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Chemistry Interview Questions
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Dear sir, This is R.Kadambavadani working in a pharma industry. while doing RS analysis of ibuprofen API, unknown peak eluting some times in the 0.6 Min RT. Kindly send me what is the exact reason behind that. also am using ACN the mobile phase.

 1 1830

What is difference between chemical Assay and Hplc assay?

Lee Pharma,

2 4082

Near infrared Principle

 1 1928

please explian me about area normalisation method,diluted standard method,impurity vs impurity and which one has to be selected in method development

Pfizer,

1102

What is the difference between volumetric solutions and test solutions

Hetero,

2582

How they found 1mL of K.F reagent is equivalent to 5mg of water and if we change the composition of K.F reagent, is it can neutralize more amount of water?

 1307

How can we calculate offset value pH measurment

Dr Reddys,

1072

What is stray light in uv what are units for stray light

Dr Reddys,

1026

Colorimtry

Dr Reddys,

1176

What are usp limits for theoritical plats,resoution,tailing factor,peak to valley ratio

Dr Reddys,

1343

What are usp limits for total impurities,unknown impurity

Dr Reddys,

1 2940

what is allowable limit Of stray light for a spectrophotometer laboratory instruments ?

 990

I want to ask the inventions of the maxwell boltzmann theory of gases?

 1068

Find out how to make artifacts the maxwell boltzmann theory of gases.

 1 1357

Find out how to make artifacts the maxwell boltzmann theory of gases . ps. I don't speak English that well

 1003

Un-Answered Questions { Chemistry }

How are atoms of the isotopes different from one another? Two isotopes of carbon are carbon-12 and carbon-14.

550

Which wavelengths are visible to human eye?

711

What is photoelectric colorimeter?

635

How will u perform degradation study in detectors other thann PDA in HPLC Methodology

2020

sop of a uv visible spectrophotometer double beam elico model

5357




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

1656

The rate constant for the second order reaction is 0.54/M.s at 300oC. How long (in sec) would it take for the concentration of NO2 to decrease from 0.62M to 0.28 M? 2NO2(g) 2 NO(g) + O2(g)

2166

all types of questions asked at the cipla interview

4137

why we shrink our body during cold

1331

how decide the clining method and cleaning method validation require for this perticular products?

303

which cationic polymer is compatible with poly aluminium chloride?

2104

Give an example of a polysaccharide?

649

In what ways can Protactinium isotopes be used to study fundamental particle interactions and properties?

144

WHAT IS THE CRITERIA FOR SELECTION OF TIME OF DISSOLUTION AND THE MEDIUM OF DISSOLUTION?

2143

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

553

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