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Chemistry Interview Questions
Questions Answers Views Company eMail

Why pH Range has been fixed as 0 to 14 ?

Akums, Cipla, Matrix, SUN,

1 6495

How you develop a method in HPLC?

CU, Perrigo, Wockhardt,

2073

what can saybolt viscometer do?

 1 7630

why using buffers in hplc inteed of water

 5 12180

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 2436

Why we use methy Ethyl Propylparabine For HPLC Calibration

 1 4755

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 5544

In specificity what parametrs are consider why that parametrs

 2 5794

ash or residue in that what will be there.

 3 5219

How can we determine Moisture content of HI?

Cipla, Reddy Labs,

1 2645

What is difference between oos

Gennex,

7 25849

what is the differance between Analytical and semi micro balance?

 2 12551

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 10075

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 6240

what is mean by theoritical plates(not formula) ?

Micro Labs,

4 13061

Un-Answered Questions { Chemistry }

Explain how can you tell if there is a dipole moment or not?

561

why octanol used to determine the partition coefficient ?

1912

naphtha and hexane mixture can be used a fuel or not

1958

Explain the term aliquot and diluent?

832

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?

1237




How to set analyticl specification for combination products?

295

How tripod is used?

620

What is the nature of the bonding interaction between a metal and an olefin? : Polymer Chemistry

554

what are the guidelines for analytical method validations?

587

Tell me about analytical method validation in QC

5531

Qc interview questions

1245

hi i am siva icompleted m,sc in organic chemistry in 2008&working as alecturer can u send me the interview qusetions with answers . i expected that i got 135 - 140 marks is there any chance to get selection my interview is on may 7th 2010

1645

In IR spectra, generally a molecule vibrates without apply emr or ir light?

1428

which are the diffrent batches in the pharmaceuticals?

336

What are the inorganic material eliminated in Sulphated Ash

2823

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