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Chemistry Interview Questions
Questions Answers Views Company eMail

hi i am m.sc organic chem and complete analytical lab tech dipolma now job in qc many time ask question you in m.sc organic why job in qc please help me i can not give proper ans please tell me

Arch Pharmalabs, Natco,

3 9747

why use benzophenone & caffene acetone in hplc calibration

 1 16589

why use k2cr2o7 , kcl h2so4 in uv calibration

DRL, GVK,

1 9803

what is lod and loq

 3 10139

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 ?

Wockhardt,

3174

what is the difference between contract research organisation and api&bulk industry

 1 2180

is gvk or aurobindo best? which one is best. i have heard gvk not good for freshers is it right?

 2 5466

what is the difference between hot air oven and vacuum oven? why you are using vacuum for some products

Alkem Labs, Cipla,

6 33375

What is the b/W dead volume and dwell volume ?

 2 13404

why r u using hplc grade solvents

4 11349

Why do we use sodium salicylate for Calibration TLC Cabinet U.V Lamps

Matrix, Spar Labs,

3 22530

How do you show that equal quanitities of two isomers provide the same response using a PDA

 1 5312

what is GLP? Which industries it requried?

Aurobindo, AXIS Clinicals, GVK,

1 11608

How can we separate Urea & semicarbazide in single HPLC method ?

 2 6214

What is the calibration procedure for Malvern MS2000 particle size analyzer and acceptance criteria?

Reddy Labs,

2 4987

Un-Answered Questions { Chemistry }

Explain why acetic has less conductivity than hcl?

581

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

550

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

1825

Write the equation of photosynthesis?

581

Which type of column should i use to check the purity of high molecular weight protein using HPLC reverse phase column chromatography? Hi everyone. I wanna to check the purity of high molecular weight protein (collagen) with MW of ~130 kDa using a HPLC. I know C18

1454




how can karl fischer's titration be used to estimate alcohols??????

2198

Why we are use glass viscometer, and what is calculation manual calculation formula as per USP. How many types of viscometre in glass type viscometer.

1862

Protactinium-233 is used in the thorium fuel cycle. Explain how this cycle operates and its potential benefits in nuclear energy production.

173

how to calculate elemental impurities?

534

acceptance criteria for lod & loq by standard deviation of response and slope??

2082

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

1124

if identification threshold crosses the limits then what next step?

325

How to synthesize methylene bisthiocyanate using CH2Cl2 and NaSCN?

2432

How to do regeneration of Metacarb Pb plus column?

2073

in dissolution why pool sample needed? in which type of drug pool sample need?

2586

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