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

Why dissolution test apparatus calibration with salycilic acid tablets was stopped by FDA&USP from the year of 2009?

Aurobindo,

1 9207

What is UV cut off?

Sanmar,

1 3859

What is the importance of sulphated ash test?

1 5034

What is impurities in pharma analysis?

1 2644

What are the different zones in stability according to ICH?

Apotex,

1 2974

According to ICH,India is coming under which climatic zones?

Cipla,

1 3362

How does GC did work?

1 2642

Which detector is used in uv-vis spectrophotometer?

Glenmark,

1 9981

Why chromic acid wash is not recommended by USP for glassware cleaning?

Lupin,

1 2675

What is the difference between ROI & sulphates ash?

1 3515

What is difference between NDA & ANDA ?

Alembic,

1 4414

What is Rf value& Rx value in TLC?

Abbott,

1 9841

What are the six USP melting point reference standards?

1 2996

What is the size of capillary tube used for analysing melting point?

Apotex,

1 2903

What is the difference between drug product and drug substance?

Apotex,

1 3128

Un-Answered Questions { Chemistry }

What are the types of insulators?

1030

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?

3540

WHY given much noise PDA dector then VWD Dector

2100

how require to fix the linearity and accuracy cincentration range?

1669

i want model written test paper for the post of analyst in IOCL(indian oil corporation ltd) any one pls help me

2734

What is the principle involved in conductometric titration?

1169

What is the application of hardness date in environmental engineering practice?

1408

Why a1% value is used for some product ? What is the criteria for selection a1% value ?

2346

What is the chemical formula of alum?

1154

What is meant by transmittance?

1081

What is the role of mercuric sulphate?

1077

How many millilitre is equal to 1 litre and how many microliter is equal to litre?

1098

WHAT IS THE CRITERIA FOR SELECTION OF TIME OF DISSOLUTION AND THE MEDIUM OF DISSOLUTION?

2577

The use of vermilion on rubric of the Tartar Relation is confirmed by the presence of three lines attributed to HgS. Why should this diatomic have more than one vibrational line?

2660

why salisylic acid not using now days for disdolution calibration?

772

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