EKLAVYA EDUCATION

                                 CLASS - XII CHEMISTRY MODEL PAPER II– (043)—2018   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 do you mean by F-center.?                                                                            1   Q2 . Why sulphide ores is extracted by froath flotation process.?                                  1 Q 3.  Why Zn,cd,Hg are not considered transition elements,yet they are present in d-         

                      SET-1 -2018                                                          MODEL  SET  PAPER   CLASS - XII CHEMISTRY MODEL PAPER – (043)—2018   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 .Write composition of dettol.?                                                                                         1   Q2 . What is role of NaCN in froath flotation process.?