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Chemistry Interview Questions
Questions Answers Views Company eMail

Is it necessary to validate both assay and related substances for usp official methods for products.

Apotex,

6 14281

why we use a particular hplc column for a particular compound give reasons?please

Dr Reddys, Indoco Remedies, Natco,

2752

What is the difference between method validation and method verification

Biological.e.limited, Laurus,

1 6301

IS THERE ANY EQUIPMENT TO CHECK AND CALCULATE THE POLARITY OF A LIQUID?

Reddy Labs,

2456

why helium does not react with other elements?

3 7198

what is the difference between lod and loq?

Apotex, Aurobindo,

4 37375

What should be the level/ Percentage of Arsenic in Arsenic free zinc.

FDC, Laurus, Pharmaceutical,

2233

Assuming that the density of the solution is the same as the density of water (density of water=1.000g/ml), calculate the mass of water for both reactions using: mass of water = Volume of water Density of water. Mass of water =

Hetero, ONGC,

2537

What is the exact reason to use THF and IPA in buffers of Reverse phase HPLC as a solvent?

Dr Reddys,

1 5171

why sre you used Potassium hydrogen phthalate in standarisation of 1N NaOH and 0.1 N Perchloric Acid?

Cipla, Elder, Vamsi Labs,

1 9797

How to determine the EDTA content by potentiometry titration in Ceftriaxine sodium

2546

Why only Copper standard is used to calibrate Atomic Absorption spectrophotometer?

CMET,

2728

why are not used methonol in kf titrator to find out water content in ketones?

Piramal Healthcare,

5 15324

Why are EDTA used to etimation of Ca,Mg etc, in Water analysis?

Reddy Labs,

3 10536

why we use kbr as constant in the FTIR ?

4 10938


Un-Answered Questions { Chemistry }

What is the limitation of cod?

1123


identification is for unknown? qualification for known? reporting for LOQ?

725


While performing TOC sst analysis Zero shift disabled & sample analysis zero shift enabled why?

2866


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

1577


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

1020


how to prepare for the exam of ongc please give some idea

21971


What is the accrptance criteria in RSD for RS method precision on basis of impurity percentages?

825


if content uniformity passing but dissolution varrying then what is next step?

877


What is a tripod?

1084


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

1305


What is phase transfer catalyst?

1105


Explain the protein in chemistry?

1060


hi friends, dis is ramana reddy.i have been workining in bulk drugs as QC chemist.i would like 2 change d company.i want sample RESUME,OFFER LETTER,APPOINTMENT LETTER,PAY SLIP.if any body has these documents,pls send 2 my mail id i.e ramanareddy.sdpl@ymail.com

2335


Discuss the historical significance of Actinium and its discovery in the context of the periodic table.

702


Name the two most common end-products of alcoholic fermentation?

1007