Analytical Chemistry Interview Questions
Questions Answers Views Company eMail

solvents used in NMR

Laurus,

2 4610

what does 'n' stands for in spectroscopy?give the formula.

Laurus,

1218

define beer-lambertslaw.

Laurus,

5 9123




difference between precision & accuracy.

Laurus,

1 8542

formula for %RSD.

Laurus,

4 10611

which chromatographic technique is used for softening hard water?

Laurus,

1 4781

Nitrogen test is used for which chromatography?

Laurus,

1 5185

what are the primary standards of redox titrations?Name any two.

Laurus,

2 6427




In the isomers,enantiomers give the only physical properties present such that no chemical properties present.

Laurus,

1049

mode of absorption in alimentary canal?

Sun Pharma,

1227

why we calibrate ph meter and balance daily.....but hplc and uv requires quaterly?

Apotex, UPL,

5 15025

why we are use metthanol variously in kfr?why don't use other solutions?

4 8294

when we use capillary and packed columns in gc

Rakshit Drugs,

4 6308

what is the difference between IR and FTIR instrument analysis

2 8998

how can give the expiry period and restadardisation of volumetric solution

Meenaxy Pharma, SRF,

1367


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Un-Answered Questions { Analytical Chemistry }

In performance Check of GC Why Hexadecane Peak is Considered 

1844


process of Diclofenac sodium,IP.

946


is it necessary to do HPLC calibration at wavelength 315nm if we are doing analysis at this wavelangth

651


mahagenco syllabus for the post of chemist

4977


In dissolution of tablets/capsules elaborate the Dissolution limit 20.0% to 60% Q in 30 minutes.

800






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

7345


mode of absorption in alimentary canal?

1227


In HPLC Calibration, On which basis RSD Limit of noise test is fixed (NMT 33.0 % )

2082


What is gelatinization?

479


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

1506


why does used dry caffien in HPLC calibration?

667


how can give the expiry period and restadardisation of volumetric solution

1367


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.

1698


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 ?

1228


are there in uv lamb that is chractrestic for wavelenghth 205 nm ?????

786