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Analytical Chemistry Interview Questions
Questions Answers Views Company eMail

what is dwell volume in HPLC?

Aurobindo, Cadila, Strides, SUN, Sun Pharma,

2 7935

what does pH stand for?

Orchid,

4 8493

Definition of beers_ lamberts law

Aarti Industries, Agio Pharmaceuticals, Emcure, Supriya Lifescience,

4 8362

Why monograph of hplc coming upperside of drift but in IR monograph coming in drift side?

1 4184

Why a1% value is used for some product ? What is the criteria for selection a1% value ?

Zim Laboratories,

2346

Why the ph limit (1_14) Is used?

Cipla,

3 8369

What is cut off value of solvent used in hplc

Pfizer,

1 6596

How to calculate mass balance in RS after degradation

Reddy Labs,

1 6092

if out of two set of results of moisture analysis first 1 is passing, second one is failing, is it oos ? or vice a versa first 1 is failing and second one is passing. for information mean value to be reported and in mean value the substance is ppassing, is it oos or normaal mean value to be considered?

JBCPL,

1 3680

Can we interpret accuracy from linearity in method validation?

Dr Reddys, Lupin,

1 3037

What is aggregate and fragments in SEC?

2111

how pyridine can be analysed other than GC?

1 4322

What is the calibration of uv process and preparation

Aurobindo,

1997

How to prepare 1000ppm methylene blue solution

2 21319

Identify problem faced when mass spectroscopy is used with HPLC system ?

College School Exams Tests,

1861


Post New Analytical Chemistry Questions

Un-Answered Questions { Analytical Chemistry }

If we do accuracy at same concentration at which linearity planned,what is the need to do linearity separately?

2302


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

2833


How to set analytical specification for combination products?

818


What is the formula to determine the concentration of M of a solution given the % transmittance? Use %T = 43.7 as an example.

2682


mahagenco syllabus for the post of chemist

6476


in api coa contains only process impurities and in product coa contains degradation impurities?

701


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

1781


why we use glass fiber filters use in some situation?

800


how to calculate elemental impurities?

1032


which are the sizes of capsules?

964


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?

2313


Which products will produce when acetic anhydride reacts with Ter-butanol, Sec-butanol, Iso butanol, Dimethylamine etc.

2865


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.?

715


in stress study if your api not soluble in hcl naoh h2o2 then what require to do?

836


What is third generation HPLC Columns?

1981