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

WAHT IS THE ELUTION ORDER IN GAS CHROMATOGRAPHY?

Micro Labs,

3 14751

what is the defferance between the potency and working standard

Arbro Pharmaceuticals, Caplin Point, ECOlogics, Matrix, Orchid, Venus Remedies,

1 6076

what is the principle involved in determination of moisture content?

3 10932

what is difference between assay&purity&potency?

5 33726

why we do the calibration of limit of stry light in hplc & uv

Cipla,

1 4244

what is leading peak in hplc

Cipla,

1 12689

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

what is difference between drug products and drug substance?

DRL,

5 92448

From peak purity spectrum, where or at which point peak purity angle & purity threshold is checked?

Cipla, MSN Pharma,

1 4522

why we are adding sulpuric acid in residue on ignition

Aurobindo,

2 9221

how you determine moist.of NaOH sol or NaOH flacks

2222

what is concentration of oxygen in U.H.P. grade N2 cylinder

1 5115

water is more polar than acetonitrile.but in reverse phase chromatography peaks elute earlier when we increse Acetonitrile.what is the reason.

Matrix,

10 52722

I got 88.0 % assay for a drug in HPLC analysis for same injection i got 40.0% related substances is it possible? what is the relation between results of assay and purity?

5 11925

how to mesure a relation of assay by HPLC and purity in results?

2326

Un-Answered Questions { Chemistry }

Give the IUPAC name for [Co(NH3)5Cl] SO4

1094

hi, i want last 10 years ongc exam recruitment papers for subject in chemistry ,genaralknowladge.

2803

Explain the properties of carbohydrates?

1034

how you fix the limits of impurities?

837

what is stero electronic factor.2 what is steric control factor and what is product control factor

2131

What can you contribute to the company?

2641

How does Actinium contribute to our understanding of nuclear structure and properties, and what experiments or studies have been conducted to explore this aspect?

628

write short note on steroids,terpenes,prostagladins,and phospholipids.

6393

process of Diclofenac sodium,IP.

2211

Why ph scale range is 14?

1105

Atactic polypropylene is always produced with the [cp2zr(r)]+ catalyst. Explain this on the basis of molecular-level interactions. : Polymer Chemistry

1091

Why is the color of the indicator drop remains the same at the end point?

1229

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

1906

can you email me because I have a report and I need you to answer these questions if you would like to if not I completely under stand.

2129

What is determining factor in the oxidation reduction reaction?

1434

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