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 chromatograpbic purity 90% is there, in assay 70% is there. How will you prove remaining 30%.

Dr Reddys,

3 8494

about analytical chemistry

Apotex,

1968

formula of petrol?

Biocon, Reliance,

2 5582

What is differences between normality and molarity.in which cases both are used?

GVK,

1 7525

in gas chromatography what is the difference between gas flow rate and average linear velocity ?

USV,

2565

what are the ideal conditions for coloumn storage

Claris Lifesciences, Srikem Laboratories,

3 7238

i want to know about headspace and interview question on headspace

Srikem Laboratories,

1 5476

For water content determination, if the material is insoluble in methnaol and ethylene glycol mono methyl ether, what other diluent can we use.

1969

class of solvent regarding Residual solvent e.g. Acetone his class

1 4099

What is unit of mass defect?

MSC,

1 3062

What is reagent?

BSC, Hygro Chemicals,

4 6066

why we multiply 1000 in the determination of kf factor ?

Stellence Pharm Science,

3 8576

why we measure PH of a solution in PH only why not POH ?

Stellence Pharm Science,

1 4942

What Is the mechanism of pyridine and methanol .what products produce

Alkem Labs,

1 3785

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

3064

Un-Answered Questions { Chemistry }

What is a proteic unit?

2661

WHAT IS THE USE OF STARTER ?????????

2379

why in uv calibration in Limt of absorbance parameter specific absorbance is calculated only for selected wavelength

2675

In HPLC calibration, caffeine is used as primary standard for wave length calibration due to caffeine is having dual maxima at 273 & 205 nm and one minima at 245 nm. Any body can give reference of these details from any pharmacopeia (with chapter no.) or any other authentic guideline?

1943

Head-to-tail polymerization of propylene is observed with the [cp2zr(r)]+ catalyst. Explain this result on the basis of molecular-level interactions. : Polymer Chemistry

992

What is acid anhydride of h2co3?

979

What is the limitation of cod?

1078

in DMF having extra impurities and in api COA also having extra imp than USP or BP product then how require to proceed?

794

Hi sir if any product monograph not given known impurities (may be 5 impurities) specifications then how we require to proceed for inhouse formulation?

676

function of detecter in hplc ,gc and spectroscopy? function of carrier gas in gc?

2625

Explain the process of obtaining Protactinium from its primary sources and its purification methods.

621

How can we confirm the HPLC column is end-capped or not? Is it possible to identify by physical appearance?

3178

Why we have to add 200mg Na2CO3 in preparation of 0.1N sodium thiosulfate solution?

1547

Discuss the potential medical applications of Protactinium isotopes in cancer treatment or imaging techniques.

547

How Many grams of solid iodine are produced by the decomposition of 25.4g of hydrogen iodine gas?

2986

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