Analytical Chemistry Interview Questions, Answers for Freshers and Experienced asked in various Company Job Interviews

Analytical Chemistry Interview Questions

Questions Answers Views Company eMail

for heavy metal test lead used in which form pure form or any other form for preparation of lead standard sol

Watson Pharmaceuticals,

1 6076

we run the same sample in same method in different flow rates in HPLC,any changes in sample analysis?

2 7536

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?

4085

For titration in anhydrous media with perchloric acide, if lack of titrator, Which indicator is been used for replacement. How calculate pH of test solution to choose suitable indicator?

2320

if the flow rate is increases then any changes in retention time in hplc

1 8049

Whatn is HPLC

HPLC, Jubilant, Orchid,

1 7493

what is the limit of Correlation for IR test compare to the standard and test

Nakoda Chemicals,

3 10384

IS THERE ANYWHERE MENTION THAT THE RE PROCESS BATCH REQUIRE TO KEPT STABILITY STYDY

Nakoda Chemicals,

2 6614

why holmium perchloate solution in Uv calibration

Alembic,

2 10721

why do we have to used saturated ammonia in TLC

Cipla, IPCL, Mylan,

3 11771

stability study is going on up to 3years for famotidine-USP but the pharmacopeia is revised and tlc test is replaced with hplc test. At the 4th year frequency the product is failed in hplc test .how can i assain the expiry or retest date and can i stop or continue the programme?

Nakoda Chemicals,

2 6632

how to correct peak when peak comes broader in shape? How to do calibration of HPLC?

Mankind,

2 8378

HOW TO CALIBRATE HPLC OVEN

Mylan,

1 6742

What is importance of pH in the Heavy metal test and How it effect on the test results?

2289

which light is used in FT-IR spectroscopy

Hetero,

6 18563

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Un-Answered Questions { Analytical Chemistry }

How do we fix the sample concentaryion in hplc method development?

1149

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

3871

what is %labelled amount in content uniformity of dosage unit and its calculation?

5246

why we use glass fiber filters use in some situation?

806

in OSD forms require to use gas chromatography?

843

What is similarity factor and its use in api strength?

1306

What is related substance by HPLC impurity limits as per USP?

1112

why octanol used to determine the partition coefficient ?

2461

How to calibration of the uv spectroscopy and its test?

1203

what is different when impergnated silica plates are used in separation of azo dyes using column chromatography?

2034

what is the acceptance criteria for enteric coated tablets in 0.1n hcl validation in each parameter?

901

We use Potassium Dichromate solution for the calibration of UV-Visible Spectrophotometer in UV region. My question is to calibrate visible region which solution could be used in photometric accuracy

1912

In IR spectra, generally a molecule vibrates without apply emr or ir light?

1986

how to calibrate hplc & gc

4517

how you determine moist.of NaOH sol or NaOH flacks

2228

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