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Analytical Chemistry Interview Questions
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in dissolution in one tablets two molecule one is losartan & second is HCTZ losartam is complies in s1 stage & hctz is complies in s2 stage then how to report result losartan s1 stage result or losartan s2 stage result

Dishman,

1 2049

why we use polystyrene film for ftir calibration?

Rakshit Drugs,

4 17173

WHAT IS THE CRITERIA FOR SELECTION OF TIME OF DISSOLUTION AND THE MEDIUM OF DISSOLUTION?

GVK,

2130

why do we adjusted ph in the mobilphase

Cipla, Dr Reddys, Reddy Labs,

9 22262

How to develop the method when we have very low amount of impurity?

2 7355

If we have 120 minutes run time method for HPLC and you wan to decrease the Run time so what should you do??

 6 11895

Wath is the differenc between two column HPLC wich have the samme support , lenth , pore size, etc.. But different name .for exemple : Spherisorb / lichrosorb

NDA,

2 7029

WHAT IS PVT TEST IN DISSOLUTION TEST , WHAT IS PVT SIGNIFICANCE AND HOW IT IS PERFORMED ?

 1 6750



 1804

How you will select column for HPLC development depends on nature of compound and how it will work explain in brief?

 3 9421

What is the role of SO2,I2, Methanolic hydroxide and any base in Karlficher titration

Medley Pharmaceuticals,

2 8171

The boiling point of 1,3 butadiene is -4.4 DC & the boiling point of Pentane is 36.1 DC. Then how come Pentane elute before 1,3 BD in GC analysis?

 1 4654

What is Arsenic Test?

Flamingo Pharmaceuticals,

1996

What is the difference between Optical rotation and Spcefic optical rotation

IPCA, Matrix,

2 12250

why we use sodium salicylate in uv light calibration at TLC chamber

Aurobindo, Lee Pharma,

1 7845

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Un-Answered Questions { Analytical Chemistry }

How to calculation of residual solvent methanol (3000 ppm) standard solution, and how many quantity used of test sample

2515

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

1274

effect of pore size, pore volume, partical size, column length, carbon load on retention time? what is carbon load? what is the use?

313

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

2263

How much is the standard area for glc analysis

1735




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.?

278

calibrtion procedue of LC-MS

2129

How you develop a method in HPLC?

2065

For limit test of heavy metals in BP, Method C require that the substance is ignited at a temperature not exceeding 800 °C. Why confines such the temperature?

3483

why xterra column require to use at higher ph?

423

why cone formation during dissolution?

305

what are risk assement in the analytical qbd?

277

What is dose dumping? why require to do?

283

how require to set assay concentration for standard and sample?

351

CAN WE DETERMINE THE PEAK PURITY IN GAS CHROMATOGRAPHY ANALYSIS?

689

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