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 pH Range has been fixed as 0 to 14 ?

Akums, Cipla, Matrix, SUN,

1 7387

How you develop a method in HPLC?

CU, Perrigo, Wockhardt,

2571

what can saybolt viscometer do?

1 8303

why using buffers in hplc inteed of water

5 14237

How long we can use hygroscopic reference standard in terms of water absorb.I mean in line with respective monograph's specification or more than that?

1 3068

Why we use methy Ethyl Propylparabine For HPLC Calibration

1 5449

What is use of LOD and LOQ in validtion and give range and in calculation why we use 3.3* LOD here why we use 3.3

Dr Reddys, IPCA, Reddy Labs,

2 6708

In specificity what parametrs are consider why that parametrs

2 6871

ash or residue in that what will be there.

3 6540

How can we determine Moisture content of HI?

Cipla, Reddy Labs,

1 3351

What is difference between oos

Gennex,

7 27939

what is the differance between Analytical and semi micro balance?

2 13703

In the method validation proceedure,lod & loq calculation we use the formulae for LOD=3.3*SD/slope and for LOQ=10*SD/slope,why we use 3.3 & 10 in the formulae?

1 10927

In HPLC Chromatographic separation Resolution equation is Rs = 1.18 (tR2 –tR1)/wh1+Wh2, Where, tR2 and tR1 is run time of eluent ratios of the distances from the point of application to the centers of the spots and the distance travelled by the solvent front from the point of application (retardation factor), and Wh1and Wh2 , is peak width of at half height. What is 1.18 ?

1 7183

what is mean by theoritical plates(not formula) ?

Micro Labs,

4 14640

Un-Answered Questions { Chemistry }

What is third generation HPLC Columns?

1941

what is definition of validation? which components are followed give detail?

2298

Actinium-227 can decay into Thorium-227. Explain the significance of this decay chain and its applications, particularly in nuclear physics.

615

why should we perform dissolution PVT calibration only by UV spectrometer, not by HPLC ?

1649

if you have given a blank water how you analyse by general analytical techniques?

1979

WHAT IS THE SYLLABUS OO GROUP -I?

2245

WHICH STANDARD WE USE IN SILICA ANALYSIS IN SILICA-GEL METHOD FOR SOLID SAMPLE

2079

Explain Thiele's structure for benzene. What is the difference between thiele's structure and modern structure (resonance hybrid) of benzene?

5145

why using HCLO4 in potentiometry?. what are the chacterestics of HCLO4.

3636

What is the composition of Barford Reagent?

2067

Describe the role of Protactinium in neutron sources and its significance for research in nuclear physics.

512

How will you calculate how many moles of glucose present in 320 ml of 5.0 m of glucose solution?

1046

What is si unit of viscosity-coefficient?

1064

What are the advantages of conductometric titration over visual or potentiometric titration?

1074

Qc interview questions

1696

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