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

Retention time & Relative Retention time Definition & between difference? How to Calculate response factor(RF) & relative response factor(RRF)?

MSN Pharma, Titan,

3 20597

why are using toluene in uv calibraion in resolution performance

MSN Pharma,

2 11095

why we make titiration of Iron with EDTA ?

Cipla, Sitec Labs,

1 9080

why antharacene use hplc calibration

ITC Infotech,

1 3874

hardness of distilled water

CAPL, Parabolic,

1 5945

What is difference b/w IR&NIR

Apotex,

1 5796

Why does boiler drum ph maintain from 9.5 to 10.2

1 7812

What is the definition of water content or moisture content,what is the procedure going on w.c amalysis?

Cipla, KIYI,

1 11040

how can you determine a compound acidic or basic?

Celon Labs, Cipla,

2 10751

For LOD and LOQ determination which method is accurate? (slopemethod or s/n ratio method)

Reddy Labs,

4 11608

how to develop the shorter run time for pharmacopeial methods having 100 min run time?

Reddy Labs,

3 11137

How you start the method development of unknown compound.

1 5903

How to determine water content of bis tetrazole amine mono ammonium salt

3486

Is there any difference in principal of reverse phase and normal phase chromatography? and why? Please update. Thank and regard

MSN Pharma,

3 11346

Why Nitric acid can be stored in Aluminium containers?

1 6733

Un-Answered Questions { Chemistry }

What is the principle involved in conductometric titration?

1169

what is the importance of peak purity in HPLC and how we can calculate through manul(not software)?

4488

What is equivalent conductivity?

1222

Why we use DPPH in ESR and DPH in fluorescence spectroscopy?

2585

What are the primary considerations in extractables and Leachables ?

2276

how we can identify the impurity is coming below loq at transfering site?

872

How do we fix the sample concentaryion in hplc method development. What is the basis?

1209

Tell me the common name of the molecule dihydrogen dioxide?

1036

What is chemical oxygen demand?

1058

How we performed the force degradation for drug substance, is any specific guideline is available for each parameter(Acidic, basic, oxidation,heat)? what conditions you mentained for above parameters.

2309

How are ph and pka related?

1107

How is the measurement of ph made?

1068

In Dissolution Test why limit is define Q+5% what is the role of +5%.

3103

why we are using hexane in calibration of number of drop per mL

1737

Explain the properties of carbohydrates?

1033

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