Analytical Chemistry Interview Questions
Questions Answers Views Company eMail

why sre you used Potassium hydrogen phthalate in standarisation of 1N NaOH and 0.1 N Perchloric Acid?

Cipla, Elder, Vamsi Labs,

1 9195

How to determine the EDTA content by potentiometry titration in Ceftriaxine sodium

2143

Why only Copper standard is used to calibrate Atomic Absorption spectrophotometer?

CMET,

2285

why are not used methonol in kf titrator to find out water content in ketones?

Piramal Healthcare,

5 13873

Why are EDTA used to etimation of Ca,Mg etc, in Water analysis?

Reddy Labs,

3 9490

why we use kbr as constant in the FTIR ?

4 9656

how much wave length of Soduim vapour lamp used in polarimeter

Reddy Labs, Torrent Pharma,

2 10015

what is the principle involved in turbidometry and nephelometry ?

Graviti Pharmaceuticals,

3770

What is basic difference between method validation,process validation

Atul,

1 8800

why sucrose used in polarimeter calibration?

Reddy Labs, Sugar Factory,

2 11200

why we are using 6 dosage units in dissolution, and why we are using 6 tablets in disintegation test.is there any scientific reason beyond 6?

ABC, Alembic, IPCA,

1 21106

IN DISSOLUTION WE ARE USING A LETTER 'Q' WHAT IS MENT BY Q

Reddy Labs, Torrent Pharma,

5 13255

define polar and non polar solvent

2 12428

Why we use 100 RPM in friability test

IPCA,

1 7370

In HPLC Calibration, On which basis RSD Limit of noise test is fixed (NMT 33.0 % )

Alembic,

3111


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Un-Answered Questions { Analytical Chemistry }

How can the GC or HPLC method is selected to determine the impurity profile in drug product?

7102


why require the ph, buffer during hplc mobile phase?

523


we can use expired sample for validation and analyst qualification?

455


What is viod volume and peak purity in HPLC?

2522


what is difference between UV - VISIBLE MODEL NO like 1600,1601,1700 etc ? plz explain me

2373






How can I develope method of dissolution by HPLC OR UV

2037


Related substance method equivalency on control sample or spiked sample?

430


how pda detector works over uv?

405


what is different when impergnated silica plates are used in separation of azo dyes using column chromatography?

1641


calibrtion procedue of LC-MS

2310


What is the Formula for coreletion coefficient in plhplc calibration

1406


Why sometime potassium ortho phosphate mix with acetone use for sample preparation for hplc

1111


Why a1% value is used for some product ? What is the criteria for selection a1% value ?

2018


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

2255


How would you decide dissolution medium for NCE compound of class I drug

1856