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

Analytical Chemistry Interview Questions

Questions Answers Views Company eMail

what is lod and loq

3 11628

what is lod and loq ?,why use k2cr2o7 , kcl h2so4 in uv calibration ?,why use benzophenone & caffene acetone in hplc calibration ?,what is leading peak in hplc ?why we do the calibration of limit of stry light in hplc & uv ?

Wockhardt,

3671

What is the b/W dead volume and dwell volume ?

2 14530

why r u using hplc grade solvents

4 12925

Why do we use sodium salicylate for Calibration TLC Cabinet U.V Lamps

Matrix, Spar Labs,

3 24746

How do you show that equal quanitities of two isomers provide the same response using a PDA

1 6304

what is GLP? Which industries it requried?

Aurobindo, AXIS Clinicals, GVK,

1 12547

How can we separate Urea & semicarbazide in single HPLC method ?

2 7291

What is the calibration procedure for Malvern MS2000 particle size analyzer and acceptance criteria?

Reddy Labs,

2 6114

why we can use only 4 and 7 and 9 buffers in pH calibration

Chola, Cipla,

1 5348

How to do regeneration of Metacarb Pb plus column?

2580

we calibrate HPLC once in 6 months while iam doing calibration i came to know that calibration was failed. then how can i justify that the samples analyzed on the system during this 6 months was wright? how can i forward in to the next step for those batches?

5 12795

What is the solvent/material used to balance spirit level in analytical balance?

Glenmark, MMC Health Care,

5 13744

why plane of polarized light rotated by opticaly active compunds?

Glenmark,

1 6333

why do we use around only 60 mg of K2cr2o7 in the UV calibration -control of absorbance test?

Reddy Labs,

3 14400

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Un-Answered Questions { Analytical Chemistry }

If suppose 10 methods of dissolution given in pharmacopoeial for single content product then which method out of 10? or all 10 require to follow?

1001

how require to interprit the method precision data of hptlc?

827

WHAT IS THE CRITERIA FOR SELECTION OF TIME OF DISSOLUTION AND THE MEDIUM OF DISSOLUTION?

2578

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

2152

in dissolution if one bowl got 70 percent 2nd bowl got 80 percent and 3rd bowl got 90 percent then how proceed?

759

why we are using hexane in calibration of number of drop per mL

1741

why lactose has less charges when packed in steel containers when compared with packing of lactose in polyamide material?

2307

if rsd failed then what require to do?

847

effect of pore size, pore volume, partical size, column length, carbon load on retention time? what is carbon load? what is the use?

935

HI,I CLEARED BOB CLERK EXAM. MY INTERVIEW WILL BE ON 9TH OCTOBER,2010.PLEASE SEND ME INTERVIEW QUESTIONS AND ANSWERS. THANK YOU.

2253

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

3251

What if impurity area in control sample coming more as compared to LOQ level of impurity ?

1605

what is diffrence between specificity and selecivity?

794

what is the structure of DOWEX-50

5521

How to calculate coreletion coefficient

1718

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