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

why we use pyridine to determine moisture content of acetonel

Lee Pharma,

2 14423

What impact analysis required for out of calibration and how to proceed

Aventis,

2 9086

Which type of analysis we have to done uv spectroscopy

2 9849

From where 16 or 5.545 is derived in theoretical plates calculation formula by USP or JP/BP/DAB and what is meaning of this coefficient and impact in calculation ?

Nectar Lifesciences,

2 12867

Does we get same value by LOD and KF titeration of a single sample

MSN Pharma,

3 8041

Which form of Sucores is harmfull to humans ?

2308

What is the difference between uplc and hplc

AAU Assam Agricultural University, Hetero,

4 26744

why should mostely use KH2PO4&K2HPO4 in HPLC?

Dishman, GVK,

1 7302

What is meaning of audit trail in hplc

DRL, Lee Pharma, Raks Pharma,

3 25063

i have 5liter 98% h2so4 now, i want to convert it in 92% by adding water....so...howmuch water i have to add ?

Infosys,

2 7359

How we can determine OOT limit in Stability

MSN Pharma,

2 14621

why we are using k2cr207 in uv calibration ? why we r not using kmno4?

Glochem, Sidmak Laboratories,

1 6837

can we use the same detector in HPLC as well GC and what could be the differences we can find in the final chromato graph in any aspects?

Cipla, XYZ,

2183

WHAT IS DIFFERENCE B/W MALTINGRANG/DSC

Glochem,

1 2873

Home heating oil or furnace oil what is made from? Can (base oil plus diesel/kerosen) = home heating oil?

2184

Un-Answered Questions { Chemistry }

composition of german silver

2337

Name the molecule which is characteristically prevalent in sour milk and tired muscles?

1008

in monograph 7 imp are there but in vendor showing 5 imp do not req to include 2 imp for that what will be justification?

723

What is fluidity of a liquid?

1088

WHAT IS THE PARAMETER FOR THE SELECTION OF MOBILE PHASE IN HPLC?

1187

in api coa analytical method given as Ph Europe which api used in formulation in this api coa method given Ph Europe so for Analytical methic for finished product we require to refer Ph Europe monograph ok n.a.? So any extra impurities which is given in USP monograph of api or finished product need not require to monitor on above case n.a.? but how require to do specificity?

601

Why is disodium salt of edta preferred to edta?

1541

What are hard waters?

1022

in sampling of raw material which side is pasted sampled labels

1838

Why do we use KMnO4 in the test of control of obsorbance ? and why do we take specific quantity i.e 57-63mg?

2833

How BIS Decedied the LSF value 0.66-1.02 with calculation.

2182

which are the sizes of capsules?

971

Explain the relations between number of carbon atoms in alkanes and retention time ?

2147

which one is better separation in high pressure liquide chromatogram orlowpressure chromato gram in hplc

2163

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

2326

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