Analytical Chemistry Interview Questions, Answers for Freshers and Experienced asked in various Company Job Interviews

Analytical Chemistry Interview Questions

Questions Answers Views Company eMail

What are the different types of columns used in HPLC

Wockhardt,

3 13275

In HPLC when we use Isocratic method, Gradient method in hplc?

Pharmaceutical,

8 22775

Any molecule is filing for ANDA purpose, what are the dissolution requirements / specifications needed ?

IPCA,

1 6439

What is Endcapped Hplc column

2 9756

Why we more noise in PDA detector compared to UV detector?

Aurobindo,

1 11762

if the purity is 99.9%,is need to do assay?

Reddy Labs,

3 15258

What is the difference between specified impurity and Identified impurity

Glenmark,

3 16394

What is the difference between specified impurity and Identified impurity

Merchant Navy,

1 6166

how do you established the RRF for unknown impurity

Square Pharma,

6 13392

I want analyze my compound at 325 nm so which standard shall i use to calibrate my HPLC system? How i can assure my hplc detector is suitable or not?

AMRI,

3 10290

How we will choose pH of a mobile phase if analyte pKa value is 4

Celon Labs, Laurus,

2 11500

what parameters we will consider while developing a HPLC method and how we confirm our HPLC method is valid?

DRL, Laurus,

3750

Which column is more polar, C8 or C18?

Cipla, Glenmark, Laurus, Torrent Power,

6 30644

what is the difference between heavy metals and sulphated ash

Aurobindo,

2 18242

what is difirence b/w ROI&ROE

Pfizer,

1 9768

Post New Analytical Chemistry Questions

Un-Answered Questions { Analytical Chemistry }

Difference between hlaf and rlaf

2168

why salisylic acid not using now days for disdolution calibration?

842

Why dissolution test is not performed in all of the products

2587

What is viod volume and peak purity in HPLC?

2938

how require to set assay concentration for standard and sample?

977

in api coa contains only process impurities and in product coa contains degradation impurities?

738

iam usig ph buffers merk. manually how to prepare ?

2329

How to calculate coreletion coefficient

1769

What is the difference between Discriminating media and DPDM(Dissolution Profile with Different Media)

7606

If combination product how require to identify which imp is of which api?

868

can i use hplc detector to uplc and why?

2354

In performance Check of GC Why Hexadecane Peak is Considered

3110

In Assy by potentio metry titration method how select MET U ,DET U, SET U,

2247

Qc interview questions

1798

how you confirm the assay method?

830

For More Un-Answered { Analytical Chemistry } Questions Click Here