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

Through assay by hplc(anhydrous basis) product got 100.8% .How much the potency of that product.Moisture content is 1.7%,Sulfated ash is 0.02%,Total impurities are 0.3%

2 6366

Why pyrene is also use for calibration if detector

Cipla, Dr Reddys,

1 4749

what is difference in ods I ods II is this is realy from sorbent / packing characteristics or from other means

Sandoz,

1972

In gas chromatographic analysis sometimes we use headspace, why it is required instead of manually injection?

1 4788

why nitrile are least reactive of carboxylic acid derivative

1 3308

How to fix the sample concentration in related substances development.

Novartis, Watson Pharmaceuticals,

3 16844

Who discovered X-ray

Huntsman Corporation,

2 5147

which gas fill the cfl and light bulbs?

3 4211

How to calculate the signal to noise ratio.

Rakshit Drugs,

1 7518

why methonol used for kf titrations

Glenmark,

1 3420

Why pH range is 1-14 nt more than 14???

IPCA, Lincoln Pharmaceuticals,

3 9118

Weight balance variation limit during analysis

Amneal Pharmaceuticals,

7 10424

what are the differences between assay procedures and estimation in chemical analysis? also what is the equivalent factor that we consider in assay analytical procedures?

Karnataka College of Pharmacy,

2677

What is the principle of gas chromatography ?

Admiron Life Sciences, Bicon, MOL,

2 4931

How to calculate lamp energy in hplc?

1 3991

Un-Answered Questions { Chemistry }

Tell me about analytical method validation in QC

6181

in which situation ion pair require to use?

821

Explain the molar mass of chlorine?

1034

how much mass should be there in volumetric flask while in preparation of sample for assay?

2580

what are the differences between assay procedures and estimation in chemical analysis? also what is the equivalent factor that we consider in assay analytical procedures?

2677

What is the difference between purge septum flow and column flow in gas chromatography?

2586

How to choose the which salt is suitable for mobilephase

3250

how require to set assay concentration for standard and sample?

922

Cholesterol is a compound suspected of causing hardening of the arteries. The formula of cholesterol is C27H46O. a. A sample of cholesterol is isolated from the arterial lining of a 60-year-old American male. What is the formula of this compound? b. Cholesterol is extracted from a chicken’s egg. What is the formula of this compound?

3178

Explain what is the net charge of a non-ionized atom?

1049

How is the measurement of ph made?

1068

how will you do the prep for unstable componds?

2028

As a chemist working with Protactinium, what safety measures and precautions would you take due to its radioactivity?

574

What are the applications of electrochemical cell? : Electrochemistry Corrosion

1169

what are the guidelines for analytical method validations?

1102

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