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Chemistry Interview Questions
Questions Answers Views Company eMail

What is difference between known and unknown impurities

Sun Pharma,

1 2524

What is the difference between Assay and Purity?

1535

What is the difference between known and unknown impurities?

1 3168

why we are using hexane in calibration of number of drop per mL

1737

Why we have to add 200mg Na2CO3 in preparation of 0.1N sodium thiosulfate solution?

1577

Why to use propyl paraben in HPLC gradient calibration

Glenmark,

7482

Why potassium dichromate was using in Uv calibration?

1 3751

%lod always grater than %water content for same product??

1 2633

We use Potassium Dichromate solution for the calibration of UV-Visible Spectrophotometer in UV region. My question is to calibrate visible region which solution could be used in photometric accuracy

1906

How to define samples weight in moisture content

1 2525

what is acid and base

1 2203

what is NIR wave length

1433

What is AV value in test uniformity content ,describe calculation

Lupin,

1 3275

Why perchloric acid used for potentiometric titration

2683

What is differences between the Instrument and Equipment

Aurobindo,

2 3886


Un-Answered Questions { Chemistry }

Normally entropy is expressed as q/T. But, work and heat have same unit. Why can't it be replaced by work?

2258


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

2636


can i use hplc detector to uplc and why?

2291


What is the easiest, (Less compound mixtures, basically), way to make coca.. ;)

2326


Why is ammonia added? Why is that same amount of ammonia added?

991


Explain the function of mitochondria?

1069


what is the purge flow & how to calculate

2648


why require to add enzymes in capsules dissolution only? is it require to tablet also?

679


WHY given much noise PDA dector then VWD Dector

2100


when we talk about change in entropy we consider total entropy means of surround +entropy of system but when we talk about change in Gibss free energy we consider entropy of system.explain with reason.

2041


what is %labelled amount in content uniformity of dosage unit and its calculation?

5234


what is the importance of peak purity in HPLC and how we can calculate through manul(not software)?

4488


wtat type quations will be sak in ongc exam?

3260


How to compare XRD graphs against standard and carry polymorpism study of API's by powder XRD method?

3864


why we are using hexane in calibration of number of drop per mL

1737