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 11361

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

Dr Reddys,

10 35279

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

Zydus Cadila,

9 13941

why potassium dicromate use in calibration of UV VIIBLE SPECTROCOPY ?

3 8626

how to pepare 6.8 pH phosphate buffer

10 82494

what is pK & pKa value

3 13672

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

6 12568

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

Cipla, Reddy Labs,

4 41298

What is difference between Primary and secodary reference standard?

2 19532

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

3 43998

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

1 6567

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

3254

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

2 10437

WHAT IS UNIT OF ABSORBANCE AREA IN HPLC OR UV DETECTER

8 27580

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

1 5391

Un-Answered Questions { Chemistry }

why holium oxide prepared in 10% HCLO4 SOLUTION

1407

Define ph?

1077

why in uv calibration in Limt of absorbance parameter specific absorbance is calculated only for selected wavelength

2652

UV and PDA detector, which have less signal to noise ratio?

1084

Does ethylene polymerize under mild conditions in the absence of a catalyst? : Polymer Chemistry

1190

Define dipole-dipole force?

1114

However ozone is heavier than oxygen still ozone is up there in sky why?

1013

For limit test of heavy metals in BP, Method C require that the substance is ignited at a temperature not exceeding 800 °C. Why confines such the temperature?

4006

Explain how can you tell if there is a dipole moment or not?

990

what is the significance of control of absorbance in UV?

2203

What is dose dumping? why require to do?

874

what is the origin to prepare standard operating procedure

2250

Do all explosions produce carbon dioxide or carbon monoxide?

1056

what is classification of elemental impurities? what is risk assement in elemental impurities?

709

what is different when impergnated silica plates are used in separation of azo dyes using column chromatography?

1976

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