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

While performing TOC sst analysis Zero shift disabled & sample analysis zero shift enabled why?

2906

which one is better separation in high pressure liquide chromatogram orlowpressure chromato gram in hplc

Hetero,

2222

In which cases factor of KF Reaget got higher side

2 6685

Why sucrose used in calibration of polarimeter

Lupin,

1 4608

what is the concept for adjustment of pH in HPLC buffer solution ? a. Common ion effect b. Counter ion effect and explain me, how we adapt this principles & what is the role of these principles in our method

Apex, Pentagon Labs,

1 3577

What is the difference between BD

1 3331

why water content test performed

1 6281

What is peak purity and response factor in chromatographic analysis? Why we required to find out response factor?

2 7499

What are modes of quantification in related substances

Hospira,

2217

what is the source of ir spectroscopy

CTX Life Sciences, Mylan,

2 7636

Difference Between End Cap HPLC Column and Non End Cap Column

2 14858

What precaution u take when doing rs preparing

DRL,

2183

Which type of column should i use to check the purity of high molecular weight protein using HPLC reverse phase column chromatography? Hi everyone. I wanna to check the purity of high molecular weight protein (collagen) with MW of ~130 kDa using a HPLC. I know C18

Petronas, Shanghai Ocean University,

1975

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

2318

which gas is called laughing gas?

2 4975

Un-Answered Questions { Chemistry }

Explain how can you tell if there is a dipole moment or not?

1090

Name the branch of chemistry that deals with the relationship between electricity and chemical reactions?

1252

Mention the different types of conductivities.

1315

write short note on stero electronic factor, steric control factor and product control factor

2114

Define alum?

1150

Why is ammonia added? Why is that same amount of ammonia added?

1046

What is a tripod?

1134

Explain the secondary structure of proteins?

1040

please explain about aluminium hydroxide assay

1190

If change in specification which parameter require to do for validation? if change in chromtographic condition then which parameter? if api change then which parameter? if change composition then which parameter? if old method not work out then whicj parameter? if additional one impurity added then which parameter of validation require to do on above each conditions? elaborate separately

912

what is mean by ambient temperature?

985

Define hydra?

1116

which gas is used in preaparation of bit salt

2363

calibrtion procedue of LC-MS

2765

What is rs test why we are performing rs test?

1915

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