3.Some analytical techniques
Qno.1. Choose the correct option A. Which of the following methods can be used to seperate two compounds with different solubilities in the same solvent? a. Fractional crystallization b. Crystallization c. Distillation d. Solvent extraction B. Which of the following techniques is used for seperation of glycerol from soap in soap industry ? a. Distillation under reduced pressure b. Fractional distillation c. Filtration d. Crystallization C. Which technique is widely used in industry to seperate components of mixture and also to purify them ? a. Steam distillation b. Chromatography c. Solvent extraction d. Filtration D. A mixture of acetone and benzene can be seperated by the following method : a. Simple distillation b. Fractional distillation c. Distillation under reduced pressure d. Sublimation E. Colourless components on chromatogram can not be observed by the following : a. Using UV light b. Using iodine chamber c. Using the spraying reagent d. Using infrared light...