Analytical Chemistry Interview Questions
Questions Answers Views Company eMail

for heavy metal test lead used in which form pure form or any other form for preparation of lead standard sol

Watson Pharmaceuticals,

1 3496

we run the same sample in same method in different flow rates in HPLC,any changes in sample analysis?

2 4642

For limit test of heavy metals in BP, Method C require that the substance is ignited at a temperature not exceeding 800 °C. Why confines such the temperature?

2274




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?

827

if the flow rate is increases then any changes in retention time in hplc

1 5267

Whatn is HPLC

HPLC, Orchid, Jubilant,

1 4537

what is the limit of Correlation for IR test compare to the standard and test

Nakoda Chemicals,

3 5537

IS THERE ANYWHERE MENTION THAT THE RE PROCESS BATCH REQUIRE TO KEPT STABILITY STYDY

Nakoda Chemicals,

2 3584




why holmium perchloate solution in Uv calibration

Alembic,

2 7454

why do we have to used saturated ammonia in TLC

Mylan, Cipla, IPCL,

3 7773

stability study is going on up to 3years for famotidine-USP but the pharmacopeia is revised and tlc test is replaced with hplc test. At the 4th year frequency the product is failed in hplc test .how can i assain the expiry or retest date and can i stop or continue the programme?

Nakoda Chemicals,

2 3537

how to correct peak when peak comes broader in shape? How to do calibration of HPLC?

Mankind,

2 5197

HOW TO CALIBRATE HPLC OVEN

Mylan,

1 4198

What is importance of pH in the Heavy metal test and How it effect on the test results?

895

which light is used in FT-IR spectroscopy

Hetero,

6 11640


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Un-Answered Questions { Analytical Chemistry }

What is diffrence between extractable volume and deliverable volume? Answer pls

628


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

5715


can we use the same detector in HPLC as well GC and what could be the differences we can find in the final chromato graph in any aspects?

863


what is the origin to prepare standard operating procedure

914


what is third integration

660






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 ?

1105


As per ICH related substances stability trend limit from initial to shelf life

1654


why equlirium conatant of water have 14 value

873


For limit test of heavy metals in BP, Method C require that the substance is ignited at a temperature not exceeding 800 °C. Why confines such the temperature?

2274


what is the structure of DOWEX-50

3566


why sre you used Potassium hydrogen phthalate in standarisation of 1N NaOH and 0.1 N Perchloric Acid?

6656


calibrtion procedue of LC-MS

1208


What is control room temperature and which guide line says?

285


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

921


How do we quantify crystaline and amarpous forms by using (NMR, XRD)spectroscopic techniques? Which any others instruments are useful for this quantification? explain

1108