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

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 2666

What is difference between chemical Assay and Hplc assay?

Lee Pharma,

2 5405

Near infrared Principle

1 2812

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

Pfizer,

1693

What is the difference between volumetric solutions and test solutions

Hetero,

3266

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?

1838

How can we calculate offset value pH measurment

Dr Reddys,

1559

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

Dr Reddys,

1726

Colorimtry

Dr Reddys,

1708

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

Dr Reddys,

1969

What are usp limits for total impurities,unknown impurity

Dr Reddys,

1 3757

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

1573

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

1739

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

1 2271

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

1659

Un-Answered Questions { Chemistry }

What is the reaction that occurring between fas and potassium dichromate?

1348

why we should take dst factor for below 1%moisture samples

2718

Why we use DPPH in ESR and DPH in fluorescence spectroscopy?

2650

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

737

HI, I AM SUNIL BISHNOI.I AM PREPARING FOR ISHRO ASTRONOTES EXAM.PLEASE TELL ME ALL ABOUT THIS.

2532

What are the challenges and opportunities associated with handling and storing Protactinium due to its radioactivity and scarcity?

696

In pickling process of titatium with HCL . how to know if the acid is not effective after pickling several batch. is there any test to know it. (not practically)

1725

Give an example of a polysaccharide?

1238

what is the disso medium for tropsiun chloride

2315

what is silicon chip

2153

Differentiate electroplating and electro less plating? : Electrochemistry Corrosion

1128

The reaction of an acid with an alcohol to form an ester and water. What is the process?

1079

how will you do the prep for unstable componds?

2071

Can you provide an overview of the properties and characteristics of Protactinium and its placement in the periodic table?

701

What is the formula to determine the concentration of M of a solution given the % transmittance? Use %T = 43.7 as an example.

2763

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