Analytical Chemistry Interview Questions, Answers for Freshers and Experienced asked in various Company Job Interviews

Analytical Chemistry Interview Questions

Questions Answers Views Company eMail

why reference flow required during hplc analysis on rid?

1 5754

why hydrogen and zero air used for flame ignition in gc?

1 9362

How we get DST moisture 15.4-16.0%. what is the calculation or method behind it.

2 27650

What is viod volume and peak purity in HPLC?

2823

what is the results if we use ODScolumn instead of BDS column ,(ther parameter is same for column) in assay method ?

3 10944

How we performed the force degradation for drug substance, is any specific guideline is available for each parameter(Acidic, basic, oxidation,heat)? what conditions you mentained for above parameters.

2263

what is the use of tap density apparatus? why we calculate it? what is the difference between the bulk density and tap density?

Alchemist, Alembic, Apex,

1 5137

from where i get mortar pastle for glass bottle crush? it's required for testing of it?

2237

what is the procedure for cleaning of lenses of hatr accesory of ftir instrument?

2232

What is the difference between void volume and delay volume in HPLC?

3 19869

What is the purpose of octyl silane columns?

4251

how many types of Proceing methods?

Reddy Labs,

8 14079

What is the column performance and column efficiency?

Reddy Labs,

2 15905

What are the primary standards?

6 13309

why we want incorporate area of each solution of Intermediate precision and repeatability as well as Accuracy ? What is the use to incorporate area of each solution of Intermediate precision and repeatability as well as Accuracy ?

1 4526

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Un-Answered Questions { Analytical Chemistry }

1.What is the difference between method validation and method verification 2.Which guidelines proposed to method transfer

1804

i want model written test paper for the post of analyst in IOCL(indian oil corporation ltd) any one pls help me

2679

what is definition of validation? which components are followed give detail?

2301

how much mass should be there in volumetric flask while in preparation of sample for assay?

2520

How require to develop GC method? how to select diluent, GAS, column selection and other chromatographic conditions?

691

[3/28, 20:52] Manoj P Venkatpurwar: how many impurities require to inject in assay specificity that how we can find out? and in Rs also how?

754

in DMF having extra impurities and in api COA also having extra imp than USP or BP product then how require to proceed?

781

What is delay volume?

1331

is it nessesary to do solution stability for 7 days?

729

Basic principle of ESI?

2103

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

2140

How we can identify process related and degradation impurity in single method with short period?

765

While performing TOC sst analysis Zero shift disabled & sample analysis zero shift enabled why?

2796

What is the accrptance criteria in RSD for RS method precision on basis of impurity percentages?

778

How do we fix the sample concentaryion in hplc method development?

1093

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