The normal procedure for obtaining crystals of many compounds is to use a ___ solution

Calculate the normality of oxalic acid solutions containing 0.895 g crystals in 250 cm^(3) of its solutions.

Potassium dichromate is an orange colour crystal and is an important compound used as an oxidant in many reactions How will you account for the colour of potassium dichromate crystals?

Which of the following is used to obtain pure copper sulphate in the form of crystals from its saturated solution?

The biochemical procedure used to detect human chorionic gonadotrophin is

The biochemical procedure used to detect human chorionic gonadotrophin is

Chrome iron ore (x) was heated with dry Na_(2)CO_(3) in the presence of quick lime and air in a furnace. The mixture was extracted with water and filtered. The filtrate was yellow(A) which on adding conc. H_(2)SO_(4) turned to orange red. The solution was evaporated and cooled. The crystals of B were obtained. To the crystals in aqueous solution, NH_(4)Cl was added. On fractional crystallization, orange red crystals (C ) is formed. B was obtained by fractional crystallization. The compound crystallized first was