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Assignment, , Class:- X, , SANKALP, , … a promise to strengthen roots and to compete together., , One step ahead for School / Board, Pre-Foundation for JEE / NEET / KVPY / OLYMPIAD/NTSE, , Carbon and Its Compound,  One Mark Questions:, 1., , 2., , 13. What type of bonds are present in hydrocarbons ? Why are they insoluble in water ?, , Name the organic compound, which can be, produced by fermentation of sugar and is a, constituent of cough syrup., , 14. Why do some people add common salt during, the preparation of soap?, , Name the main products formed when:, i. Ethanol is oxidized by an alkaline, solution of KMnO4, ii. Ethanol is heated with conc. H2SO4, , 3., , What is denatured alcohol?, , 4., , Name the product formed besides soap that, is obtained during saponification process., , 5., , The molecular formula of the consecutive, , 15. Why have detergents replaced soap as a, washing agent?, 16. Explain why ethene decolourises bromine, water whereas ethane does not., 17. What is meant by saponification?, 18. What is vinegar?, 19. (a) Give one advantage of detergents over, soap., (b) Why does soap form white precipitate with, hard water?, , members of a homologous are C 6 H14 and, , C 7 H16 Wr ite t he molecul ar formula of, , 20. What are the two properties of carbon which, lead to the huge number of carbon, compounds we see around us?, , members having 9 and 11 carbon atoms of, this homologous series., 6., , Write the names of functional groups present, in (a) ethanol (b) ethanoic acid., , 7., , The struct ural f ormula of an ester is, ,  Two Mark Questions:, 21. Give reason for the following:, i. Burning of ethanol gives CO2 while, ethanol when oxidized with alkaline, KMnO4 produces ethanoic acid., ii. Alcohol supplied for industrial purpose is, mixed with copper sulphate., , C 2H5 COOCH3 Write the molecular formula, of the alcohol and acid from which it would, have been formed., 8., , 22. Complete the following equations and write, the names of products formed:, , The molecular formula of two members of a, homologous series are C3H4 and C 6 H10 ., , 9., , i., , Which of the following belonging to the same, homologous series? And why?, C3H8, C3H6, C4H8, C4H6., , heat, , C 3 H7 COOH  NaOH , heat, , ii. CH3 OH  O2 , , 10. What are addition reactions ? Give example., , 23. Explain with reason : Detergents made up of, molecules, in which branches is minimum,, are preferred these days., , 11. What is t he di fferen ce be tween two, con secut ive mem ber s of a h omologous, series., i. in terms of molecular mass., ii. in terms of number and kind of atoms?, , 24. Name the product obtained and the chemical, equations for oxidation of ethanol to different, stages., , 12. Complete the equation :, , 25. Intake of small quantity of methanol can be, lethal. Comment., , heat, , C2H5 COOH  NaOH , , Sankalp Classes, Bhagkohaliya, Near-Rani Saraswati Vidya Mandir, Forbesganj,, , (1), , :-06455-295018 P:- 7858047468

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Assignment, , Class:- X, , 26. An organic compounds 'A' is a constituent of, antifreeze. The compound on heating with, oxygen forms another compounds B which, has a molecular formula C2H4O2. Identify the, compound 'A' and 'B'. Write the chemical, equation of the reaction that takes place to, form the compound 'B'., , 37. A neutral organic compound A of molecular, formula C2H6O, on oxidation with potassium, dichromate and sulphuric acid, gives an, acidic compound B. The compound A reacts, with B on warming in the presence of conc., H2SO4 to give a sweet smelling substance C., Identify A, B and C., , 27. Compound 'X' is a symmetrical gaseous, hydrocarbon. Its molecular mass is 28. Write, the chemical reaction of 'X' with H2 gas with, Nickel catalyst., , 38. Three bottles without labels are known to, contain ethanol, ethanoic acid and soap, solution separately. How will you test which, bottle contains which substance?, , 28. An organic compound 'X' which is sometimes, used as an anti-freeze has the molecular, formula C 2 H 6 O. 'X' on oxidation gives a, compound 'Y' which gives effervescene with a, backing soda solution. What can 'X' and 'Y', be? Write their str uctural formula and, chemical equation involved., , 39. What will be the formula and electron dot, structre of (a) cyclopentane (b) ethanoic acid, (c) propane., , 29. What are synthetic detergents? Give one, example of synthetic detergent. Write its two, advantages over soap., 30. Why is mixture of water and alcohol used, instead of water in radiators of vehicles in, cold counties ? Give one reasons., ,  Three Mark Questions:, 31. (a) Write the chemical equation representing, the conversion of ethane., (b) Name the product obtained when butanol, is oxidized by acidified K2Cr2O7., 32. What happens when ethanoic acid reacts, with (i) Magnesium (ii) Sodium carbonate and, (iii) Sodium hydroxide? Write the necessary, chemical equation in each case., 33. What are esters? How are they formed?, Where do they occur in nature? Give one, example., 34. Give an example each of (i) a straight chain, hydrocarbon, (ii) branched chain hydrocarbon, and (iii) ring chain hydrocarbon., 35. What is an homologous series ? Explain with, an example., 36. An organic compound ‘A’ has molecular, formula C3H8O. This compound, on heating, with alkaline potassium permanganate or, acidified potassium dichromate, gives, another organic compound ‘B’ which turns, blue litmus red. Identify the compound ‘A’., Write chemical equation of the reaction that, takes place to form the compound ‘B’. Name, the compound ‘B’., , 40. Draw the structure of the following, compounds:, (a) Bromopentane (b) Butanone (c) Hexanal, Are structural isomers possible for bromopentane?, ,  Five Mark Questions:, 41. Chemical compound 'A' is produced by, heating 'B' with conc. H2SO4, 'B' burns in air, with blue flame to form CO2 and H2O. On, reactig with K 2 Cr 2 O 7 'B' produced a, compound 'C' which turns blue litmus red., Ideintify the compounds A, B and C. Give, their structures. Describe the process of, preparation of the compound 'A' from sugar., 42. Describe one method for the preparation of, ethanoic acid. Give it's two chemicial two, physical properties and three uses., 43. What is saponification? Describe how soap is, prepared in the laboratory. Explain the, cleaning action of soap with diagram., 44. (a) What are hydrocarbons? Give examples., (b) Give the structural difference between, saturated and unsaturated hydrocarbons, with two examples each., 45. Explain the given reactions with examples:, (a) Hydrogenation reaction., (b) Oxidation reaction., (c) Substitution reaction., (d) Saponification reaction., (e) Combustion reaction., , Sankalp Classes, Bhagkohaliya, Near-Rani Saraswati Vidya Mandir, Forbesganj,, , (2), , :-06455-295018 P:- 7858047468