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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 7818

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

1482

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

CMET,

1639

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

Piramal Healthcare,

5 11094

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

Reddy Labs,

3 7731

why we use kbr as constant in the FTIR ?

4 7727

how much wave length of Soduim vapour lamp used in polarimeter

Reddy Labs, Torrent Pharma,

2 8568

what is the principle involved in turbidometry and nephelometry ?

Graviti Pharmaceuticals,

3148

What is basic difference between method validation,process validation

Atul,

1 7744

why sucrose used in polarimeter calibration?

Reddy Labs, Sugar Factory,

2 9746

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 19144

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

Reddy Labs, Torrent Pharma,

5 11047

define polar and non polar solvent

2 10803

Why we use 100 RPM in friability test

IPCA,

1 5714

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

Alembic,

2445


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Un-Answered Questions { Analytical Chemistry }

how to calculate corelation coefficient in G.C Calibration? what is the calculation part?

1393


why we are using benzene, anyline in acetic anhdride assay titration method?

1202


about method developement in hplc

838


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

1707


i want model written test paper for the post of analyst in IOCL(indian oil corporation ltd) any one pls help me

1795






What are the primary considerations in extractables and Leachables ?

1395


mahagenco syllabus for the post of chemist

5291


Why to use propyl paraben in HPLC gradient calibration

3268


2. Two grams of Benzoic acid are dissolved in 200 ml of water and extracted with 200 ml of diethyl ether. The distribution coefficient of benzoic acid is 100, and its dissociation constant is 6.5 10-5. Calculate the distribution ratio (D) of benzoic acid at pH 2, 5, and 6. 3. Calculate D at pH 2 to 10 (1 unit apart) in the above problem, and plot D versus pH.

1295


Why six unit used for precision?

284


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 ?

1584


What should be the level/ Percentage of Arsenic in Arsenic free zinc.

1397


In IR spectra, generally a molecule vibrates without apply emr or ir light?

988


If we do accuracy at same concentration at which linearity planned,what is the need to do linearity separately?

1354


How can I develope method of dissolution by HPLC OR UV

1466