Analytical Chemistry Interview Questions
Questions Answers Views Company eMail

solvents used in NMR

Laurus,

2 4427

what does 'n' stands for in spectroscopy?give the formula.

Laurus,

1085

define beer-lambertslaw.

Laurus,

5 8840




difference between precision & accuracy.

Laurus,

1 8320

formula for %RSD.

Laurus,

4 10296

which chromatographic technique is used for softening hard water?

Laurus,

1 4633

Nitrogen test is used for which chromatography?

Laurus,

1 4948

what are the primary standards of redox titrations?Name any two.

Laurus,

2 6187




In the isomers,enantiomers give the only physical properties present such that no chemical properties present.

Laurus,

965

mode of absorption in alimentary canal?

Sun Pharma,

1140

why we calibrate ph meter and balance daily.....but hplc and uv requires quaterly?

Apotex, UPL,

5 14348

why we are use metthanol variously in kfr?why don't use other solutions?

4 7921

when we use capillary and packed columns in gc

Rakshit Drugs,

4 6032

what is the difference between IR and FTIR instrument analysis

2 8484

how can give the expiry period and restadardisation of volumetric solution

Meenaxy Pharma, SRF,

1282


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Un-Answered Questions { Analytical Chemistry }

for heavy metal test lead used in which form pure form or any other form for preparation of lead standard sol

3557


How do we quantify crystaline and amarpous forms by using (NMR, XRD)spectroscopic techniques? Which any others instruments are useful for this quantification? explain

1135


what is the structure of DOWEX-50

3649


why are measure gas flow " ml " in Gas chromatography

333


Qc interview questions

326






How to start the dissolution development for unknown tab?

288


can we use the same detector in HPLC as well GC and what could be the differences we can find in the final chromato graph in any aspects?

897


What is the difference between spectro meter and spectro photo meter?

8407


some product having water content method with pyridine and ethylene glycol mixture instead of methanol? how they are selecting and methanol is not suitable solvent how ?

1137


What is aggregate and fragments in SEC?

628


In HPLC calibration, caffeine is used as primary standard for wave length calibration due to caffeine is having dual maxima at 273 & 205 nm and one minima at 245 nm. Any body can give reference of these details from any pharmacopeia (with chapter no.) or any other authentic guideline?

292


why lactose has less charges when packed in steel containers when compared with packing of lactose in polyamide material?

942


Why to use propyl paraben in HPLC gradient calibration

450


Why potassium dichromate was using in Uv calibration?

349


explain 5 components of gas chromatography ?

638