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 12979

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

Pharmaceutical,

8 22168

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

IPCA,

1 6275

What is Endcapped Hplc column

2 9562

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

Aurobindo,

1 11495

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

Reddy Labs,

3 15036

What is the difference between specified impurity and Identified impurity

Glenmark,

3 16013

What is the difference between specified impurity and Identified impurity

Merchant Navy,

1 5959

how do you established the RRF for unknown impurity

Square Pharma,

6 12875

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 9924

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

Celon Labs, Laurus,

2 11235

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

DRL, Laurus,

3631

Which column is more polar, C8 or C18?

Cipla, Glenmark, Laurus, Torrent Power,

6 30056

what is the difference between heavy metals and sulphated ash

Aurobindo,

2 17946

what is difirence b/w ROI&ROE

Pfizer,

1 9576

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Un-Answered Questions { Analytical Chemistry }

why we use a particular hplc column for a particular compound give reasons?please

2688

Tell me something about Vitamin A test method by HPLC

2632

WHAT IS THE PARAMETER FOR THE SELECTION OF MOBILE PHASE IN HPLC?

1138

if you given one product then which tests you will perform?

665

how to develop the icp ms method? Application of icp ms?

752

before starting analytical method valodation what you checking? and how giving preference to start validation?

753

If we have 5 strength which is not dose proportinate and excipients also diffrent in each strength then how we can proceed for Force degradation? and excipient are same but not dose propotinate the how FD?

764

How will u perform degradation study in detectors other thann PDA in HPLC Methodology

2480

WHAT IS THE USE OF STARTER ?????????

2359

why does used dry caffien in HPLC calibration?

1988

Identify problem faced when mass spectroscopy is used with HPLC system ?

1804

what is mean by covalidation

735

why digestion require in icpms?

731

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

2492

how to calculate elemental impurities?

988

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