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 11352

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

Dr Reddys,

10 35265

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

Zydus Cadila,

9 13931

why potassium dicromate use in calibration of UV VIIBLE SPECTROCOPY ?

3 8620

how to pepare 6.8 pH phosphate buffer

10 82484

what is pK & pKa value

3 13667

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

6 12555

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

Cipla, Reddy Labs,

4 41291

What is difference between Primary and secodary reference standard?

2 19525

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

3 43993

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

1 6563

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

3253

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

2 10434

WHAT IS UNIT OF ABSORBANCE AREA IN HPLC OR UV DETECTER

8 27569

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

1 5389

Un-Answered Questions { Chemistry }

What should be the level/ Percentage of Arsenic in Arsenic free zinc.

2179

How to find peaks in ftir chromatography

1612

In testing of Cement the formula for water requirement for setting time is as below- Water required for setting time = NC x 0.85 The question is that what is the logic of 0.85 in this formula??

2375

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

2433

What is edta?

1012

how much mass should be there in volumetric flask while in preparation of sample for assay?

2512

in which situation ion pair require to use?

744

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?

4003

WHY pKa value is more important than pH value of the mobile phase in HPLC?

1712

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

691

What is blank solution?

1039

How to compare XRD graphs against standard and carry polymorpism study of API's by powder XRD method?

3818

FDA MHRA

2555

Why do you require laboratory temperature for viscosity determination?

1092

Ph meter can show more than 14 ph reading? Why ph range in between 1 to 14 only?

687

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