Analytical Chemistry Interview Questions
Questions Answers Views Company eMail

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

1 774

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

709

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

Claris Lifesciences,

5 4908




How to caluculate the RRF and correction factor in hplc

Aurobindo, Alkem Labs, Rakshit Drugs, SDLPL,

1 6446

What is the optimum period of storage of indicators?

Orchid Chemicals and Pharmaceuticals,

1 2295

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

Dr Reddys, Piramal Enterprises,

1 2903

How much carbon loading in nomalphase columns?

5 2658

Chromatographic Purity is a Qualitative analysis

Shasun Chemicals,

2 2392




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,

684

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?

973

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

Caplin Point, Epione Labs, Hetero,

1 3367

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

Natco,

1 2152

What is the use of ELSD in HPLC?

Anthem,

3 2610

What is difference between FID and TCD in gas chromatography

VPCPL, Cipla,

1 4618

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

Cipla,

1 3633


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Un-Answered Questions { Analytical Chemistry }

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

1186


what is separation techniques.

1321


what is partion and column chromatography

1025


What is method validation in quality control

2382


How can we calculate offset value pH measurment

185






Principle of single pan analytical balance

3629


what is the different in Total ash, sulphated ash, acid insoluble ash, alcoholic or non alcoholic ash?

6934


How we can determine water content in piperazine

872


what is the difference between potentiometric titration and karl fischer titration?

1054


EXPLAIN THE CALCULATION PART OF AN KF TITRATOR CALIBRATION WITH SUITABLE EXAMPLE

1311


WHAT IS DIFFERENCE B/W MALTINGRANG/DSC

1139


How can the GC or HPLC method is selected to determine the impurity profile in drug product?

5387


Why do we use KMnO4 in the test of control of obsorbance ? and why do we take specific quantity i.e 57-63mg?

1280


Why irmoisture balance is used for corrugated box moisture testing

1037


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

1045