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

General Chemistry (478)
Chemistry AllOther (190)

Chemistry Interview Questions

Questions Answers Views Company eMail

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

741

How to set specification of assay, fisdolution and related substances?

882

how to qualify the impurity?

874

what is the acceptance criteria for enteric coated tablets in 0.1n hcl validation in each parameter?

890

What is the formula for relative diffrence for standard solution in solution stability in validation?

801

How require to perform linearity as per ANVISA? What are the acceptance criteria?

1336

[3/30, 13:29] Manoj P Venkatpurwar: How hplc column selection according to structure? How mobile phase buffer selection on molecule structure?

791

in api coa analytical method given as Ph Europe which api used in formulation in this api coa method given Ph Europe so for Analytical methic for finished product we require to refer Ph Europe monograph ok n.a.? So any extra impurities which is given in USP monograph of api or finished product need not require to monitor on above case n.a.? but how require to do specificity?

601

in DMF having extra impurities and in api COA also having extra imp than USP or BP product then how require to proceed?

836

we can use expired sample for validation and analyst qualification?

812

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

935

If change in specification which parameter require to do for validation? if change in chromtographic condition then which parameter? if api change then which parameter? if change composition then which parameter? if old method not work out then whicj parameter? if additional one impurity added then which parameter of validation require to do on above each conditions? elaborate separately

856

how require to set assay concentration for standard and sample?

922

What is dose dumping? why require to do?

951

Please give idea about method development for cleaning method and how maco level establish

748

Un-Answered Questions { Chemistry }

In what ways can Protactinium isotopes be used to study fundamental particle interactions and properties?

585

what is mean by dissolution hydrodynamics?

826

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

2833

What is the function of diethyl amine?

1105

What is mean by PDR?

948

What is fluidity of a liquid?

1088

why are measure gas flow " ml " in Gas chromatography

1661

What is glacial acetic acid?

1062

Why is ammonium hydroxide added to the brass solution?

1301

why does used dry caffien in HPLC calibration?

2032

If inhouse hplc related substance method is completly diffrent from Usp for finished proďuct with diffrent impurities then how require to prove method equivalecy?

773

In pickling process of titatium with HCL . how to know if the acid is not effective after pickling several batch. is there any test to know it. (not practically)

1680

sir, what does happen ............? naphthal+benzene(or)toluee........> ?

2175

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

825

How is temporary hardness be removed?

1071

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