Analytical Chemistry Interview Questions
Questions Answers Views Company eMail

why urasil use in hplc column perfomance?

Bayer,

1 8070

how do you perform reverse enginearing study for drug containing sodium chloride sodium citrate sodium bicarbonate

Strides,

1 3911

How will u perform degradation study in detectors other thann PDA in HPLC Methodology

Adley, Micro Labs,

2224

WHAT IS THE PURPOSE WE USE HCL, CHOPPER, BURNER, MONOCHROMATOR in AAS? PLEASE EXPLAIN BRIEFLY

2326

what is the working priniciple of ph, what are parts in ph meter

1 9553

why using the ph 4,7,9.2?

SRF,

1 5547

What is Temperature ?

Reddy Labs,

2 9957

What is the column performance and column efficiency?

Reddy Labs,

1 10564

why we are using in ph calibrations ph4,7,9.2 buuffers only?

Reddy Labs, Unichem,

3 16912

Is it necessary to validate both assay and related substances for usp official methods for products.

Apotex,

6 12732

why we use a particular hplc column for a particular compound give reasons?please

Dr Reddys, Indoco Remedies, Natco,

2445

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

Reddy Labs,

2136

what is the difference between lod and loq?

Apotex, Aurobindo,

4 35889

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

FDC, Laurus, Pharmaceutical,

1931

What is the exact reason to use THF and IPA in buffers of Reverse phase HPLC as a solvent?

Dr Reddys,

1 4552


Post New Analytical Chemistry Questions

Un-Answered Questions { Analytical Chemistry }

What is rs test why we are performing rs test?

1493


EXPLAIN THE CALCULATION PART OF AN KF TITRATOR CALIBRATION WITH SUITABLE EXAMPLE

2311


why sre you used Potassium hydrogen phthalate in standarisation of 1N NaOH and 0.1 N Perchloric Acid?

9279


How can we calculate offset value pH measurment

1239


Is it nessesary all multimedia dissolution require descriminatory?

502






how can I make the copper get white bye any salt or acit?

1851


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?

3197


why glutent are detected in the rice cereal baby food product even manufacturer claimed that they are using rice and milk only?we have using ELISA to do the test,and rice supposed not containing any glutent,rite?We already repeat the test so many times and it still detected.just wondering where the glutent came from?

2499


if your product is soluble in 0.1n hcl and water then which you choose as media from these 2 media?

427


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

472


How require to develop GC method? how to select diluent, GAS, column selection and other chromatographic conditions?

452


what is mean by peak intigrity?

533


why are measure gas flow " ml " in Gas chromatography

1328


What is the principle of HPLC, GC, LCMS, GCMS,LC QQQ, GC QQQ, LC Q TOF and GC Q TOF. What are the applications and Specificity?

8563


all types of questions asked at the cipla interview

4356