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Analytical Chemistry Interview Questions
Questions Answers Views Company eMail

how does h2so4 prevent oxidation of mohr salt before it is titrated?

1 3125

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

1 2759

in HPLC injection volume is increase ,R.T will increase ?

Claris Lifesciences,

5 9731

How to caluculate the RRF and correction factor in hplc

Alkem Labs, Aurobindo, Rakshit Drugs, SDLPL,

1 14232

What is the optimum period of storage of indicators?

Orchid Chemicals and Pharmaceuticals,

1 4286

what is the most common FT-IR source used for the MID&Near IR regions?

Dr Reddys, Piramal Enterprises,

1 5257

How much carbon loading in nomalphase columns?

5 7579

Chromatographic Purity is a Qualitative analysis

Shasun Chemicals,

2 5289

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.

Atul,

1 2700

Why only hydroxy naphthol blue indicator is used for standardisation of 0.05M EDTA solution instead of solochrome Black T or Euriochrome Black T indicator which is used for all sample analysis with 0.05M EDTA solution?

2668

Why we use methanol as solvent in kf standardisation. Why not other solvent?

Caplin Point, Epione Labs, Hetero,

2 6810

if relative response factor is 1.07, to select how much value

Natco,

1 4333

What is the use of ELSD in HPLC?

Anthem,

3 6470

What is difference between FID and TCD in gas chromatography

Cipla, VPCPL,

1 10281

What is the difference between high pressure gradient and low pressure gradient in hplc?

Cipla,

1 7180


Post New Analytical Chemistry Questions

Un-Answered Questions { Analytical Chemistry }

What is intact assay method development.....?

2560


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

2119


What is split ratio in Gc? Splitless? how requirr to select?

821


Is it nessesary all multimedia dissolution require descriminatory?

744


In GC calibration,what is the procedure to calibrate the TCD (thermal counductivity detector)suggest ?

3121


How to know the estimated LOQ concentration in ppm

1156


In which situation we require to prepare the standard solution from sample in Related substance method?

714


Please tell me about the pH of Polycaboxylic ether is it in the 5-6 range ever or more than 6

2555


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

1976


How do we quantify crystaline and amarpous forms by using (NMR, XRD)spectroscopic techniques? Which any others instruments are useful for this quantification? explain

2341


What is gelatinization?

1575


What is mean by PDR?

862


what is the structure of DOWEX-50

5455


How can we calculate offset value pH measurment

1467


if rsd failed then what require to do?

764