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

Analytical Chemistry Interview Questions

Questions Answers Views Company eMail

IF HPLC CALIBRATION FAILED THEN WHAT YOU DO

6 37014

Optical Rotation*0.9477*100*200] Assay Of dextrose= ________________________________ 99.8* 200 why Factor=0.9477

Claris Lifesciences, Inven Pharmaceuticals, Levo,

1 15715

How you will select the runtime in HPLC for a drug in method development.

Aurobindo, GVK, Lesanto Laboratories,

6 22381

If compound Pka is 5 then which buffer you will select ?

Avra, GVK,

5 16995

what is the difference between BDS and ODS Columens and both are same or not

Intas, IPQA, Micro Labs, Vasava Engineering Private Limited,

2 73820

difference between HPLC & LC-MS

Lambda,

9 47215

difference between record & document ?

4 14599

in what basis wavelength will select for a compound at initial method development trials

Matrix,

4 12805

How did you conclude that when stressing a compond, all degradation products have eluted in chromatogram?

Matrix,

7 12162

how to prepare working standard in our laboratory aganist reference standard ?

Merit Biolabs, Unichem,

4 25476

What is boiling point ? & Explain.

2 9140

What is Delay & Dead Volume

2 15085

In method developement or in any analysis if we use small length column for analysis what happen then ? why ?

3 8088

difference between IR& FTIR

Cadila,

4 16831

1 % solution is equal to how much ppm

32 429009

Post New Analytical Chemistry Questions

Un-Answered Questions { Analytical Chemistry }

inhouse product is in capsule form in combination and RLD is in tablet form then can we proceed for multimedia CDP? in inhouse capsule product disso is paddle with sinker in release media is there then RLD product in tablet form then with same as paddle with sinker we can proceed n.a.?

775

what is the purge flow & how to calculate

2733

How to compare XRD graphs against standard and carry polymorpism study of API's by powder XRD method?

3915

how require to set assay concentration for standard and sample?

975

how many types of balance calibration test?

2358

Why sodium hydroxide used for maintain pH of phosphate buffer

2486

if peak get problamatic then what require to do?

864

Is it nessesary all multimedia dissolution require descriminatory?

861

For standardization of volumetric solutions, acceptance limit for concentration is considered as 10% of nominal concentration and %RSD as NMT 0.2% (for appropriate no. of replicates). But , if %RSD has not met, what should be further action?

1967

For titration in anhydrous media with perchloric acide, if lack of titrator, Which indicator is been used for replacement. How calculate pH of test solution to choose suitable indicator?

2357

why octanol used to determine the partition coefficient ?

2499

What is the difference between spectro meter and spectro photo meter?

11620

what parameters we will consider while developing a HPLC method and how we confirm our HPLC method is valid?

3750

in monograph 7 imp are there but in vendor showing 5 imp do not req to include 2 imp for that what will be justification?

786

Why potassium dichromate is used in calibration of uv?

2039

For More Un-Answered { Analytical Chemistry } Questions Click Here