Question

বাংলাদেশের সাংতি বৈচিত্র খ য ও উৎসবের ‘নিক ব্যাখ্যা কর।​

Answer 1

Answer:

Crystallization is the process by which we can obtain crystals of copper sulphate. In this process, a few drops of dilute sulphuric acid is added to water. The water is then boiled & as it starts boiling, copper sulphate powder is added with stirring. The powder must be added on till the solution becomes saturated.