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GOLDCREST HIGH-LATUR ON THE WINGS OF EXCELLENCE CYCLE TEST-07 SUBJECT:-CHEMISTRY GRADE-10 DATE: 06-12-2016 MARKS: 40 TIME: 1 HOURS --------------------------------------------------------------------------------------------------------------------------------------------------------------- General Instructions Answers to this paper must be written on the paper provided separately. You will not be allowed to write during the first 15 minutes. This time is to be spent in reading the question paper. The time given at the head of the paper is the time allotted for writing the answers. The intended marks of questions or parts of questions are given in brackets [ ]. (ORGANIC CHEMISTRY) Question-01 Write the balanced chemical equations for the following reactions/laboratory preparation [12] (a) (b) (c) (d) (e) (f) (g) (h) (i) (j) (k) (l) Ethane and oxygen in the presence of molybdenum oxide. Preparation of methane from anhydrous sodium ethanoate (sodium acetate) Heating ethanol at 443 K (170 0 C) in the presence of conc. Sulfuric acid Ethane from sodium propionate (lab.prep) Ethene from iodo ethane(lab.prep) Ethyne from calcium carbide(lab.prep) Methane from iodomethane Ethyl alcohol from bromoethane Ethane from ethyl bromide Ethyne from ethylene di bromide Ethanol from ethane Ethanoic acid from ethane in presence of oxidizing agent potassium dichromate Question-02 Convert the following (a) (b) (c) (d) (e) (f) [6] Acetic acid to Sodium acetate in presence of sodium bicarbonate Acetic acid to Sodium acetate in presence of sodium hydroxide Heating ethanol (excess) at 1400 C in the presence of conc. Sulfuric acid Ethanol to sodium ethoxide as a test for alcohol Combustion of ethanol in presence of oxygen Ethyne to ethane in presence of Nickel as a catalyst Question-03 (a) Differentiate between Wurtz reaction and Esterification reaction showing a chemical reaction which can act as a chemical test for them. [2] (b) Complete the table with suitable reaction where ever possible OXIDATION REACTION METHANE ETHANE COMPLETE OXIDATION INCOMPLET E OXIDATION CATALYTIC OXIDATION USING( Cu Tube) [5] CATALYTIC OXIDATION USING (MoO) CONTROLLED SLOW OXIDATION USING(K2Cr2O7
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