Analytical Chemistry Interview Questions
Questions Answers Views Company eMail

IN pH CALIBRATION,CALIBRATION IS DONE FOR pH METER OR ELECTRODE?HOW WILL YOU JUDGE THAT THE METER TO BE CALIBRATED WITH 4,7,9.2 BUFFERS?EXPLAIN TEMPERATURE EFFECTS ON pH.

Aurobindo,

1 8284

AT WHAT CONDITIONS WILL YOU ANALYSE A SAMPLE,WHICH ARE PRESERVED AT OTHER THAN THE AMBIENT CONDITIONS?(ie COLD STORAGE SAMPLES BELOW 20* CENTIGRADE?

848

What is a base line?

2 8003




what is differance between density and specificgravaty

Neuland,

2 8245

what is defferance between dipolemoment and polarity

Neuland,

1 5634

In standard weight box used for calibration of analytical balance there are two numbers (Qty) of 20mg, 200mg,2.oGM weights. Why?

Orchid,

2 10746

WHAT IS USE OF ION PAIR REAGENTS?

3 6340

How to calculate signal to noise ratio by this formula 2H/h where h from where and how to measure

2 6175




How to choose the which salt is suitable for mobilephase

Ranbaxy, Cipla,

1674

What is quality controle.

6 7234

What is Standard deviation

Cipla,

2 8319

When you get Moisture content by KF higher than by LOD, what does this indicate?

6 10410

what is deference b/w the working standard and reference standard

4 17120

How do we fix the sample concentaryion in hplc method development. what is the basis?Thanks in advance

Orchid, Glenmark, DRL,

3 12531

Suppose we prepared pH buffer solution in lab.and calibrate against NIST solution, and same shall going to used upto 30 days. is it possible to stable pH and apperance ? suggest ?

Orchid,

1 3965


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Un-Answered Questions { Analytical Chemistry }

Principle of single pan analytical balance

3657


What are usp limits for theoritical plats,resoution,tailing factor,peak to valley ratio

303


How to choose the which salt is suitable for mobilephase

1674


What is the calibration of uv process and preparation

697


In dissolution of tablets/capsules elaborate the Dissolution limit 20.0% to 60% Q in 30 minutes.

728






pharma industries oriented

838


How to do regeneration of Metacarb Pb plus column?

1263


How can we calculate offset value pH measurment

208


why we are using benzene, anyline in acetic anhdride assay titration method?

821


what is partion and column chromatography

1034


using gradient pressure in gas chromatography are not ?using gradient pressure why

2119


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

191


could negative ions be produced by bombardment process in mass spectrometry?

194


How much is the standard area for glc analysis

935


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

958