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Chemistry Interview Questions
Questions Answers Views Company eMail

in the CuSO4.5H20 ,NO. OF Cu attach with water molecules?

IIT,

1 4491

what are UV rays absorbs slightly?

 1639

what is the process for separating the components of gunpowder?

 2 17202

however ozone is havier than oxygen still ozone is up there in sky why?

 1 3264

Why is Francium(Fr) so difficult to react with water?

 1735

functional groups present in the darvon compound

 2 12789

why we are taking 85 ml of concentrated HCl to prepare 1N Solution

SG Phyto Pharma,

4 116109

Which is more basic?Ethylamine or Acetamide?Why?

 7 42525

Which is more basic among pyridiene and piperidene

 7 18625

what is the difference between base & nucleophile?

4 5907

what is the valence of nitrogen?

GACL, TCS,

10 12705

who is the king of chemistry?

 7 18979

What is diffrence between residue on ignition and sulphated ash?

Aurobindo, Cadila, Dr Reddys, Mylan, Panas Pharmaceuticals, Piramal Healthcare, Remidex, Zydus Cadila,

37 192142

how can standardized of HCl of 0.1 N

 7 46439

What is the difference b/w OVI Solvents and Residual Solvents in case of Gas Chromatogaphy and What is its Detection Limit?

Jubilant Organosys, Suven Life Sciences,

8 36307

Un-Answered Questions { Chemistry }

What is the purpose of adding urea?

882

What is the limitation of cod?

609

How would you decide dissolution medium for NCE compound of class I drug

1704

How are pka and strength of a weak acid related?

591

Give the IUPAC name for [Co(NH3)5Cl] SO4

599




State beer’s law.

569

Identify problem faced when mass spectroscopy is used with HPLC system ?

1379

What are the methods used to control the corrosion? : Electrochemistry Corrosion

560

Explain what are the hydrocarbons?

597

how we can identify the impurity is coming below loq at transfering site?

382

What is hybridyzation? How can we find that which type hybridyzation in perticular compound like in CH4(hy is sp3)?

685

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?

2976

which gas is used in preaparation of bit salt

1842

In what ways can Protactinium isotopes be used to study fundamental particle interactions and properties?

140

Define alum?

654

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