Analytical Chemistry Interview Questions
Questions Answers Views Company eMail

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

1 2405

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

1 2068

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

Claris Lifesciences,

5 8189

How to caluculate the RRF and correction factor in hplc

Alkem Labs, Aurobindo, Rakshit Drugs, SDLPL,

1 12733

What is the optimum period of storage of indicators?

Orchid Chemicals and Pharmaceuticals,

1 3638

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

Dr Reddys, Piramal Enterprises,

1 4460

How much carbon loading in nomalphase columns?

5 5808

Chromatographic Purity is a Qualitative analysis

Shasun Chemicals,

2 4391

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 1869

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?

2190

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

Caplin Point, Epione Labs, Hetero,

2 5808

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

Natco,

1 3689

What is the use of ELSD in HPLC?

Anthem,

3 5224

What is difference between FID and TCD in gas chromatography

Cipla, VPCPL,

1 9230

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

Cipla,

1 6356


Post New Analytical Chemistry Questions

Un-Answered Questions { Analytical Chemistry }

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

2581


if instrument calibration fails then what require to do?

451


What is the difference between Discriminating media and DPDM(Dissolution Profile with Different Media)

6858


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

2097


What is the principle of Thermal conductivity detector and FID?

2249






Please give idea about method development for cleaning method and how maco level establish

260




1804


Ratio of Water and Acetonitrile(diluent) is not recommended to use in cleaning method validation,why?

2461


What is gelatinization?

1160


we can use expired sample for validation and analyst qualification?

289


function of detecter in hplc ,gc and spectroscopy? function of carrier gas in gc?

2053


Difference between the quantitative analysis and qualitative analysis?

610


How to set specification of assay, fisdolution and related substances?

352


Why perchloric acid used for potentiometric titration

2147


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

2263