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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 3274

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

1 2898

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

Claris Lifesciences,

5 10172

How to caluculate the RRF and correction factor in hplc

Alkem Labs, Aurobindo, Rakshit Drugs, SDLPL,

1 14487

What is the optimum period of storage of indicators?

Orchid Chemicals and Pharmaceuticals,

1 4463

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

Dr Reddys, Piramal Enterprises,

1 5469

How much carbon loading in nomalphase columns?

5 8001

Chromatographic Purity is a Qualitative analysis

Shasun Chemicals,

2 5506

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 2865

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?

2784

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

Caplin Point, Epione Labs, Hetero,

2 7046

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

Natco,

1 4514

What is the use of ELSD in HPLC?

Anthem,

3 6722

What is difference between FID and TCD in gas chromatography

Cipla, VPCPL,

1 10556

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

Cipla,

1 7392


Post New Analytical Chemistry Questions

Un-Answered Questions { Analytical Chemistry }

What is the difference between spectro meter and spectro photo meter?

11615


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

3020


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

3302


Did anybody have method for acetyl cysteine effervescnce tablet

2298


How to calculation of residual solvent methanol (3000 ppm) standard solution, and how many quantity used of test sample

3328


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?

2784


How to compare XRD graphs against standard and carry polymorpism study of API's by powder XRD method?

3909


if instrument calibration fails then what require to do?

1017


What is column in chromatography?

2289


Colorimtry

1700


Explain the relations between number of carbon atoms in alkanes and retention time ?

2205


we can use expired sample for validation and analyst qualification?

861


in api coa contains only process impurities and in product coa contains degradation impurities?

733


i want model written test paper for the post of analyst in IOCL(indian oil corporation ltd) any one pls help me

2779


what is the acceptance criteria for enteric coated tablets in 0.1n hcl validation in each parameter?

941