Analytical Chemistry Interview Questions
Questions Answers Views Company eMail

One Raw material failed assay test is there any chance for failing purity of that material ?

Mylan,

7 8396

What are the differences between GC and HPLC?

1 11868

Why do we need GC instead of HPLC? or Why do we need HPLC instead of GC?

4 9043




What is linearity in HPLC and how will you test?

1 15920

what is the difference between polarimeter lamp and ir lamp

2110

What is the difference of time between two consecutive injections in HPLC?

Nectar Lifesciences,

2 7864

what is difference between IR lamp and polarimeter lamp

Raks Pharma,

2 5771

Why dissolution test is not performed in all of the products

Biocon, SDD,

1240




why we need to do karl ficher fector ?

Reliance,

2 8997

Why we are use 0.005M Sulphuric acid, in control of absorbance performance test UV Spectrophotometer calibration

Cipla, Reddy Labs,

2 11838

How much sample concentration should i inject against diluted standard in related substances for drug product in hplc analysis

Apotex,

1 2082

how to prepare 25 ppm acetone. explian with formula

4 11479

why sucrose not used in polarimeter calibration?

Cipla,

2 7645

What is the diffeence between assay and uniformity of content

2 6953

why ur using toulene in hexane in u.v calibration?

Biological.e.limited, Cipla,

3 23217


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Un-Answered Questions { Analytical Chemistry }

For titration in anhydrous media with perchloric acide, if lack of titrator, Which indicator is been used for replacement. How calculate pH of test solution to choose suitable indicator?

939


In Dissolution Test why limit is define Q+5% what is the role of +5%.

1565


How they found 1mL of K.F reagent is equivalent to 5mg of water and if we change the composition of K.F reagent, is it can neutralize more amount of water?

433


What should be the level/ Percentage of Arsenic in Arsenic free zinc.

1082


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

605






In Karl Fischer titration,What is the situation if the material tested is only soluble in water,and not soluble in the common solvents used such as methanol ?? [e.g. Iron III Hydroxide polymaltose]

1568


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

782


In GC calibration,what is the procedure to calibrate the TCD (thermal counductivity detector)suggest ?

1970


what is procedure of actual procedure for registration of drug?

698


all types of questions asked at the cipla interview

3409


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

734


why disodium tartarate used in karl-fischer instrument ?.

778


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

1142


What is aggregate and fragments in SEC?

705


Home heating oil or furnace oil what is made from? Can (base oil plus diesel/kerosen) = home heating oil?

918