Chemistry Interview Questions
Questions Answers Views Company eMail

When recording an IR spectrum in the lab, we take no special precautions to account for the presence of oxygen, nitrogen, or argon in the air. What are the consequences of this?

1 1880

about method developement in hplc

1193

What is diffrence between extractable volume and deliverable volume? Answer pls

3873

why should we perform dissolution PVT calibration only by UV spectrometer, not by HPLC ?

1160

Qc interview questions

Apotex,

1226

What is difference between" LOD" AND "VACCUME LOD"

2 3478

why are measure gas flow " ml " in Gas chromatography

1131

How to find peaks in ftir chromatography

Aurobindo,

1032

Difference between standard operating procedure and standard test procedures in pharmaceutical industry

2 6504

How to start the dissolution development for unknown tab?

IPCA,

1112

what is DIPE limit in residual solvent?

1 2256

What is control room temperature and which guide line says?

1132

What is the pH of water?

Zydus Cadila,

1 2839

Why we use buffers Acetate for pH 4.5 & phosphate for 6.8 and not vice-versa?

Zydus Cadila,

1 2478

We use hicrome 10 cxs column in hplc analysis....pls tell me.. what is the meaning of 10 cxs?

1127


Un-Answered Questions { Chemistry }

Explain the molar mass of chlorine?

559


which batch require to use for analytical method validation?

303


What is column in chromatography?

1732


Define dipole-dipole force?

580


An atom has 18 protons and 22 neutrons. Tell me its mass number?

556






why we not use caffeine at 205nm for hplc calibration?

2785


Difference between hlaf and rlaf

1622


if you have given one product then how you determine the impurity in that?

267


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.

1731


What is the accepted microbial load in APIs as per USP.........?

1988


describe the lewis dot structure of Mg2+?

11335


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

979


what happens to the unit particles of a solute when it dissolves on a liquid?

1689


composition of brass

1349


What is electrode potential? : Electrochemistry Corrosion

568