Analytical Chemistry Interview Questions
Questions Answers Views Company eMail

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,

897

why we use polystyrene film for ftir calibration?

Rakshit Drugs,

4 11188

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

GVK,

1355




why do we adjusted ph in the mobilphase

Cipla, Reddy Labs, Dr Reddys,

9 16218

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

2 5477

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

6 8437

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 5088

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

1 4996






1027

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

3 6729

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

Medley Pharmaceuticals,

2 5946

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 3089

What is Arsenic Test?

Flamingo Pharmaceuticals,

1176

What is the difference between Optical rotation and Spcefic optical rotation

IPCA, Matrix,

2 8335

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

Lee Pharma, Aurobindo,

1 4854


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Un-Answered Questions { Analytical Chemistry }

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?

1234


What are the primary considerations in extractables and Leachables ?

991


WHICH STANDARD WE USE IN SILICA ANALYSIS IN SILICA-GEL METHOD FOR SOLID SAMPLE

845


What is third generation HPLC Columns?

689


what is partion and column chromatography

1025






WHAT IS DIFFERENCE B/W MALTINGRANG/DSC

1140


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

1491


In Dissolution Test why limit is define Q+5% what is the role of +5%.

1419




1027


What is diffrence between extractable volume and deliverable volume? Answer pls

737


What is the principle of Thermal conductivity detector and FID?

1400


what is impurity profile. how to interpret this impurity profile to a drug product or drug substance.

1027


what is %labelled amount in content uniformity of dosage unit and its calculation?

3558


what is the different in Total ash, sulphated ash, acid insoluble ash, alcoholic or non alcoholic ash?

6938


calibrtion procedue of LC-MS

1246