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Analytical Chemistry Interview Questions
Questions Answers Views Company eMail

when we use pda detector in hplc instead of uv detector

Hetero,

6 21697

why we use holmiumperchlorate in calibrating uv

Aurobindo, DRL, MSN Pharma,

4 15694

why chiral compounds will rotate the plane polarized light in SoR.

GVK,

4 12472

Why sulpuric acid only used to ROI but not used nitric acid and some other acids?

Cadila, Laurus, Ranbaxy,

7 26261

how we do assay of urea, ammonium sulpate, ammonium nitro pospate etc

Alembic,

1 2441

what is difference of uv and pda

Akums, MSN, MSN Pharma, Shilpa Medicare,

13 64436

how can you do the analysis of compound given to u by hplc

2 7198

What is calibration procedure of gredient HPLC pump

4 23441

How to determine water content of thioanisole? which interfere by KF titration?

1 6575

what is dissolution

DRL,

6 24554

What is colimn selection Criteria in HPLC analysis?

4 13516

How to select buffer for HPLC mobile phase

Cadila, Cipla, Lupin,

4 20582

What is primary & Secondary Standard ? Give Example

Cipla, Lupin,

17 159000

Which buffer is used for LC/MS mobile phase & at What Conc.

3 9480

How we fix the validity period of a Normal solution and re-standardization due date

3 7299


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Un-Answered Questions { Analytical Chemistry }

IS THERE ANY EQUIPMENT TO CHECK AND CALCULATE THE POLARITY OF A LIQUID?

1820


what is partion and column chromatography

1626


how will you do the prep for unstable componds?

1278


Ratio of Water and Acetonitrile(diluent) is not recommended to use in cleaning method validation,why?

2311


Qc interview questions

1077






which lights using during force degradation?

122


in which situation ion pair require to use?

103


Why use only methanol,used determinationof moisture content not use other solvents

606


WHAT IS DIFFERENCE B/W MALTINGRANG/DSC

1757


If we have 5 strength which is not dose proportinate and excipients also diffrent in each strength then how we can proceed for Force degradation? and excipient are same but not dose propotinate the how FD?

115


sop of a uv visible spectrophotometer double beam elico model

5077


why require the ph, buffer during hplc mobile phase?

180


WHAT IS THE CRITERIA FOR SELECTION OF TIME OF DISSOLUTION AND THE MEDIUM OF DISSOLUTION?

1976


mode of absorption in alimentary canal?

1756


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

1861