+2 CHEMISTRY IMPORTANT QUESTIONS 2021(Chapter wise) CHAPTER 2-SOLUTIONS 1. State Henry's law and write any two applications. 2. State Raoult's law. 3. Why Raoult's law is considered as a special case of Henry's law? 4. What are ideal solutions? 5. A mixture of chloroform and Acetone shows which type of deviation? Explain with the help of graph. 6. What are colligative properties? Give examples. 7. What are azeotropes? 8. What is osmotic pressure? 9. Explain the principle of reverse osmosis? CHAPTER 3-ELECTROCHEMISTY 1. Write Nernst equation for Daniel cell and Mention the cathode and anode 2. Explain the variation of conductivity and molar conductance with concentration 3. Write the difference between primary cell and secondary cell? 4. Write the anode reaction, cathode reaction and complete cell reaction for any one primary cell and secondary cell 5. What is corrosion? write any four methods for the prevention of corrotion? 6. Write down the cathode and anode reaction and complete cell reaction for daniel cell and write its representation. 7.Select three strong electrolytes that can be used to determine the conductance of Acetic acid, CH3COOH. CHAPTER 4-CHEMICAL KINETICS 1. What is order of a reaction? 2. Explain molecularity of a reaction? 3. Which are the factors affecting rate of the reaction? 4. Write the integral equation for first order reaction? 5. Write the equation for the calculation of half life period of a first order reaction. 6. What are pseudo first order reactions? 7. Write down arrhenius equation and explain it's terms 8. Explain the variation of rate of a reaction with temperature CHAPTER 8-d & f BLOCK ELEMENTS 1. What are transition and inner transition elements? 2. Zn, Cd and Hg are not considered as transition elements. why? 3. Transition elements are paramagnetic.Account for it. 4. Transition elements form coloured compounds.give reason. 5. Why transition elements can form a number of complexes? 6. Transition elements are good catalysts, why? 7. Explain the preparation of potassium dichromate and potassium permanganate. 8. Draw the structure of chromate ion and dichromate ion 9. Draw the structure of manganate and permanganate ions 10. What is lanthanoid contraction?,what is the reason for it? 11. What are the consequences of Lanthanide contraction? 12. What are the uses of d and f block elements? CHAPTER 10-CO ORDINATE COMPOUNDS 1)Give the IUPAC names of the following: a) K4[Fe(CN)6] b) [Fe(H2O)6]SO4 2)Represent the following: a) Hexamminecobalt(lll)chloride b) Tetraaquadihydroxidochromium(lll)chloride 3)Write the co ordination number, oxidation state of metal in the following. a) Li[AlH4] b) Fe(NH3)6]SO4 4)Name the four structural isomers.... 5) Name the type of isomerism shown by [Fe(NH3)3(H2O)3]Cl3. 6)Represent geometrical isomers of the following: K2[PtCl4Br2]. 7)Represent the optical isomers of [Cu(en)3]SO4 CHAPTER 10-Haloalkanes & Haloarenes 1)Write three differences between SN1 rn.and SN2 rn. 2)Explain Sandmeyer's reaction. 3)Chlorobenzene is very less reactive.Why? 4)Write two examples for Nucleophilic substitution reaction of chloroethane. 5) Write two examples for polyhalogen compounds. 6)Explain Friedel -Crafts alkylation reaction of chlorobenzene.?... 7)What will be the product formed when Chlorobenzene is treated with nitrating mixture...? Chapter 11-Alcohols Phenols & Ethers What will be the product formed when formaldehyde is treated with Methylmagnesium bromide and subjected to hydrolysis.... Write the equation. 2)Convert chlorobenzene to phenol.Write equations. 3)Using a suitable example explain Kolbe's reaction. 4) Explain the manufacture of ethanol from molasses. 5) Describe Lucas test for distinquishing alcohols. 6) Explain Williamson's synthesis using a suitable example. 7) What is anisole? What will be the product formed when anisole is treated with HI, hydogen iodide. 8)What is picric acid.? Convert phenol to picric acid.Write equation. 9) Alcohols are soluble in water.What is the reason.? Chapter 12-Aldehydes, ketones &Carboxylic acids 1) Explain Rosenmund's reduction with a suitable example. 2) Convert toluene to benzaldehyde.Write equations. 3) Explain Gatterman - Koch reaction.write equation. 4)Explain Clemmenson reduction with a suitable example. 5) Describe Wolff Kishner reduction using an example. 6) Explain Aldol condensation. 7) Describe Cannizzaro reaction with a suitable example. 8) Chloroacetic acid is a stronger acid than acetic acid.Why? 9)Explain HVZ Reaction, with example. CHAPTER 13-AMINES 1)Write one example for a secondary amine.Give its IUPAC Name. 2) Explain Hoffmann bromamide reaction.Write equation. 3)Methyl amines are more basic than ammonia.Why? 4) Suggest a method for distinquish Primary amine, Secondary amine & Tertiary amine. 5)Explain Carbylamine reaction. Write equation. 6)What happen when aniline is treated with Bromine water. 7)Write the equation for coupling reaction of phenol with benzene diazonium chloride . CHAPTER 14-BIOMOLECULES 1. Which of the following is a polysaccharide a) Maltose b) sucrose c) Fructose d) cellulose 2. Write any two methods of preparation of glucose 3.Write one example each of monosaccharide and oligo saccharide 4.What is invert sugar? 5.What is the basic structural difference between starch and cellulose? 6.What are polysaccharides ?give two examples of polysaccharides 7.What is a peptide linkage? 8. What is denaturation of protein? 9. Write any three differences of RNA and DNA 10. Differentiate between nucleoside and nucleotide 11. Write the monomeric units in the following biomolecules Starch Protein Nucleic acid 12. Why invert sugar is leavorotatory? 13. What is glycosidic linkage? 14. Differentiate between reducing and nonreducing sugar
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