1. Categories >> Sciences >> Chemistry
  2. Suggest New Category


Chemistry Interview Questions
Questions Answers Views Company eMail

What is the reason for negative peak in HPLC while using UV detector.

 2 14721

What is the reason of RT change in new column v/s old column in HPLC

Apex,

3 16666

What is the difference between kf  and LOD

Enaltec Labs,

5 20572

What is chiral and why this performing in HPLC

Hetero, Macleods,

4 19036

why we not use caffeine at 205nm for hplc calibration?

Alkem Labs,

2800

why we use 254nm for caffeine analysis as it having maxima at different wavelength?

Ahlcon Parenterals, Alkem Labs,

1 4385

whenever kf titration is done that time one result is high and second one lower  results what to do.

Invochem Laboratory, Laurus,

2 4624

What are the inorganic material eliminated in Sulphated Ash

Cipla,

2820

How to Calibrate NMR instrument ?

Reddy Labs,

1 4725

what is difference b/w spectroscopy, Spectrometry and Spectrophotometry ?

Reddy Labs,

1 11211

Hello Dear all; I have a technical question related to analytical Chemistry, I have a sample of (40% w/w) Ferric Chloride solution (for water treatment purposes which consist a little portions of Ferrous Chloride and Hydrochloric acid. I need to know the methods to determine the percentages of each Ferrous Chloride and Chloride acid. Also I want to make sure that this solution is truly (40% w/w). So ANY CLUE !!! Thanks in advance.

 2 3760

What is the meaning of 624 in DB-624 Capillary column used in GC?

Aurobindo,

5 26159

In Agilent HPLC calibration using Empower 3 Software, What is the criteria for GPV Baseline starting point? i.e., Either it can start from -0.00/+0.00 or any range is there like -0.05 to +0.05 or ......etc?

Apotex,

1 6161

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

Reliance,

2930

What is the difference between STANDARDIZATION and CALIBRATION of instrument like KF? why do we standardization of KF everyday? Why the KF factor being only 5.02 etc? 

AlpaMed, Vergo pharma research,

5 28681

Un-Answered Questions { Chemistry }

which gas is used in preaparation of bit salt

1836

How an electrochemical is measured? Define emf of an electrochemical cell? : Electrochemistry Corrosion

580

what is NIR wave length

932

Why a1% value is used for some product ? What is the criteria for selection a1% value ?

1859

what is turbidimetric titration?Give 2 examples.

1979




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

2010

What is similarity factor?

714

What is a tripod?

639

Why is the indicator eriochrome black(ebt) shows wine red color at the beginning and blue color at the end?

921

how many types of balance calibration test?

1710

seminal on pyrimidine

1699

What is the composition of Barford Reagent?

1548

What is the diffrence in japan mkt requirement in analytical method validation over US?

281

What are the factors that affect the viscosity of a liquid?

576

Protactinium-233 can be bred from Thorium-232. Describe the process of breeding Protactinium-233 and its significance for nuclear fuel production.

184

For More Un-Answered { Chemistry } Questions Click Here