what does optical rotation and specific rotataion means,difference between them
1)What's the meaning of Absorption,give a example. 2)What's the meaning of Adsorption,give a example. 2)what is the difference between Absorption and Adsorption.
what is icdas abbrivation
why SGF media used for dissolution . What is the use of it .can we use other media of lower pH instead ot this?
What is normality
Why we show ammonia vapours to tlc plate?to which compounds?
what is mean by content uniformity?
A ha tc is actual defination of retention time?
WHAT IS DIFFERENCE BETWEEN RRT AND RRF IN HPLC
what is poarimeter, why it is used in pharma,and explain briefly about polarimeter?
how ir specrometer is calibrated ?
what is main use of primary standards in caliration