Chemistry Interview Questions
Questions Answers Views Company eMail

what is diffrence between shelf life and expiry date?

1 916

how you start RS method development when for new product?

281

how you establish the LOQ?

297

in which situation require to use paddle and basket?

277

what is mean by dissolution hydrodynamics?

339

column washing procedure for normal phase and reverse phase?

1 817

how to convert normal phase hplc to reverse phase and vice versa?

1 1739

if your impurity coeluting with each other in that situation how require to set specification? is it acceptable?

361

what is mean by extactable and leachable study?

557

how to calculate elemental impurities?

534

how you fix the limits of impurities?

369

what is mean by nitrosamine impurities?

533

if instrument calibration fails then what require to do?

455

why require the ph, buffer during hplc mobile phase?

396

is it nessesary to do solution stability for 7 days?

307


Un-Answered Questions { Chemistry }

How to fix the sample conc. in Related substances test by HPLC?

605


Why ammonia is used as buffer solution in estimation of copper by EDTA method

1353


Why only hydroxy naphthol blue indicator is used for standardisation of 0.05M EDTA solution instead of solochrome Black T or Euriochrome Black T indicator which is used for all sample analysis with 0.05M EDTA solution?

2195


Give the others form of iron ore.

582


Explain the molar mass of chlorine?

574






Which of the above conductivity measured during conductometric titration?

558


Define:minerals and ores

2080


What is the application of hardness date in environmental engineering practice?

911


USP methodology, EP methodology, IP methodology, among three if possible to use one methodology for qualify working standard to use USP, EP, IP ? Please explain...

1548


What is delay volume?

838


What is meant by transmittance?

616


What are the advantages of potentiometric titration?

639


why lactose has less charges when packed in steel containers when compared with packing of lactose in polyamide material?

1752


In testing of Cement the formula for water requirement for setting time is as below- Water required for setting time = NC x 0.85 The question is that what is the logic of 0.85 in this formula??

2025


if tech transfer fails whay require to do?

324