how to select short coloum and long coloumn for new molecule

1809

What are the products formed after cod analysis?

823

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?

1447

What are some of the polymers that you encounter every day? Describe their physical properties. : Polymer Chemistry

684

Ph meter can show more than 14 ph reading? Why ph range in between 1 to 14 only?

299

Why we have to add 200mg Na2CO3 in preparation of 0.1N sodium thiosulfate solution?

1124

Explain the relations between number of carbon atoms in alkanes and retention time ?

1620

Identify problem faced when mass spectroscopy is used with HPLC system ?

1371

Please give idea about method development for cleaning method and how maco level establish

264

i want model written test paper for the post of analyst in IOCL(indian oil corporation ltd) any one pls help me

2180

Define an origin of electrode potential? : Electrochemistry Corrosion

534

What is the calibration of uv process and preparation

1492

Define Vulcanization?

693

Explain the properties of carbohydrates?

535

What group of elements were called the inert gases?

572