Analytical Chemistry Interview Questions
Questions Answers Views Company eMail

why plane of polarized light rotated by opticaly active compunds?

Glenmark,

1 2273

why plane of polarized light rotated by opticaly active compunds?

Glenmark,

1 5677

Can any one tell what is RECALL OF PROCEDURES is

Macleods,

1 1563




what is the difference between capillary and glass column in GC

1 5845

differance between L1 and L7 columns

Everest,

5 16823

what is basc principle of the HPLC,IR,UV AND GC? what is difference between diffusion spectra and transmision spectra in IR?

Torrent Pharma, GICC, Mylan, Sygene, Dr Reddys, Zydus Cadila, Cadila,

1 18383

plz tall me that any pharmacopeia and guideline is par meted to use 1.68,4.01,7.00,9.00,12.45 buffer for ph meter calibration

Torrent Pharma,

1 1785

In pharmaceuticals formulation OOS applicable in Raw Material(which is not manufacturing in the company. and purchase by approved vendor)).Why?

Orchid,

1 6099




why we use only six bowls for dissolution of a drug

Cipla, Natco, TelePerformance,

1 16032

On which pharmacopoeia basis we can calibrate instruments like HPLC,GC,UV,DISSO,IR etc...

Laurus, Cipla, Micro Labs,

9 16905

why PH range 0-14 explain

Saint Gobain, DRL, Reddy Labs, Viva,

5 54514

How to make up 100ml of a solution cintaining compound A at 95µg/ml and compound B at30µg/ml for an HPLC reference standard.

3 4406

why we prefer kbr for ftir than kcl?

Aurobindo,

5 9460

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

Vimta Labs, Graviti Pharmaceuticals,

1229

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

1404


Post New Analytical Chemistry Questions






Un-Answered Questions { Analytical Chemistry }

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 ?

1228


how can give the expiry period and restadardisation of volumetric solution

1367




1123


What is viod volume and peak purity in HPLC?

1473


Describe your field experience sample type collected,sample techniques,field measurements taken and equipment used?

1529






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

2601


why we are using hexane in calibration of number of drop per mL

303


How to choose the which salt is suitable for mobilephase

1765


What is the main difference between ODS1 and ODS2 Hplc column.

2146


How much is the standard area for glc analysis

1016


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

1229


In HPLC (Waters) software Empower1,2 &3 what is the updation for each version

1506


Why acetonitrile and water are used as extraction solvent when analysis melamine? I thought they are miscible and won't be able to separate...

367


acceptance criteria for lod & loq by standard deviation of response and slope??

1259


mahagenco syllabus for the post of chemist

4977