analytical Chemistry }

Tell me something about Vitamin A test method by HPLC

1284


How would you decide dissolution medium for NCE compound of class I drug

664


How you develop a method in HPLC?

1228


Colorimtry

171


Did anybody have method for acetyl cysteine effervescnce tablet

847






How much is the standard area for glc analysis

885


why are measure gas flow " ml " in Gas chromatography

290


What is the principle of Thermal conductivity detector and FID?

1353


Why Ethanol is Used for Standardization of GC Head space?

2563


what is difference between zero air gas and o2 gas

5720


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

6765


In performance Check of GC Why Hexadecane Peak is Considered 

1722


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.

1550


How we performed the force degradation for drug substance, is any specific guideline is available for each parameter(Acidic, basic, oxidation,heat)? what conditions you mentained for above parameters.

964


IS THERE ANY EQUIPMENT TO CHECK AND CALCULATE THE POLARITY OF A LIQUID?

1187