Analytical Chemistry Interview Questions, Answers for Freshers and Experienced asked in various Company Job Interviews

Analytical Chemistry Interview Questions

Questions Answers Views Company eMail

Difference between uv detector nd RI DETECTOR? wt s the difference between OVI Solvents nd residual solvents incase of GAS CHROMATOGRAPHY? nd wt s its detection limit?

3 15991

on what basis SOP's can be changed? IF mobile phase ratio is 70:30 to how much % can we change the ratio in HPLC process

Cipla, Ranbaxy,

7 17560

Why caffeine as a reference standard used for calibration of HPLC?

Gangwal Chemicals, Orchid,

11 57885

What is the composition of K.F

IPQA,

6 42445

What should be the precision for HPLC during technology transfer?

3 9834

how do start hplc method development? how much sample required for developing the method development?

BMS, Cipla, Indoco Remedies, Sun Pharma,

3 52808

Wt s the use of linearity in HPLC method validation

4 16547

which pharmacopeoia mentions that caffiene is used as a standard for HPLC calibration? which other standardscan be used for the same?

Hetero, Mylan,

1 9190

Why will a solution of aspirin without acid or basic hydrolysis give yellow colour with a solution of Ferric chloride?

1 5782

Why do we use 0.005M h2so4 solution for preparation of k2cr2o7 solution for UV calibration?

Jubilant, Medreich, Mylan,

3 25319

In HPLC what is Single point threshold, peak purity index and minimum peak purity index? what should be consider for pure peak.

3 32354

why the sucrose used in calibration of polarimeter

Neuland,

5 16550

what r the parts calibrated in gc

ELBS, Reddy Labs,

21 38579

acceptance criteria for ph meter, hplc detector,pump,injector,oven when we calibrate.

3 24899

is there any material other than caffene to calibrate hplc detector

Biocon,

13 30023

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Un-Answered Questions { Analytical Chemistry }

what is difference between UV - VISIBLE MODEL NO like 1600,1601,1700 etc ? plz explain me

2684

How can we confirm the HPLC column is end-capped or not? Is it possible to identify by physical appearance?

3218

How to establish relative response factor for hplc. Why it is required?

1228

Why only 1.2 million lux hours require in photostability study?

1037

What is diffrence between extractable volume and deliverable volume? Answer pls

4573

what is classification of elemental impurities? what is risk assement in elemental impurities?

760

Ph meter can show more than 14 ph reading? Why ph range in between 1 to 14 only?

741

How can we calculate offset value pH measurment

1510

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

3178

what is third integration

1976

how you determine moist.of NaOH sol or NaOH flacks

2222

Which type of column should i use to check the purity of high molecular weight protein using HPLC reverse phase column chromatography? Hi everyone. I wanna to check the purity of high molecular weight protein (collagen) with MW of ~130 kDa using a HPLC. I know C18

1917

What is the formula to determine the concentration of M of a solution given the % transmittance? Use %T = 43.7 as an example.

2687

what is the importance of peak purity in HPLC and how we can calculate through manul(not software)?

4489

what is mean by peak intigrity?

953

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