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Chemistry Interview Questions
Questions Answers Views Company eMail

What is the requirement to give RFlow when using RID detector?

3082

What is unsaponifiable matters?

1 5111

what happen when aminoacids react with alcohol

GVK, Reddy Labs,

1 6433

Is sonication essential in solubility testing of a drug substance?

Aurobindo,

6 16708

what is different between volumetric solution and general solution

1 18857

what is primary solution and secondary solution

2 8423

what is RI detector Cut-off Value

Mylan,

1 10003

In Related Substances Test how we can reside the limit of impurity ?

MSN Pharma,

2 11392

When i inject amines and acid on HPLC then which peak will elut first?

Sun Pharma,

4 13581

In pharmacopeal solibility parameter of a material, is et essential to test all paramete? If 70-75% parameter passes can we assess that the material is satisfactory or not?

Aurobindo,

1 5388

Why triethylamine and o-phosphoric acid used while setting pH of mobile phase during HPLC Analysis?

Hapten Healthcare, Pharmaceutical,

6 33857

why RID detector is used for selective materials like Mannitol, Hydroxyethyl Starch and Sorbitol?

5 12646

what is a primary standard? what is a secondary standard solutions?

Practical Viva Questions,

1 5938

for which type of applications gas chromatography is used?

2 6761

for which type of applications gas chromatography is used?

2 6564


Un-Answered Questions { Chemistry }

What are constituents of brass?

1219


why we use glass fiber filters use in some situation?

800


Why a1% value is used for some product ? What is the criteria for selection a1% value ?

2346


how a particular wavelength can be different for a particular compund while analysing by uv and by HPLC.

2300


How they found 1mL of K.F reagent is equivalent to 5mg of water and if we change the composition of K.F reagent, is it can neutralize more amount of water?

1778


please explain about aluminium hydroxide assay

1132


can we Consider the Purity threshold and Purity angle in place of peak purity for the specificity test for method verification

1843


Differentiate between modern periodic table and mendeleevs table?

1167


HPLC in sequences analysis was taken wrong method and one blank & Standard is running so what to do

1246


why should we perform dissolution PVT calibration only by UV spectrometer, not by HPLC ?

1708


when are the result of sbi clerical come

2436


Mention the different types of conductivities.

1262


what is mean by dissolution biowaiver study?

933


In which situation we require to prepare the standard solution from sample in Related substance method?

777


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

2184