why use of sulfuric acid in roi test in pharmaceutical industry

2488

sir, what does happen ............? naphthal+benzene(or)toluee........> ?

2175

Can a Nascent Hydrogen be used for fuel cell without damaging the equipment and if so how good would it be compared to other type of hydrogen.

2181

For standardization of volumetric solutions, acceptance limit for concentration is considered as 10% of nominal concentration and %RSD as NMT 0.2% (for appropriate no. of replicates). But , if %RSD has not met, what should be further action?

1907

While performing TOC sst analysis Zero shift disabled & sample analysis zero shift enabled why?

2863

using gradient pressure in gas chromatography are not ?using gradient pressure why

3390

Explain Thiele's structure for benzene. What is the difference between thiele's structure and modern structure (resonance hybrid) of benzene?

5225

What is photoelectric colorimeter?

1035

Write the significance of electrochemical series? : Electrochemistry Corrosion

991

Define what is avogadro’s law?

1072

what is the purge flow & how to calculate

2648

Which wavelengths are visible to human eye?

1233

how you fix the limits of impurities?

837

4. Describe the operation of the Craig apparatus. Chapter.3 Equilibrium Processes in Separations

2718

What precaution u take when doing rs preparing

2133