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Chemistry Interview Questions
Questions Answers Views Company eMail

how calibrate the hplc detector

Cipla, Shraddha Analytical Services,

2 10848

why we use deturium lamp in uv spctrophotometer other than lamps

1 10124

what is iupc name citric acid

3 6856

water is made of?

4 6372

A new drug substance found fail to meet specification for an unknown Impurity during stability study(Specific change),how would further proceed?

2 7549

In Force degradation Study Compound is not degrade in any condition , also in higher stress what can i do ?

Alembic,

4 10995

4. Describe the operation of the Craig apparatus. Chapter.3 Equilibrium Processes in Separations

2773

2. Two grams of Benzoic acid are dissolved in 200 ml of water and extracted with 200 ml of diethyl ether. The distribution coefficient of benzoic acid is 100, and its dissociation constant is 6.5 10-5. Calculate the distribution ratio (D) of benzoic acid at pH 2, 5, and 6. 3. Calculate D at pH 2 to 10 (1 unit apart) in the above problem, and plot D versus pH.

2267

How to Prepare Dilute Sodium hydroxide solution?

Claris Otsuka,

3 10881

what type of question will ask in the interview of lab chemist.

Godavari Biorefineries, Monginis,

3366

Why we show ammonia vapours to tlc plate?to which compounds?

1 6367

What is the SOP for SOP

JBCPL,

4 10147

Water is made of?

Hetero, Wipro,

1 4985

Why perform dissolution multimedia study in dissolution Development

Cipla, Optimus,

4 21074

what is the purge flow & how to calculate

Granules,

2741


Un-Answered Questions { Chemistry }

How is librated iodine estimated?

1141


1.What is the difference between method validation and method verification 2.Which guidelines proposed to method transfer

1900


Why dissolution test is not performed in all of the products

2588


Why does the experimental lattice enthalpy of NaI differ greatly from the theoretical lattice enthalpy?

3473


USP methodology, EP methodology, IP methodology, among three if possible to use one methodology for qualify working standard to use USP, EP, IP ? Please explain...

2078


which gas is used in preaparation of bit salt

2363


What is a potentiometer titration?

1251


How is brass solution prepared?

1180


Tell me the common name of the molecule dihydrogen dioxide?

1097


how you start RS method development when for new product?

780


Is it nessesary all multimedia dissolution require descriminatory?

865


What is the main difference between ODS1 and ODS2 Hplc column.

5320


What is molality?

1036


Explain how do you separate the colors of ink?

1007


what is mean by dissolution hydrodynamics?

893