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

what is use of acetonitrile compare to methanol in RP-HPLC Method devlopment

Neuland, Orchid,

7 24255

how do you make a amine sugar

Al-Manhal, Reddy Labs,

2327

is a bonded water molecule in an organic material can be easlisy and accuractly determined by KF rather than LOD

2 7656

How to know HPLC column performance?

Meghmani Organics,

4 13187

What is heavy water

Meghmani Organics,

3 8833

What will be the effect on HPLC analysis result if three mobile phases given separately through three valves and same proportion mixed together and given by one valve?

LOIL,

1 5187

Which products will produce when acetic anhydride reacts with Ter-butanol, Sec-butanol, Iso butanol, Dimethylamine etc.

2836

Why PH range from 0to14.

College School Exams Tests, Reddy Labs, Wings Customer Care,

2 14255

what are the different by which a new molecule can be characterised ?

Cipla, Reddy Labs,

2 6269

give an example of secondary standard (solution).

1 5308

why you are using benzoic acid for water content determination in TEA

2 7813

difference between instrumenent and equipment

6 13974

mixed 1.0 ml of methanol and 1.0 ml of toluene and injected in gas chromatography.will you prove that both solvents are in the ratio 1:1(not by area normalization)

1 3696

What is the principle of GC/HPLC ?

BioCan, Biocon, Megafine Pharma,

4 57367

pH range of methanol and acetic acid is ........

1 6386

Un-Answered Questions { Chemistry }

What is the unit of conductance?

1010

Is benzene aromatic?

1135

What is a repartition coefficient?

2397

How tripod is used?

1093

FDA MHRA

2562

What is weak acid?

914

How much is the standard area for glc analysis

2217

Why sodium hydroxide used for maintain pH of phosphate buffer

2340

What is the role of stannous chloride?

1337

How are the waters classified based on the degree of hardness?

1091

why we use glass fiber filters use in some situation?

749

what is lod and loq ?,why use k2cr2o7 , kcl h2so4 in uv calibration ?,why use benzophenone & caffene acetone in hplc calibration ?,what is leading peak in hplc ?why we do the calibration of limit of stry light in hplc & uv ?

3626

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

9746

Why ph scale range is 14? Why it is not less or not greater than 14?

1157

explain sour gas?

1004

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