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 are peak purity,peak purity index,peak thresold

2 17989

1)why use benzophenon,uracil in hplc calibration. 2)why use sucrose in polarimeter calibration. 3)what is S/N ratio, noise and drift in hplc 4)how we can find lod and loq in method validation

1 14769

What is (Q) point dissolution?

Cipla, Macleods,

6 26648

Why we are using K2Cr2O7 for control of absorbance in UV?

2 13375

1 why polyesterene film used for ftir calibration ? 2 why k2cr2o7 is used for control of abs in uv ? 3 why holmium oxide used for control of wavelength in uv

3 12850

what is the principal of malvern particle sizer & its used in pharma industry

3 9240

what is the difference between system precision and method precision?

Teva Pharmaceuticals,

3 36813

In lcms analysis some times we get sodium and potassium adducts. if the compound is havine sodium ions how can we confirm wether sodium is from sample or it is a adduct?

Teva Pharmaceuticals,

2 7584

what is difference between moisture contents and water contents ?

Cipla, Hetero, USM,

12 59740

In GC, What does 'Column condensation test' mean by?

Reddy Labs,

2 11479

same sample on two preapration gives differnt result during hplc analysis

3 8343

what is titrent,& titrate

Graviti Pharmaceuticals,

2 13671

Why we are using a Kf Factor range 4 to 6

7 60543

What is difference between Chromatographic purity and Related substances analysis?

3 23396

Why we are using the methanol in Kf titration?

Reddy Labs,

6 21718

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Un-Answered Questions { Analytical Chemistry }

IS THERE ANY EQUIPMENT TO CHECK AND CALCULATE THE POLARITY OF A LIQUID?

2425

How to do regeneration of Metacarb Pb plus column?

2541

What is the main difference between ODS1 and ODS2 Hplc column.

5168

How we can identify process related and degradation impurity in single method with short period?

780

all types of questions asked at the cipla interview

4650

What is aggregate and fragments in SEC?

2077

What is the difference between chromatographic purity and related substances?

1321

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

731

what is partion and column chromatography

2341

What is importance of pH in the Heavy metal test and How it effect on the test results?

2248

why cone formation during dissolution?

748

How we performed the force degradation for drug substance, is any specific guideline is available for each parameter(Acidic, basic, oxidation,heat)? what conditions you mentained for above parameters.

2282

could negative ions be produced by bombardment process in mass spectrometry?

1749

Why do we use KMnO4 in the test of control of obsorbance ? and why do we take specific quantity i.e 57-63mg?

2793

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

3177

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