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 acid base titration, after complet consumption of HCl by NaOH, addition of next drop of NaOH will give pink colour with phenolpthalein indicator. Why this pink colour appear? Why not blue, black, green or anything elese?

3 11654

Why we are using only KBr in IR spectrometer why not KCl

Dr Reddys,

10 36146

WHAT IS ORGANIC CHEMISTY ? GIVE ME ANSWER AS AN M.SC LEVEL

Zydus Cadila,

9 14536

why potassium dicromate use in calibration of UV VIIBLE SPECTROCOPY ?

3 8935

how to pepare 6.8 pH phosphate buffer

10 83525

what is pK & pKa value

3 14032

what is range of Vivible UV ? What is UV& Vivible spctroscopy use for ?

6 12993

What r the limitatoins of uv visible spectroscopy ? Why Water use in blank standard for uv visible spectroscopy ?

Cipla, Reddy Labs,

4 41650

What is difference between Primary and secodary reference standard?

2 19724

Give the IUPAC name. i) [Co(NH3)5SO4]Cl ii) [Co(NH3)5Cl] SO4 iii) [CoCl.CN.NO2.(NH3)3]

3 44343

Give the formula of the following compound. i) Chloropentaamminecobalt(III) chloride ii) tris(ethylenediamine)cobalt(III)chloride iii) tetraamminesulphatocobalt(III)nitrate

1 6778

Discuss role of coordination chemistry in: (a) Biological system (b) Analytical chemistry (c) Medicinal chemistry

3337

Out of (CH3)3C- and (CH3)2CH- carboanion, which is more stable and why?

2 10699

WHAT IS UNIT OF ABSORBANCE AREA IN HPLC OR UV DETECTER

8 28181

why phenolpthalin gives pink colour when we titrate aganist sodium hydroxcide & phenolpthalin gives colourless titrate aganist hydrochlric acid which is un burate

1 5581

Un-Answered Questions { Chemistry }

what you do when compound having dwel wavelength?

808

Practically why we get negative absorption in UV SPECTROPHOTOMETER when the time of cleaning sample analysis. is negative absorption in Uv valid or not?

2455

in monograph 7 imp are there but in vendor showing 5 imp do not req to include 2 imp for that what will be justification?

786

wtat type quations will be sak in ongc exam?

3352

What is ciprofloxacin hcl?

1106

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

701

why digestion require in icpms?

830

What are the advantages of potentiometric titration?

1158

As a chemist working with Protactinium, what safety measures and precautions would you take due to its radioactivity?

627

What is shaking level in GC?

839

which are the sizes of capsules?

1051

how can I make the copper get white bye any salt or acit?

2270

What is the difference between Assay and Purity?

1608

What is difference between LVT and RVT Viscometer?

7157

What are filters? Why are they used?

1135

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