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

In HPLC what is Single point threshold, peak purity index and minimum peak purity index? what should be consider for pure peak.

3 32352

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

2484

What is the brigg's raucher reaction?

2337

why the sucrose used in calibration of polarimeter

Neuland,

5 16546

what r the parts calibrated in gc

ELBS, Reddy Labs,

21 38572

acceptance criteria for ph meter, hplc detector,pump,injector,oven when we calibrate.

3 24894

is there any material other than caffene to calibrate hplc detector

Biocon,

13 30008

What is the difference between Chromatograhic Purity And Related substances

Cipla,

11 68131

who is our p.m.

ONGC,

2 5447

what is the difference between M.C and LOD

Aurobindo, Cipla, Laurus, Matrix, Synthokem Labs,

21 72813

what is the lamp used in SOR?

Aurobindo,

18 34971

What is the difference between Capillary column and Packed column.

Cipla, Hetero, Sun Pharma, Supreme Petrochem,

7 69648

whai is primary standard?

10 20608

why evolution select ATPin many places like metabolism and other places rather then GTP, TTP etc. and why GTP selected in activation of G-alfa in G protein signalling ??????

2244

what is the value of pH

Reddy Labs,

11 24292

Un-Answered Questions { Chemistry }

I have compare C2H2-air and C2H2-N2O flame AAS on determination calcium. Both use same range of std to plot calibration curve. (2-6ppm) When i measure the sample with phosphate, KCl and LaCl, C2H2-N2O flame give false positive result, around 0.5ppm. When i measure the sample with phosphste, KCl and EDTA. C2H2-N2O flame also give 0.5ppm false positive. But both above mentioned sample would not give false positive when measured by C2H2-air flame. What is the reason?

3540

AT WHAT CONDITIONS WILL YOU ANALYSE A SAMPLE,WHICH ARE PRESERVED AT OTHER THAN THE AMBIENT CONDITIONS?(ie COLD STORAGE SAMPLES BELOW 20* CENTIGRADE?

2054

why holium oxide prepared in 10% HCLO4 SOLUTION

1462

What is the bluish white precipitate formed after adding ammonia solution?

1099

Describe the process of Actinium extraction from its primary sources and how it's obtained for various applications.

650

How is the measurement of ph made?

1068

how to calculate elemental impurities?

1033

composition of german silver

2336

Why we use potassium dichromate in control of absorbance in uv region and copper sulphate in control of absorbance in visible region?

2982

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

1578

What is the difference between cracking, pyrolysis, destructive distillation, hydroforming, carbonization and dry distillation?

9806

in which situation require to take incident in validation?

1727

If combination product how require to identify which imp is of which api?

839

Explain what is the net charge of a non-ionized atom?

1048

which are the sizes of capsules?

966

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