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

During Soundness testing of Cement by Lechatelier method the Cement mould expands about 20 mm when merged in curing water for 24 hours after mould preparation.In that Cement MgO content is about 3.0%,SO3 is about 2.6% & Blaine is about 360 M2/Kg.Guess the reason & suggest solution.

3079

As per X-ray Fluorescence theory, when material particle is irradiated with X-ray the electron of innermost orbital of that element atom is exited and emits outside of the atom as photoelecrons, living behind a hole in innermost orbital . This hole is filled by outer orbital electrons. The question is that finely what happens to that photo electon which is emitted outside of the atom?

Grasim,

1 4239

In testing of Cement the formula for water requirement for setting time is as below- Water required for setting time = NC x 0.85 The question is that what is the logic of 0.85 in this formula??

Grasim,

2427

if two miscible liquids are each found to boil at the same temperature, could you safely conclude that they are identical?

2 16102

what is the formula of petrol

4 6707

what is the formula of diesel,petrol & CNG too?

NTPC,

10 37864

what are transitional elements?

1 3854

what are the uses of hydrogen?

1 4089

what is nascent hydrogen?

1 9153

Shall i get the model question papers for junior lecture of Andhra pradesh

Mylan,

2791

what is method development parameter in HPLC method development

GVK,

6 44901

How to calculate LOD & LOQ in HPLC Validation Method

Dr Reddys, GSK GlaxoSmithKline, Reddy Labs, Reliance, UIS,

14 116858

Why forced Digradition Study is done

6 14415

What is reaction takes place when water content analysis is done

2 10781

How are PDA Detector work in HPLC

Agilent,

7 42763

Un-Answered Questions { Chemistry }

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

1016

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

2131

What is the main difference between ODS1 and ODS2 Hplc column.

5219

what is the disso medium for tropsiun chloride

2260

What is glacial acetic acid? What are its uses?

1071

Why we have to add 200mg Na2CO3 in preparation of 0.1N sodium thiosulfate solution?

1577

How to synthesize methylene bisthiocyanate using CH2Cl2 and NaSCN?

3003

how to mesure a relation of assay by HPLC and purity in results?

2326

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 ?

3669

How can chemists control which type of polyethylene (ldpe vs. Hdpe) is generated? : Polymer Chemistry

1734

how to decide for one product require water content or LOD?

782

What are the inorganic material eliminated in Sulphated Ash

3338

What is blank solution?

1088

What are the advantages of potentiometric titration?

1087

mahagenco syllabus for the post of chemist

6476

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