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Chemistry Interview Questions
Questions Answers Views Company eMail

While performing TOC sst analysis Zero shift disabled & sample analysis zero shift enabled why?

 2351

which one is better separation in high pressure liquide chromatogram orlowpressure chromato gram in hplc

Hetero,

1725

In which cases factor of KF Reaget got higher side

 2 5575

Why sucrose used in calibration of polarimeter

Lupin,

1 3785

what is the concept for adjustment of pH in HPLC buffer solution ? a. Common ion effect b. Counter ion effect and explain me, how we adapt this principles & what is the role of these principles in our method

Apex, Pentagon Labs,

1 2650

What is the difference between BD

 1 2322

why water content test performed

 1 5348

What is peak purity and response factor in chromatographic analysis? Why we required to find out response factor?

 2 6351

What are modes of quantification in related substances

Hospira,

1718

what is the source of ir spectroscopy

CTX Life Sciences, Mylan,

2 6445

Difference Between End Cap HPLC Column and Non End Cap Column

 2 13190

What precaution u take when doing rs preparing

DRL,

1632

Which type of column should i use to check the purity of high molecular weight protein using HPLC reverse phase column chromatography? Hi everyone. I wanna to check the purity of high molecular weight protein (collagen) with MW of ~130 kDa using a HPLC. I know C18

Petronas, Shanghai Ocean University,

1458

How would you decide dissolution medium for NCE compound of class I drug

 1703

which gas is called laughing gas?

 2 3897

Un-Answered Questions { Chemistry }

Explain why acetic has less conductivity than hcl?

585

How are ph and pka related?

622

Related substance method equivalency on control sample or spiked sample?

304

how require to select dissolution media? what is discrimination?

311

What are constituents of brass?

740




what is turbidimetric titration?Give 2 examples.

1986

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

2139

Why we have to add 200mg Na2CO3 in preparation of 0.1N sodium thiosulfate solution?

1130

what is classification of elemental impurities? what is risk assement in elemental impurities?

340

why is mgcl used in edta titration

1104

In what ways can Actinium be used in conjunction with other elements or compounds to create new materials or compounds with specific properties?

149

Why titration in which hcl and h2so4 is use?

584

What is molality?

562

what are the guidelines for analytical method validations?

593

Explain extraction of ephedrine from a mineral block?

584

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