Analytical Chemistry Interview Questions
Questions Answers Views Company eMail

What is differences between the Instrument and Equipment

Aurobindo,

2 490

Why dissolution test apparatus calibration with salycilic acid tablets was stopped by FDA&USP from the year of 2009?

1 486

What is UV cut off?

Sanmar,

1 528




What is the importance of sulphated ash test?

1 454

What is impurities in pharma analysis?

1 328

What are the different zones in stability according to ICH?

Apotex,

1 458

According to ICH,India is coming under which climatic zones?

Cipla,

1 482

How does GC did work?

1 239




Which detector is used in uv-vis spectrophotometer?

Glenmark,

1 523

Why chromic acid wash is not recommended by USP for glassware cleaning?

Lupin,

1 326

What is the difference between ROI & sulphates ash?

1 457

What is difference between NDA & ANDA ?

1 445

What is Rf value& Rx value in TLC?

1 422

What are the six USP melting point reference standards?

1 338

What is the size of capillary tube used for analysing melting point?

Apotex,

1 372


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Un-Answered Questions { Analytical Chemistry }

EXPLAIN THE CALCULATION PART OF AN KF TITRATOR CALIBRATION WITH SUITABLE EXAMPLE

1404


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


Tell me something about Vitamin A test method by HPLC

1428


WHY pKa value is more important than pH value of the mobile phase in HPLC?

151


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

1173






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

353


How will u perform degradation study in detectors other thann PDA in HPLC Methodology

1309


what is the difference between potentiometric titration and karl fischer titration?

1289


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

6595


what is the extinction coefficient for Indomethacin or at 319nm wave length.

2661


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

1077


How can I develope method of dissolution by HPLC OR UV

1047


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

799


how to selecet an exact coloumn for an new molecule development by hplc how to select exact salt as buffer for new molecule development by hplc what is the the process to select the mode of saparation of compoundes by hplc what is the use of ph of buffer what is use of buffer,ph,organic phase,ans methods how the molecules get saparated in coloumn,

1189


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

809