nagabhushan


{ City } vizag
< Country > india
* Profession * qc chemist
User No # 96356
Total Questions Posted # 2
Total Answers Posted # 7

Total Answers Posted for My Questions # 7
Total Views for My Questions # 23298

Users Marked my Answers as Correct # 14
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Questions / { nagabhushan }
Questions Answers Category Views Company eMail

if the flow rate is increases then any changes in retention time in hplc

 1 Analytical Chemistry 7195

which light is used in FT-IR spectroscopy

Hetero,

6 Analytical Chemistry 16103



Answers / { nagabhushan }

Question { Matrix, 65954 }

what is the difference between M.C and LOD


Answer

by m.c. we have to found out only water content present in the sample
while lod we have to find out water content and any solvents{non volatile}present in the sample

Is This Answer Correct ?    1 Yes 0 No

Question { Torrent Pharma, 3798 }

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


Answer

We have to cover all regions like Acidic ,Basic and Nutrel medium in pH thatsy we use 1.68,4.01,7.00 ,9.0012.45 for 5 point calibration and there is another method for pH calibration that is 3 point calibration in this we use 4.00,7.00and9.20 buffers overall concept is to cover all regions in pH calibration

Is This Answer Correct ?    3 Yes 0 No


Question { 9040 }

why we use kbr
as constant in
the FTIR ?


Answer

because kbr is high molecular weight and high polar and mainly ir in -active

Is This Answer Correct ?    6 Yes 3 No

Question { Reddy Labs, 3454 }

In dissolution test s1 stage we are getting one bowl 40 % out of 6 bowls what is the root cause you find and how proceed next step? ( Q is 80%)


Answer

First raise the OOS and then investigate how it will come because it cross the S3 stage also

Is This Answer Correct ?    3 Yes 0 No

Question { Caplin Point, 5814 }

Why we use methanol as solvent in kf standardisation.
Why not other solvent?


Answer

Because most of organic compounds are easily soluble in methanol and available as very cheap in market and we used dried methanol it contains less water and it acts as media in reaction

Is This Answer Correct ?    0 Yes 0 No

Question { 3159 }

Why we don't add Hcl, HNO3, H3PO4 in residue on ignition, why we add H2SO4


Answer

Because sulphates are more stable at 800 degrees when compared with chlorides and nitrates

Is This Answer Correct ?    1 Yes 0 No

Question { 1329 }

Why karl fisher factor is 5 ?


Answer

Because 1ml of Kf reagent will nuetrlizes the minimum 5mg of water thats y kf factor is between 5-7 mg/ml

Is This Answer Correct ?    0 Yes 0 No