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Chemistry Interview Questions
Questions Answers Views Company eMail

How we develop a method by HPLC for unknown compound,if we got three peaks with same response then how we can find out which one is our desired compound's peak without taking help of LC MS.

Apotex, Kemwell,

4 13376

In case of dissolution test, if there is variation within 6 individual units however the batch is complying as per S1 criteria, is it necessary to do investigation for the same? What should be the criteria for such variation?

 2 4370

What is the difference between bulk property detectors and Solute property detectors vivimed labs limited

 3 15470

IF THE COMPOUND PKA IS 5.3 WHY WE ARE ADJUSTING PH+/-2 OF THE COMPOUNDS PKA. WHAT IS THE CONDITION

Dr Reddys, Reddy Labs,

2 9411

What are the limits for uniformity dosage content for tablets and capsules

Micro Labs,

5 21119

WHAT IS THE USAGE OF REFRACTIVE INDEX IN PHARME FIELD

 3 8615

IN DISSOLUTION TEST S1AND S2 AND S3 CONDITIONS ALL ARE FAILED THEN WHAT IS THE DESSICION U CAN TAKE

Cipla,

12 24941

Why potassium hydrogen pthalate is used for perchloric acid And naoh. Why it is used for both acid and base

Vijayasri Chemicals,

6 29017

what are the normalisation, internal standard and external standerd methods in HPLC.

GVK,

2 13516

what is the experiment to find out the diffrence between energies of various conformal of cyclohexane?

 1 3287

is ther any guidline is available for limt of peak fronting.and what is the limt of peak fronting.

 2 10951

how can you define the PH

Dr Reddys, Matrix, Piramal Healthcare, Reddy Labs, Sun Pharma,

17 18097

how would you determine the acceptance criteria for cleaning validationof product A for product B?

Cipla, Cypher Solutions, Torrent Power,

1 6839

what is inorganic chemistry?

Indian Navy, SoftSol,

4 6223

How can we konw that the HPLC column is endcapped? Is it possible to identify visually without COA?

JBCPL,

2 9353

Un-Answered Questions { Chemistry }

what is silicon chip

1608

How to caluclate %w/v& %w/w ple give examples solids&liquids 10%NAOH W/W 10%W/V- 20%HCL W/W &W/V

2060

WHY pKa value is more important than pH value of the mobile phase in HPLC?

1251

why is mgcl used in edta titration

1102

why require the ph, buffer during hplc mobile phase?

401




Why only 1.2 million lux hours require in photostability study?

456

Can you provide an overview of the properties and characteristics of Protactinium and its placement in the periodic table?

138

Which are the diffrent grades of api in pharma?

309

What is aggregate and fragments in SEC?

1579

on saturation solubility study data how we can find out the bcs class of drug?

356

How is the measurement of ph made?

589

chlorination of methane is possible and a mixture of products are obtained. Is flourination and Bromination of methane is possible?

1610

Write the structural formula for edta.

624

What is the function of diethyl amine?

629

why do antimony and bismuth have the same electron affinities?

1939

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