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

General Chemistry (478)
Chemistry AllOther (190)

Chemistry Interview Questions

Questions Answers Views Company eMail

WHY pKa value is more important than pH value of the mobile phase in HPLC?

1814

Many times I don't got a caffeine peak in calibration of hplc using guard column ❓

1882

For standardization of volumetric solutions, acceptance limit for concentration is considered as 10% of nominal concentration and %RSD as NMT 0.2% (for appropriate no. of replicates). But , if %RSD has not met, what should be further action?

1970

In Assy by potentio metry titration method how select MET U ,DET U, SET U,

2248

in sampling of raw material which side is pasted sampled labels

1889

why holium oxide prepared in 10% HCLO4 SOLUTION

1500

Why 162 mg NaOH used for 1N volumetric solution in 150 ml water then 54.5 ml diluted with 1000 ml

1986

What is the importance of rrf in rs by HPLC?

1 3301

Barc in chemistry

1400

Arrange by acidic values : phenol, nitrotolouene and o-cresol?

Flipkart, Wipro,

1150

What is the resulting solution when benzene and toluene are mixed ?

Flipkart, Wipro,

1087

Which Formula Forms A Link Between The Thermodynamics And Electro Chemistry?

Godrej,

1187

Why use only methanol,used determinationof moisture content not use other solvents

1459

Why does a freely suspended magnetic needle always point North and South ?

1 1576

Explain the ANS Isotope?

1 1672

Un-Answered Questions { Chemistry }

What is split ratio in Gc? Splitless? how requirr to select?

945

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

2474

Explain how buffer works?

1164

What is the difference between Assay and Purity?

1608

What are the primary considerations in extractables and Leachables ?

2321

which batch require to use for analytical method validation?

863

what is lod and loq ?,why use k2cr2o7 , kcl h2so4 in uv calibration ?,why use benzophenone & caffene acetone in hplc calibration ?,what is leading peak in hplc ?why we do the calibration of limit of stry light in hplc & uv ?

3733

Why is acetone used for cleaning viscometer?

1436

What are common snowflake shapes?

2545

As a chemist working with Actinium, what safety precautions and protocols would you follow due to its radioactive nature?

733

what is the syllabus for mahagenco recruitment drive for the post of chemist

3330

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

2116

why xterra column require to use at higher ph?

974

What is the role of stannous chloride?

1426

calibrtion procedue of LC-MS

2765

For More Un-Answered { Chemistry } Questions Click Here