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

Analytical Chemistry Interview Questions

Questions Answers Views Company eMail

when we use pda detector in hplc instead of uv detector

Hetero,

6 25082

why we use holmiumperchlorate in calibrating uv

Aurobindo, DRL, MSN Pharma,

4 18330

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

GVK,

4 15066

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

Cadila, Laurus, Ranbaxy,

7 32411

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

Alembic,

1 3779

what is difference of uv and pda

Akums, MSN, MSN Pharma, Shilpa Medicare,

13 70022

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

2 8477

What is calibration procedure of gredient HPLC pump

4 25454

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

1 7645

what is dissolution

DRL,

6 28101

What is colimn selection Criteria in HPLC analysis?

4 15753

How to select buffer for HPLC mobile phase

Cadila, Cipla, Lupin,

4 22970

What is primary & Secondary Standard ? Give Example

Cipla, Lupin,

17 166334

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

3 11303

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

3 9155

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Un-Answered Questions { Analytical Chemistry }

Principle of single pan analytical balance

5094

What are the primary considerations in extractables and Leachables ?

2215

why require to do water content for drug product?

786

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

1033

how require to select dissolution media? what is discrimination?

750

Why are use silicon oil mr?

1157

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?

2265

WHAT IS THE USE OF STARTER ?????????

2362

What is the formula to determine the concentration of M of a solution given the % transmittance? Use %T = 43.7 as an example.

2607

what are the standard methods for HPLC?

2737

why are measure gas flow " ml " in Gas chromatography

1602

Why only Copper standard is used to calibrate Atomic Absorption spectrophotometer?

2672

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

1362

What is viod volume and peak purity in HPLC?

2821

How require to perform linearity as per ANVISA? What are the acceptance criteria?

1275

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