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Chemistry Interview Questions
Questions Answers Views Company eMail

why we can use only 4 and 7 and 9 buffers in pH calibration

Chola, Cipla,

1 5340

How to do regeneration of Metacarb Pb plus column?

2580

we calibrate HPLC once in 6 months while iam doing calibration i came to know that calibration was failed. then how can i justify that the samples analyzed on the system during this 6 months was wright? how can i forward in to the next step for those batches?

5 12779

What is the solvent/material used to balance spirit level in analytical balance?

Glenmark, MMC Health Care,

5 13730

why plane of polarized light rotated by opticaly active compunds?

Glenmark,

1 6330

why do we use around only 60 mg of K2cr2o7 in the UV calibration -control of absorbance test?

Reddy Labs,

3 14377

why plane of polarized light rotated by opticaly active compunds?

Glenmark,

1 4416

why plane of polarized light rotated by opticaly active compunds?

Glenmark,

1 7779

Can any one tell what is RECALL OF PROCEDURES is

Macleods,

1 3614

what is the difference between capillary and glass column in GC

1 8229

how to do heavy metal test for colour sample?

Cipla,

1 5032

differance between L1 and L7 columns

Everest,

5 25653

what is basc principle of the HPLC,IR,UV AND GC? what is difference between diffusion spectra and transmision spectra in IR?

Cadila, Dr Reddys, GICC, Mylan, Sygene, Torrent Pharma, Zydus Cadila,

1 21415

plz tall me that any pharmacopeia and guideline is par meted to use 1.68,4.01,7.00,9.00,12.45 buffer for ph meter calibration

Torrent Pharma,

2 4954

what is mean by 21 cfr

1 6772


Un-Answered Questions { Chemistry }

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

872


How would you describe the orientation of the ligands around the zr center in the homogeneous zirconium catalyst? : Polymer Chemistry

1015


How much is the standard area for glc analysis

2286


What is stepping ripple and step accuracy

1187


why we are using benzene, anyline in acetic anhdride assay titration method?

2114


why xterra column require to use at higher ph?

919


WHY given much noise PDA dector then VWD Dector

2100


Fresh form of water is obtained from?

1164


How require to perform linearity as per ANVISA? What are the acceptance criteria?

1334


What should be the level/ Percentage of Arsenic in Arsenic free zinc.

2233


Protactinium is part of the actinide series. Discuss the significance of this series and its implications for nuclear chemistry.

715


if peak get problamatic then what require to do?

805


Q1. Why did you enter the field of chemistry? Q2. What has motivated you to take chemistry as your professional subject and have you motivated anyone towards your field?

2294


which batch require to use for analytical method validation?

805


composition of gun metal

2103