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 urasil use in hplc column perfomance?

Bayer,

1 8877

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

Strides,

1 4445

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

Adley, Micro Labs,

2487

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

2571

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

1 10020

why using the ph 4,7,9.2?

SRF,

1 6068

What is Temperature ?

Reddy Labs,

2 10503

What is the column performance and column efficiency?

Reddy Labs,

1 11009

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

Reddy Labs, Unichem,

3 17653

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

Apotex,

6 13964

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

Dr Reddys, Indoco Remedies, Natco,

2693

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

Reddy Labs,

2399

what is the difference between lod and loq?

Apotex, Aurobindo,

4 37158

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

FDC, Laurus, Pharmaceutical,

2183

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

Dr Reddys,

1 5055

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Un-Answered Questions { Analytical Chemistry }

what is procedure of actual procedure for registration of drug?

1966

what is mean by nitrosamine impurities?

1021

What is delay volume?

1331

what is impurity profile. how to interpret this impurity profile to a drug product or drug substance.

2590

pharma industries oriented

2184

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

691

how to qualify the impurity?

793

Why irmoisture balance is used for corrugated box moisture testing

2365

how to decide for one product require water content or LOD?

730

in which situation require to change rs specification?

709

in hplc chromatogram started from left to right and in uv spectrum started from left to right

897

In Dissolution Test why limit is define Q+5% what is the role of +5%.

3052

CAN WE DETERMINE THE PEAK PURITY IN GAS CHROMATOGRAPHY ANALYSIS?

1157

In HPLC calibration, caffeine is used as primary standard for wave length calibration due to caffeine is having dual maxima at 273 & 205 nm and one minima at 245 nm. Any body can give reference of these details from any pharmacopeia (with chapter no.) or any other authentic guideline?

1920

what is the importance of peak purity in HPLC and how we can calculate through manul(not software)?

4430

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