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

How to prepare Paracetmol?

1 6271

Why do we use 500ppb sucrose and 500ppb 1,4 benzoquinone in TOC calibration?

1 4796

In the test for control of absorbance in UV calibration why do we use only potassium dichromate and what is purpose of taking a specified amount of 57.0-63.0mg?

Aurobindo, Cipla, FDC,

8 58923

In the test for control of absorbance in UV calibration why do we use only potassium dichromate and what is purpose of taking a specified amount of 57.0-63.0mg?

Reddy Labs,

1 10037

Why do we use 500ppb sucrose and 500ppb 1,4 benzoquinone in TOC calibration?

6 30604

what is the use of performing tapped density in pharmaceutical industry

1 11010

WHICH PRESSURE IS HIGH EITHER INJECTOR OR DETECTOR IN GAS CHROMATOGRAPHY

Avon Organics, Dr Reddys, Reddy Labs,

4 11050

What is the procedure for UV-spectrophotometer calibration?

6 62699

What should be the calibration procedure for wavelength accuracy in case of HPLC?

4 15873

How to decide assay range for non pharmacopeial API analysis by HPLC? Could you give me any reference for same e.g Guidelines or Paper publications?

NCL,

3361

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

NCL,

3866

FDA MHRA

2600

what is normal phase,reverse phase.

3 8441

How can we Qualify a unknown impurity by HPLC

3 13254

How can be set a responds factor for evaluating a unknown impurity by HPLC

Orchid,

2409

Un-Answered Questions { Chemistry }

Sr-90, a radioactive isotope, is a major product of an atomic bomb explosion. It has a half life of 28.1 year. Calculate the first order rate constant for this nuclear decay and the fraction of 90Sr that remains after 10 half lives?

6249

Sir, please give me previous year question paper for RRB for the post CHEMICAL AND METALLOGICAL ASSISTANT.

2722

Why irmoisture balance is used for corrugated box moisture testing

2404

What is the acceptance criteria for moisture balance when calibrated with sodium sulfate

2042

Discuss the historical significance of Actinium and its discovery in the context of the periodic table.

702

How will u perform degradation study in detectors other thann PDA in HPLC Methodology

2549

WHAT IS THE SYLLABUS OO GROUP -I?

2339

why we should take dst factor for below 1%moisture samples

2666

What is the role of a catalyst? : Polymer Chemistry

1019

what is the syllabus for mahagenco recruitment drive for the post of chemist

3276

What is buffer?

1120

what is the relation between Total organic carbon and Chemical Oxygen demand?

2922

In what ways can Actinium be used in conjunction with other elements or compounds to create new materials or compounds with specific properties?

637

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

3866

graphaite has higher melting point than fularine

2998

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