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

how much tds is ok for drinking water

1 5497

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 12947

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

3 9339

what is the difference between system precision and method precision?

Teva Pharmaceuticals,

3 36969

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 7671

How we can differentiate between oxalic acid and tartaric Acid?

5 14482

why we use sulphuric acid in the experiment of measure absorpance of K2Cr2O7 and KMnO4?

1 5855

how can karl fischer's titration be used to estimate alcohols??????

2732

what is difference between moisture contents and water contents ?

Cipla, Hetero, USM,

12 60082

pH is having unit?

Cipla,

8 13283

What is the easiest, (Less compound mixtures, basically), way to make coca.. ;)

2326

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

Reddy Labs,

2 11586

same sample on two preapration gives differnt result during hplc analysis

3 8460

what is titrent,& titrate

Graviti Pharmaceuticals,

2 13767

Why we are using a Kf Factor range 4 to 6

7 60795

Un-Answered Questions { Chemistry }

how to selecet an exact coloumn for an new molecule development by hplc how to select exact salt as buffer for new molecule development by hplc what is the the process to select the mode of saparation of compoundes by hplc what is the use of ph of buffer what is use of buffer,ph,organic phase,ans methods how the molecules get saparated in coloumn,

2602

How are pka and strength of a weak acid related?

1041

What kinds of structural changes accompany bond-breaking and bond-forming in olefin polymerization? : Polymer Chemistry

1815

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

2545

How tripod is used?

1160

Tell me how many significant figures are there in the number 0.0036?

1046

Explain the structure of a dna molecule?

1082

What is iron ore consists of?

1047

How to determine water content of bis tetrazole amine mono ammonium salt

3486

Why is estimation of copper done at 620 nm wave length?

1439

How can I develope method of dissolution by HPLC OR UV

2408

Which type of column should i use to check the purity of high molecular weight protein using HPLC reverse phase column chromatography? Hi everyone. I wanna to check the purity of high molecular weight protein (collagen) with MW of ~130 kDa using a HPLC. I know C18

1915

Practically why we get negative absorption in UV SPECTROPHOTOMETER when the time of cleaning sample analysis. is negative absorption in Uv valid or not?

2404

what is mean by extactable and leachable study?

1172

why we not use caffeine at 205nm for hplc calibration?

3312

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