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CHEMISTRY PAPER — 2, (PRACTICAL), , (Maximum Marks: 30), (Time allowed: Three hours), , {Candidates are allowed additional 15 minutes for only reading the paper., , They must NOT start writing during this time.), , eee cee ee ee ee aaa, , Details of the Examination, , (to be filled by the Visuting Examiner), , Lai avca dba tener, , Subject Code, , Date of the Examination, , Centre No., , Batch No., , Sees eat eS OO eer, , Read the questions carefully and follow the given instructions., , Answer all questions., , All working, including rough work, should be done on the same sheet as the resi of the answer., , The intended marks for questions or parts of questions are given in brackets EF, , Mathematical Tables are provided., In addition to the Practical Paper, candidates will also be evaluated in the following:, , Project Work 10 marks, , Practical File §$ marks, , ee eee eee ee eee eee ee EEE IEE, , ‘Top Sheet: To be attached as the first page of the Question Paper.
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CHEMISTRY, PAPER — 2, (PRACTICAL), , (Maximum Marks: 30), , (Time allowed: Three hours), , (Candidates are allowed additional 18 minutes for only reading the paper., , They must NOT start Wuniny during this rime.), , ei em ome nee eee nresrer* nen ee Aen eee aaa caannane oa, , 4LL ANSWERS MUST BE WRITTEN IN THE ANSWER BOOKLET PROVIDED, SEPARATELY., , Question I is an oxidation-reduction titration ttt \ hich sufficient working details are given, All essential working must be shown., , Question 2 is an exercise dealing with identification of organic compounds, , Credit will be given for precise observations recorded and for well-drawn deductions, , Question 3 is an er ercise iit qualitative analysts., , Read the questions carefully and follow the given instru crions., Attempt all questions., , All working, including rough work, should be done on the same sheet as the, rest of the auswer., , The intended marks for gestions ot parts of questions are given in brackets fj., , Attempt all questions., , Question |, You are provided with two solutions as follows:, , » C10 isasolution containing 3:2 gms of potassium manganate (VID (KMnO4), per litre., , C-11 is a solution prepared by dissolving 6:85gms of impure sample of oxalic acid, crystals (H2C204-2H)0) per litre,
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| Question 2, You are provided wi, ith two organic compounds, C-13 and C, Cel3 and C-14., , Perform the experi, , xperiments given b, , elow, , taking place at every step of the ened athe nr compan Les, , Note the smell of th, é substance f er, fie eolour of the precipitate ce oe if significant, the colour of the solution obtained, produced and any other observations you may have. State the, , identity of each com, pound on the basis of the expenments and observational changes., , PROCEDURE:, , (a) Substance C - 13, , (NaHCO3) solution., , (ii) Take Imi of C-13 ina test tube, solution., , Take 2ml of C-13 ina, , (iil), acid (H2S04) followed, , (b) Substance C-14, 4 add 2ml of Fehling's solution and heat, , (1) Take 2ml of C-14 in a test tube an, , strongly:, mi of Tollen’s reagent and heat, , 14 in atest tube and add 2, , Take 2ml of C, strongly:, and add 0.5g ©, , 14 in a test tube, lution. Heat the mixture to, , Take 2m! of C- |, m hydroxide so, , smi of ammoniu, minutes.
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}, , es, f, 3, $, 3, 2, ~~, , é, , f aay * qualitatively the substance C-1§ which contains one anion and one cation. Identify, , ry, , #., , gest sors., &, ¢, a, , § (g) While testing for anion you must mention:, ‘ (i) How the solution/soda extract was prepared., (ii) How the gases were identified., , (iii) The confirmatory test for anion., , Show the results as required to the Visiting Examiner., (b) While testing for cation you must mention:, , (i) How the original solution for group analysis was prepared., (ii) The formal group analysis with pertinent group reagents., (11) The confirmatory test for cation., , Show the results as required to the Visiting Examiner., , Note: Use of qualitative analysis booklet/table is not allowed., , Question 4, , Show the following to the Visiting Examiner for assessment:, , [10], (a) Project 5), , (b) Chemistry Practical File.
