Analytical Chemistry Interview Questions
Questions Answers Views Company eMail

What is difference between Potency & purity

3 14152

how to hplc calibrated

Dr Reddys, Glochem,

4 51697

state the principle of gas chromatography?

5 12663

Why noise test is performed at 254 nm in calibration of HPLC system?

4 17395

some compound havving uv region but not give much more response during hplc analysis

2 6995

I have got selected for Aurobindo Pharma AR&D, HR person is asking me to sign in agreement. can I join?

Aurobindo,

19 41528

Why sulfuric acid is used in sulphated ash / residue on ignition test.

CS Pharmaceuticals, Dr Reddys, GVK, HPLC, Micro Labs, Samrudh, Watson Pharmaceuticals, Wings Customer Care,

9 76548

what are the basic requirement for the WHO audit?

BioPlus,

1 8750

What is the thickness of polystyrene film?

Pharmaffiliates Analytics and Synthetics,

8 18064

During Validation study, Recovery is passing at all levels but Linearity is failing. Justify?

Mylan, Torrent Pharma,

1 4409

What is Stray light ? & what is the IMP of this

2 9597

how can I make the copper get white bye any salt or acit?

1886

If we do accuracy at same concentration at which linearity planned,what is the need to do linearity separately?

1986

why we use only sucrose in the calibration of polarimeter?

Kilitch,

7 26693

What is the Deference between Bulk density & Tap density ?

Hikma Pharmaceuticals, Neuland, Reddy Labs,

2 24680


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Un-Answered Questions { Analytical Chemistry }

What is Band broading effect explain

1598


Identify problem faced when mass spectroscopy is used with HPLC system ?

1573


What is the difference between chromatographic purity and related substances?

1007


How do we fix the sample concentaryion in hplc method development?

848


analytical method validation require to with respect to release specification or shelf life specification?

471


which are the diffrent batches in the pharmaceuticals?

540


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

462


in sampling of raw material which side is pasted sampled labels

1506


Tell me about analytical method validation in QC

5871


In performance Check of GC Why Hexadecane Peak is Considered 

2757


How can we calculate "confidence interval" in analytical method validation? Pl. explain with example.

3836


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

2468


when we talk about change in entropy we consider total entropy means of surround +entropy of system but when we talk about change in Gibss free energy we consider entropy of system.explain with reason.

1756


if rsd failed then what require to do?

519


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

1916