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

Analytical Chemistry Interview Questions

Questions Answers Views Company eMail

in dissolution in one tablets two molecule one is losartan & second is HCTZ losartam is complies in s1 stage & hctz is complies in s2 stage then how to report result losartan s1 stage result or losartan s2 stage result

Dishman,

1 2802

why we use polystyrene film for ftir calibration?

Rakshit Drugs,

4 19270

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

GVK,

2578

why do we adjusted ph in the mobilphase

Cipla, Dr Reddys, Reddy Labs,

9 25332

How to develop the method when we have very low amount of impurity?

2 8310

If we have 120 minutes run time method for HPLC and you wan to decrease the Run time so what should you do??

6 13869

Wath is the differenc between two column HPLC wich have the samme support , lenth , pore size, etc.. But different name .for exemple : Spherisorb / lichrosorb

NDA,

2 8069

WHAT IS PVT TEST IN DISSOLUTION TEST , WHAT IS PVT SIGNIFICANCE AND HOW IT IS PERFORMED ?

1 7552

2322

How you will select column for HPLC development depends on nature of compound and how it will work explain in brief?

3 10979

What is the role of SO2,I2, Methanolic hydroxide and any base in Karlficher titration

Medley Pharmaceuticals,

2 9280

The boiling point of 1,3 butadiene is -4.4 DC & the boiling point of Pentane is 36.1 DC. Then how come Pentane elute before 1,3 BD in GC analysis?

1 5456

What is Arsenic Test?

Flamingo Pharmaceuticals,

2506

What is the difference between Optical rotation and Spcefic optical rotation

IPCA, Matrix,

2 13567

why we use sodium salicylate in uv light calibration at TLC chamber

Aurobindo, Lee Pharma,

1 9043

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Un-Answered Questions { Analytical Chemistry }

What should be the level/ Percentage of Arsenic in Arsenic free zinc.

2233

why digestion require in icpms?

774

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

2578

What is stray light in uv what are units for stray light

1652

How to choose the which salt is suitable for mobilephase

3250

give clarity of linearity and range in method validation

2420

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

4573

What is the accrptance criteria in RSD for RS method precision on basis of impurity percentages?

825

can we use the same detector in HPLC as well GC and what could be the differences we can find in the final chromato graph in any aspects?

2183

What is the difference between Discriminating media and DPDM(Dissolution Profile with Different Media)

7545

I have compare C2H2-air and C2H2-N2O flame AAS on determination calcium. Both use same range of std to plot calibration curve. (2-6ppm) When i measure the sample with phosphate, KCl and LaCl, C2H2-N2O flame give false positive result, around 0.5ppm. When i measure the sample with phosphste, KCl and EDTA. C2H2-N2O flame also give 0.5ppm false positive. But both above mentioned sample would not give false positive when measured by C2H2-air flame. What is the reason?

3540

How much is the standard area for glc analysis

2287

how much mass should be there in volumetric flask while in preparation of sample for assay?

2580

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

2735

If vendor having more imp than monograph then how to proceed? and how to set spec?

935

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