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

Analytical Chemistry Interview Questions

Questions Answers Views Company eMail

a bottle of concerntrated HCL (36.5) was labelled as 37% (w/w) and density 1.19m/l.What is hcl molarity?

8 41901

all types of questions asked at the cipla interview

Aurobindo, Calyx, Cipla, Graviti Pharmaceuticals,

4642

In acid base titration, after complet consumption of HCl by NaOH, addition of next drop of NaOH will give pink colour with phenolpthalein indicator. Why this pink colour appear? Why not blue, black, green or anything elese?

3 11390

Why we are using only KBr in IR spectrometer why not KCl

Dr Reddys,

10 35315

why potassium dicromate use in calibration of UV VIIBLE SPECTROCOPY ?

3 8640

how to pepare 6.8 pH phosphate buffer

10 82561

what is pK & pKa value

3 13689

what is range of Vivible UV ? What is UV& Vivible spctroscopy use for ?

6 12593

What r the limitatoins of uv visible spectroscopy ? Why Water use in blank standard for uv visible spectroscopy ?

Cipla, Reddy Labs,

4 41349

What is difference between Primary and secodary reference standard?

2 19545

WHAT IS UNIT OF ABSORBANCE AREA IN HPLC OR UV DETECTER

8 27616

why phenolpthalin gives pink colour when we titrate aganist sodium hydroxcide & phenolpthalin gives colourless titrate aganist hydrochlric acid which is un burate

1 5412

what is mass spectra ? why it is necessary ?

1 5868

difference between IR & NMR spectroscopy ?

9 40905

what v define from IR & NMR spectroscopy ?

Sun Pharma,

2 8263

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Un-Answered Questions { Analytical Chemistry }

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

2693

What if impurity area in control sample coming more as compared to LOQ level of impurity ?

1557

which are the diffrent batches in the pharmaceuticals?

776

How to decide assay range for non pharmacopeial API analysis by HPLC? Could you give me any reference for same e.g Guidelines or Paper publications?

3306

all types of questions asked at the cipla interview

4642

A ha tc is actual defination of retention time?

1562

i want model written test paper for the post of analyst in IOCL(indian oil corporation ltd) any one pls help me

2679

how a particular wavelength can be different for a particular compund while analysing by uv and by HPLC.

2250

Ratio of Water and Acetonitrile(diluent) is not recommended to use in cleaning method validation,why?

2905

How you develop a method in HPLC?

2571

Describe your field experience sample type collected,sample techniques,field measurements taken and equipment used?

2653

is it nessesary to do solution stability for 7 days?

727

from where i get mortar pastle for glass bottle crush? it's required for testing of it?

2236

In HPLC calibration, caffeine is used as primary standard for wave length calibration due to caffeine is having dual maxima at 273 & 205 nm and one minima at 245 nm. Any body can give reference of these details from any pharmacopeia (with chapter no.) or any other authentic guideline?

1920

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

1860

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