Analytical Chemistry Interview Questions
Questions Answers Views Company eMail

Why we use caffeine for HPLC calibration in Detector wave ength accuracy test

Reddy Labs, Aurobindo, Cipla, Arvind, Shasun Chemicals,

59 142205

Why we use holmium oxide,perchloric acid for uv/vis calibration

Cipla, Ratiopharm, Orchid,

4 19836

Why Deuterium lamp is used as UV light Source for UV.

4 12843




What is principle of Polarimeter?

Intas,

21 63422

What is unit of KF?

ZCL,

7 32302

what is principle of XRD?

Cipla,

3 21530

What is unit of pH?

26 34484

How to calibrate glassware against std calibrated glassware?

Cadila, Hetero,

3 9505




One pH means how much volts and milivolts?

Dr Reddys,

7 22095

Why sodium lamp is used as source of Polarimeter?

NCL, Zydus Cadila, College School Exams Tests, Hetero,

12 43283

why there is a need of optical activity & specific optical activity measurement by polarimeter

Cadila,

6 8733

What is normality

Cadila,

12 16002

what is principal of karl ficher instrument!

Alkem Labs, USV,

12 27736

How many clauses in ISO!

1 9009

Why 10%,20%,30% Sucrose solution is used for the calibration of polarimeter?

Cipla, LGC Promochem,

5 19070


Post New Analytical Chemistry Questions






Un-Answered Questions { Analytical Chemistry }

WHY given much noise PDA dector then VWD Dector

644


How to determine water content of bis tetrazole amine mono ammonium salt

1896


in dissolution why pool sample needed? in which type of drug pool sample need?

1808


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

1353


why 6 tablets use for dissolution

1854






what is the limit for KF Factor ,we take factor using water we will found factor between 6 to 7 ,while on KF Reagent bottle mentioned 5 mg/ml water content.if we not use dried methanol it is effect on factor.

684


USP methodology, EP methodology, IP methodology, among three if possible to use one methodology for qualify working standard to use USP, EP, IP ? Please explain...

530


WHICH STANDARD WE USE IN SILICA ANALYSIS IN SILICA-GEL METHOD FOR SOLID SAMPLE

845


what is turbidimetric titration?Give 2 examples.

1051


what is different when impergnated silica plates are used in separation of azo dyes using column chromatography?

668


Tell me about analytical method validation in QC

1787


about method developement in hplc

374


Qc interview questions

326


4. Describe the operation of the Craig apparatus. Chapter.3 Equilibrium Processes in Separations

1257


why disodium tartarate used in karl-fischer instrument ?.

688