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

How to prepare ppm solution of Nacl form its salt?

5 69419

is urea addition affecting the COD (chemical oxygen demand) & BOD (Biological oxygen demand)level? why?

3 11737

what is mean by assay?

6 22040

why we are doing seal wash and needle wash?

3 16429

which functional group we can detect in IR?

3 12599

what is mean by UOD?

2 11687

what is mean by content uniformity?

5 11175

today i am doing calibration of HPLC. when i inject the blank it was going on -ve.(bleow then zero) why?

3 10885

what are the sources in ELSD,PDA, RI and UV Detectors?

1 8310

process is feo,fe2o3 and fe3o4

1 5075

in karl fischer reagent which solvent is used for dissolving iodine sulphur dioxide and imidazole

Strides,

4 11671

what is a differance between assay by HPLC and assay by titration?

5 31423

what is PH of 0.1N Hcl, 0.01N Hcl & Mehanol.

3 48482

what is batch no. of prednisole tablet.

Dr Reddys,

8 17538

HOW RRF IS CALCULATED IN HPLC

2 12783

Un-Answered Questions { Chemistry }

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

1046

Protactinium-234 is an important tool for studying ocean circulation. How is it utilized in oceanographic research?

666

How BIS Decedied the LSF value 0.66-1.02 with calculation.

2247

Explain how do you separate the colors of ink?

1009

Actinium is a radioactive element. How is its radioactivity utilized in various practical applications or fields?

695

Protactinium-231 emits alpha particles. How can this property be utilized in radiation detectors or other scientific instruments?

682

using gradient pressure in gas chromatography are not ?using gradient pressure why

3442

What is weak acid?

1020

what is the purge flow & how to calculate

2741

how a particular wavelength can be different for a particular compund while analysing by uv and by HPLC.

2369

What is equivalent conductivity?

1290

What is the difference between volumetric solutions and test solutions

3268

for inorganic molecules require to do RS, Assay and disso?

786

Why to use propyl paraben in HPLC gradient calibration

7600

how you establish the LOQ?

852

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