Chemistry · Textbook solutions

Some Analytical Techniques

Every solved example, exercise, and miscellaneous question, in the order the textbook teaches them. · 23 questions

Exercise

23 q

Practice · 5

Choose the correct option
Ex Q.1 (A) $Which of the following methods can be used to seperate two compounds with different solubilities in the same solvent?$
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Ex Q.1 (B) $Which of the following techniques is used for seperation of glycerol from soap in soap industry ?$
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Ex Q.1 (C) $Which technique is widely used in industry to seperate components of mixture and also to purify them ?$
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Ex Q.1 (D) $A mixture of acetone and benzene can be seperated by the following method :$
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Ex Q.1 (E) $Colourless components on chromatogram can not be observed by the following :$
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Practice · 17

Answer the following
Ex Q.2 (A) $Which of the following techniques is used for purification of solid organic compounds? a. Crystallisation b. Distillation$
Ex Q.2 (B) $What do you understand by the terms a. residue b. filtrate.$
Ex Q.2 (C) $Why is a condenser used in distillation process?$
Ex Q.2 (D) $Why is paper moistened before filtration?$
Ex Q.2 (E) $What is the stationary phase in Paper Chromatography?$
Ex Q.2 (F) $What will happen if the upper outlet of the condenser is connected to the tap instead of the lower outlet?$
Ex Q.2 (G) $Give names of two materials used as stationary phase in chromatography.$
Ex Q.2 (H) $Which properties of solvents are useful for solvent extraction?$
Ex Q.2 (I) $Why should spotting of mixture be done above the level of mobile phase ?$
Ex Q.2 (J) $Define : a. Stationary phase b. Saturated solution$
Ex Q.2 (K) $What is the difference between simple distillation and fractional distillation?$
Ex Q.2 (L) $Define a. Solvent extraction b. Distillation.$
Ex Q.2 (M) $List the properties of solvents which make them suitable for crystallization.$
Ex Q.2 (N) $Name the different types of Chromatography and explain the principles underlying them.$
Ex Q.2 (O) $Why do we see bands separating in column chromatography?$
Ex Q.2 (P) $How do you visualize colourless compounds after separation in TLC and Paper Chromatography?$
Ex Q.2 (Q) $Compare TLC and Paper Chromatography techniques.$

Practice · 1