Analytical Chemistry Interview Questions
Questions Answers Views Company eMail

why urasil use in hplc column perfomance?

Bayer,

1 5507

how do you perform reverse enginearing study for drug containing sodium chloride sodium citrate sodium bicarbonate

Strides,

1 2216

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

Micro Labs, Adley,

1184




WHAT IS THE PURPOSE WE USE HCL, CHOPPER, BURNER, MONOCHROMATOR in AAS? PLEASE EXPLAIN BRIEFLY

996

what is the working priniciple of ph, what are parts in ph meter

1 6998

why using the ph 4,7,9.2?

SRF,

1 3160

What is Temperature ?

Reddy Labs,

2 7063

What is the column performance and column efficiency?

Reddy Labs,

1 8057




why we are using in ph calibrations ph4,7,9.2 buuffers only?

Reddy Labs, Unichem,

3 11853

Is it necessary to validate both assay and related substances for usp official methods for products.

Apotex,

6 8036

why we use a particular hplc column for a particular compound give reasons?please

Natco, Dr Reddys, Indoco Remedies,

1447

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

Reddy Labs,

1186

what is the difference between lod and loq?

Apotex,

4 25133

What should be the level/ Percentage of Arsenic in Arsenic free zinc.

Pharmaceutical, FDC, Laurus,

980

What is the exact reason to use THF and IPA in buffers of Reverse phase HPLC as a solvent?

Dr Reddys,

2429


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Un-Answered Questions { Analytical Chemistry }

In dissolution of tablets/capsules elaborate the Dissolution limit 20.0% to 60% Q in 30 minutes.

677


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

854


process of Diclofenac sodium,IP.

829


What is the pilot-plant in pharma sector.

924


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

1774






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


why lactose has less charges when packed in steel containers when compared with packing of lactose in polyamide material?

905


why we are using benzene, anyline in acetic anhdride assay titration method?

772


why 6 tablets use for dissolution

1806


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

1651


Why potassium dichromate is used in calibration of uv?

229


How much is the standard area for glc analysis

885


wat is the role of michelson interferometer in FTIR and He-Ne lase.detailed answer required in simple language

1025


What is the purpose of octyl silane columns?

2504


Principle of single pan analytical balance

3562