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

in hplc calibration we are using 0.05% acetone why we are using that one and what happen when its conc increases or decreases

Aurobindo, Cadila, Martin,

4 32113

loss on drying we applied vaccum for some compounds and some compounds are at 105c why

3 12490

why we are calibrating autopolarimeter with quartz control plates

1 5841

what is the different in Total ash, sulphated ash, acid insoluble ash, alcoholic or non alcoholic ash?

GHI, Siemens,

10000

why we use TLC?

8 22132

why disodium tartarate is used for autotitrator calibration

Cipla, Micro Labs,

2 13425

perchloric acid&glacal acetic acid both are acids but reaction is complete in volumetric titrations.how?

1 11284

what is the cleaning validation?

BioPlus,

1 9667

acetic acid is weak acid & perchloric acid is strong acid.but how perchloric acid is soluble in acetic acid

AVT, Hetero,

3 11917

sir, what does happen ............? naphthal+benzene(or)toluee........> ?

2175

if tis below reaction does happaen means...,what is the end product.......? naphthal + toluene(or)benzene............> ?

Hetero,

1 5113

What is polymorphism?which type of compounds exhibits polymorphism?

Torrent Pharma,

2 9665

what is the basic principle of conductivity meter

Hetero,

4 29553

Column selection in HPLC method development?

1 13176

which of the following is the best conductor of electricity?

4 6188

Un-Answered Questions { Chemistry }

Why there is no bond with 100% ionic character...??

1819

In HPLC Calibration, On which basis RSD Limit of noise test is fixed (NMT 33.0 % )

3486

Many times I don't got a caffeine peak in calibration of hplc using guard column ❓

1819

Barc in chemistry

1354

what is the purge flow & how to calculate

2648

Why ph scale range is 14? Why it is not less or not greater than 14?

1210

why salisylic acid not using now days for disdolution calibration?

772

what is diffrence between specificity and selecivity?

779

An atom has 18 protons and 22 neutrons. Tell me its mass number?

994

How you develop a method in HPLC?

2616

How to determine the EDTA content by potentiometry titration in Ceftriaxine sodium

2546

why using HCLO4 in potentiometry?. what are the chacterestics of HCLO4.

3694

why we use glass fiber filters use in some situation?

800

what are the role of chemistry education in sustainable development

2590

we shall use Dichloromethane in last stage of API.

3088

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