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Analytical Chemistry Interview Questions
Questions Answers Views Company eMail

perchloric acid&glacal acetic acid both are acids but reaction is complete in volumetric titrations.how?

1 9982

what is the cleaning validation?

BioPlus,

1 8515

acetic acid is weak acid & perchloric acid is strong acid.but how perchloric acid is soluble in acetic acid

AVT, Hetero,

3 9718

What is polymorphism?which type of compounds exhibits polymorphism?

Torrent Pharma,

2 8039

what is the basic principle of conductivity meter

Hetero,

4 26897

Column selection in HPLC method development?

1 11540

How to prepare ppm solution of Nacl form its salt?

5 63644

what is mean by assay?

6 18604

why we are doing seal wash and needle wash?

3 14007

which functional group we can detect in IR?

3 10212

what is mean by UOD?

2 9039

what is mean by content uniformity?

5 8494

today i am doing calibration of HPLC. when i inject the blank it was going on -ve.(bleow then zero) why?

3 8710

what are the sources in ELSD,PDA, RI and UV Detectors?

1 7101

in karl fischer reagent which solvent is used for dissolving iodine sulphur dioxide and imidazole

Strides,

4 9262


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Un-Answered Questions { Analytical Chemistry }

if peak get problamatic then what require to do?

129


what is procedure of actual procedure for registration of drug?

1267


why does used dry caffien in HPLC calibration?

1337


What is rs test why we are performing rs test?

1033


why digestion require in icpms?

107






in which situation ion pair agent require to use?

92


what is the principle involved in turbidometry and nephelometry ?

3404


which lights using during force degradation?

120


Explain the relations between number of carbon atoms in alkanes and retention time ?

1413


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.

2349


how we can identify the impurity is coming below loq at transfering site?

131


What is the Formula for coreletion coefficient in plhplc calibration

964


In HPLC calibration, caffeine is used as primary standard for wave length calibration due to caffeine is having dual maxima at 273 & 205 nm and one minima at 245 nm. Any body can give reference of these details from any pharmacopeia (with chapter no.) or any other authentic guideline?

1257


how to set sample and standard concentration in RS method?

126


in which situation require to take incident in validation?

239