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Chemistry Interview Questions
Questions Answers Views Company eMail

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

1769

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

1820

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?

1908

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

2172

in sampling of raw material which side is pasted sampled labels

1839

why holium oxide prepared in 10% HCLO4 SOLUTION

1462

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

1918

What is the importance of rrf in rs by HPLC?

1 3227

Barc in chemistry

1355

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

Flipkart, Wipro,

1083

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

Flipkart, Wipro,

1016

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

Godrej,

1140

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

1408

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

1 1499

Explain the ANS Isotope?

1 1583


Un-Answered Questions { Chemistry }

graphaite has higher melting point than fularine

2998


how to set sample and standard concentration in RS method?

904


Protactinium-233 is used in the thorium fuel cycle. Explain how this cycle operates and its potential benefits in nuclear energy production.

679


What is the composition of Barford Reagent?

2129


Principle of single pan analytical balance

5143


What is the use of tlc and hplc? And when and where use?

1165


if you have given one product then how you determine the impurity in that?

744


analytical method validation require to with respect to release specification or shelf life specification?

793


What are the primary considerations in extractables and Leachables ?

2277


whether ter weight is require when doing the water standerdisation

2005


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

1016


What is the calibration of uv process and preparation

1998


What is the difference between cracking, pyrolysis, destructive distillation, hydroforming, carbonization and dry distillation?

9806


why Nacl solution called as brine solution?

3795


How is measurement of ph made?

1056