EKLAVYA EDUCATION

                                                             CLASS - XII                            CHEMISTRY MODEL PAPER – (043)—2017                                                          SET-3   Time : Three hour                                                                       Max. Marks : 70 General  Instructions :-    1. All questions are compulsory .   2. Question No. 1-5 are very short answer questions and carry 1 mark each.   3. Question No. 6-10 is short answer questions and carries 2 marks each.   4. Question No. 11-22 is also short answer questions and carries 3 marks each .  5. Question No. 23 is value added questions and carry 4 marks .  6. Question No. 24-26 carry 5 marks  7. Use log tables if necessary, use of calculators is not allowed. Q1. What are antifertility drugs .give example?                                                                                                                

1.      Name the defect that shown by crystal of silver bromide. ?   1 2.      The decomposition reaction of ammonia gas on platinum surface has a rate   Constant     k = 2.5 x 10 –4 mol L –1 S –1 .What is the order of the reaction?   1 3.      Give the IUPAC name of the following compound                  C 6 H 5 NHCH 3                                                                                         1 4.      How many octahedral voids are there in l mole of a compound having cubic close packed structure?                                                                                   1 5.      How catalysts increase the rate of reaction?                                                     1               6.      In each of the following pairs of organic compounds, identify the compound Which will undergo SN 1 reaction faster?                                                     2        (a) 2-Isopropyl hexane        (b) 2- Methyl butane