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Organic Chemistry (342) - Inorganic Chemistry (123)
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in determination of(acetone) moister content we are using methanol replaced by pyredine.what hapend in that reaction.
2 9485what is impurity profile. how to interpret this impurity profile to a drug product or drug substance.
2629WHEN AN UN KNOWN SAMPLE IS GIVEN TO U,HOW WILL U START THE ANALYSIS(ie FIRST WHICH TEST TO BE DONE,NEXT,THEN NEXT),HOW WILL U DECIDE WHICH TYPE OF ANALYSIS TO BE DONE FOR IT?
2 10938IN pH CALIBRATION,CALIBRATION IS DONE FOR pH METER OR ELECTRODE?HOW WILL YOU JUDGE THAT THE METER TO BE CALIBRATED WITH 4,7,9.2 BUFFERS?EXPLAIN TEMPERATURE EFFECTS ON pH.
1 11049AT WHAT CONDITIONS WILL YOU ANALYSE A SAMPLE,WHICH ARE PRESERVED AT OTHER THAN THE AMBIENT CONDITIONS?(ie COLD STORAGE SAMPLES BELOW 20* CENTIGRADE?
2054In standard weight box used for calibration of analytical balance there are two numbers (Qty) of 20mg, 200mg,2.oGM weights. Why?
2 16038How to calculate signal to noise ratio by this formula 2H/h where h from where and how to measure
2 10592
discuss the diffrent types of chromatography and their uses. In not more than 10 papers oc not less than 8 papers
Loss of linearity in tkn analysis, possible reasons?
What is chemical oxygen demand?
What is the brigg's raucher reaction?
Why sodium hydroxide used for maintain pH of phosphate buffer
Head-to-tail polymerization of propylene is observed with the [cp2zr(r)]+ catalyst. Explain this result on the basis of molecular-level interactions. : Polymer Chemistry
pls send me the solved paper of health & malaria inspector to santoshmaurya.087@radiffmail.com
how require to select dissolution media? what is discrimination?
using gradient pressure in gas chromatography are not ?using gradient pressure why
Identify problem faced when mass spectroscopy is used with HPLC system ?
Why we have to add 200mg Na2CO3 in preparation of 0.1N sodium thiosulfate solution?
In HPLC calibration, caffeine is used as primary standard for wave length calibration due to caffeine is having dual maxima at 273 & 205 nm and one minima at 245 nm. Any body can give reference of these details from any pharmacopeia (with chapter no.) or any other authentic guideline?
effect of pore size, pore volume, partical size, column length, carbon load on retention time? what is carbon load? what is the use?
What is delay volume?
why we should take dst factor for below 1%moisture samples
