Chemistry Interview Questions
Questions Answers Views Company eMail

cefoperozone and sulbactam inj. hplc test method

Graviti Pharmaceuticals,

2097

how peak can be sharp in hplc when it is come flat

Graviti Pharmaceuticals,

6 17710

what is Fourier Transform

Graviti Pharmaceuticals, GVK,

3 8325

What is descriminatory disolution medium ?

Cipla, Graviti Pharmaceuticals,

3 9049

what is the difference between loss on drying in ordinary oven technique and vacuum oven technique

Divis Laboratories, Ranbaxy,

4 14004

what is the difference between the Purity and Potency of drug substance

Divis Laboratories, Graviti Pharmaceuticals,

1 10620

what is the difference between LOSS ON DRYING IN ORDINARY OVEN TECHNIQUE AND VACUUM OVEN TECHNIQUE

6 23822

why we are using only lead standard solution for Heavy metals test? what is the purpose of this?

Divis Laboratories,

4 12449

what is the difference between the ordinary loss on drying technique and vacuum oven technique?

Divis Laboratories,

1 7945

what is the difference between gc& hplc. why we r not calculating purity by gc for final products

Biocon, Cipla,

5 15473

what are peak purity,peak purity index,peak thresold

2 16813

1)why use benzophenon,uracil in hplc calibration. 2)why use sucrose in polarimeter calibration. 3)what is S/N ratio, noise and drift in hplc 4)how we can find lod and loq in method validation

1 13788

What is the molarity of a NaOH solution if 32.47ml. isrequired to titrate 0.6013g of potassium hydrogen phthalate?

2 8751

What is (Q) point dissolution?

Cipla, Macleods,

6 24384

Why we are using K2Cr2O7 for control of absorbance in UV?

2 12356


Un-Answered Questions { Chemistry }

what is classification of elemental impurities? what is risk assement in elemental impurities?

316


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

702


What is the nature of the bonding interaction between a metal and an olefin? : Polymer Chemistry

540


Why do different polymers have different properties? : Polymer Chemistry

680


Explain how buffer works?

609






What forms the basis for colorimetric determination?

694


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?

1682


what is difference in ods I ods II is this is realy from sorbent / packing characteristics or from other means

1469


Which is the highly polar and highly non polar column in HPLC?

1751


Why we are use glass viscometer, and what is calculation manual calculation formula as per USP. How many types of viscometre in glass type viscometer.

1844


What is the role of stannous chloride?

915


Why are metals often good catalysts? : Polymer Chemistry

540


what is the extinction coefficient for Indomethacin or at 319nm wave length.

3492


WHAT TYPE OF QUESTION ASK FOR POST SENIOR TECHNICAL ASSISTANT IN DRDO

7638


Why only 1.2 million lux hours require in photostability study?

427