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Chemistry Interview Questions
Questions Answers Views Company eMail

Why sodium hydroxide used for maintain pH of phosphate buffer

Medicamen Biotech,

1816

What is the deference between Residual solvents and OVI

RA Chem Pharma,

1 3268

What is the diference between residual solvents and organic volatile matter

RA Chem Pharma,

1469

WHY given much noise PDA dector then VWD Dector

 1489

why we shrink our body during cold

IPCA,

1318

How to decide the standard concentration for related substances hplc method

 1 3554

Why we have to use KBr pellet technology ?

 1 2554

Why dissolution test performed on six jar?

Mylan,

1 3431

How to determine retention time in Chromatography

Mylan,

2 5029

effect of Ph during analytical run ?

Lambda Therapeutic Research,

1 2333

USP methodology, EP methodology, IP methodology, among three if possible to use one methodology for qualify working standard to use USP, EP, IP ? Please explain...

Srini Pharmaceuticals,

1543

Can we consider in purity angel

Alkem Labs,

1319

can we Consider the Purity threshold and Purity angle in place of peak purity for the specificity test for method verification

Alkem Labs,

1305

is it necessary to do HPLC calibration at wavelength 315nm if we are doing analysis at this wavelangth

Aarti Drugs,

1648

I need organic mixture analysis viva questions & answers

Practical Viva Questions,

5743

Un-Answered Questions { Chemistry }

Protactinium is a rare and highly radioactive element. How is its radioactivity utilized in various scientific and industrial applications?

123

if you get peak in blank then what require to do?

473

why salisylic acid not using now days for disdolution calibration?

290

in monograph 7 imp are there but in vendor showing 5 imp do not req to include 2 imp for that what will be justification?

254

Explain how many moles of hcl are present in .70 l of a .33 m hcl solution?

585




What is protein - according to chemistry?

674

How can be set a responds factor for evaluating a unknown impurity by HPLC

1916

Give the principle of potentiometer titration.

554

Which are the diffrent grades of api in pharma?

300

Define an electro chemical cell. Give one example? : Electrochemistry Corrosion

575

how the compound separate in coulunm,explain

1933

Why is the indicator eriochrome black(ebt) shows wine red color at the beginning and blue color at the end?

921

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

1741

hi friends, dis is ramana reddy.i have been workining in bulk drugs as QC chemist.i would like 2 change d company.but our company didn't give d OFFER LETTER,APPOINTMENT LETTER,PAY SLIP.if any body has these documents along with sample RESUME,pls send 2 my mail id i.e ramanareddy.sdpl@ymail.com

2444

As per ICH related substances stability trend limit from initial to shelf life

2652

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