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

what is the diffrence between absorbance and absorption in the beer,s lamber formula ?

2 11202

one gram of which below elements has the most atoms in its? a) H b) D C)T D) He

4 7312

0.1 atom gram of the unknown element( X)reacts with 2.4 gram of O2 to produce the oxid product . can you tell us, what is the oxid formula ? a) XO b)X2O3 c)XO2 D) X2O4

Ajanta,

1 4116

what is meant if aluminium sulfate contains 30% basicity?

2165

why PH scale range is 14? why it is not less or not greater than 14? solution of HCl or hydrogen containing liquid has a PH. but if the solution is KMnO4 here not hydrogen power does it PH? explain plz....

4 25276

why in atomic mass electron is not include while proton and neutron include? although electron is a part of atom.

2 5798

To make phosphorus tetraoxide from phosphorus why pure oxygen isn't taken and why mixture of oxygen and nitrogen is taken?

2553

Why we use Uracil for HPLC calibration in Detector wave ength accuracy test?

5 26399

k.f principle in finding out moisture content

1 13376

why we are carrying standardization of karl fisher auto titrator with water and disodium tartarate.

1 5594

What is difference btw UV detector & RID detector

4 19323

What's the importance of these procedures?

1 5073

How precise should be the linearity in HPLC method validation?

Glenmark,

3 11815

what should be the precision during technology transfer?

Glenmark,

3 9371

why we use vanillin in melting range calibration

3 14789

Un-Answered Questions { Chemistry }

Protactinium has a relatively short half-life for some of its isotopes. How does this characteristic impact its practical uses and research?

576

Differentiate electroplating and electro less plating? : Electrochemistry Corrosion

1073

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

1906

How we performed the force degradation for drug substance, is any specific guideline is available for each parameter(Acidic, basic, oxidation,heat)? what conditions you mentained for above parameters.

2309

Besides the extent of branching, can you think of any other structural parameters that might lead to differences in physical properties? : Polymer Chemistry

1304

sir, what does happen ............? naphthal+benzene(or)toluee........> ?

2173

what is stero electronic factor.2 what is steric control factor and what is product control factor

2131

What is the difference between purge septum flow and column flow in gas chromatography?

2583

function of detecter in hplc ,gc and spectroscopy? function of carrier gas in gc?

2669

in api coa contains only process impurities and in product coa contains degradation impurities?

701

Sr-90, a radioactive isotope, is a major product of an atomic bomb explosion. It has a half life of 28.1 year. Calculate the first order rate constant for this nuclear decay and the fraction of 90Sr that remains after 10 half lives?

6249

If change in specification which parameter require to do for validation? if change in chromtographic condition then which parameter? if api change then which parameter? if change composition then which parameter? if old method not work out then whicj parameter? if additional one impurity added then which parameter of validation require to do on above each conditions? elaborate separately

856

Explain the use of glacial acetic acid?

1103

Did anybody have method for acetyl cysteine effervescnce tablet

2252

what are the role of chemical education in sustainable development

2204

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