Formatting page ...
The Shri Ram School Moulsari Campus Second Term Examinations-2019-20 Class: XII Chemistry Time: 3 hrs M.M.: 70 (Candidates are allowed additional 15 minutes for only reading the paper. They must NOT start writing during this time) All questions are compulsory Question 1 is of twenty marks having four sub parts all of which are compulsory. Questions 2 to 8 carry 2Marks each with two question having internal choice. Question 9 to 15 carry 3Marks each with two question having internal choice. Question 16 to 18 carry 5Marks each with all question having internal choice. Balanced equations must be given wherever possible and diagrams where they are helpful. When solving numerical problems, all essential working must be shown. In working out the problems, use the following data: Gas constant R = 1.987 cal deg-1 mol-1 = 8.314 J K-1 mol-1 = 0.0821 L atm K-1 mol-1 ,1 L atm = 1 dm3atm = 101.3J There are nine printed sides to the paper. Answer all questions Question 1 a. Fill in the blanks with appropriate words/phrases: [4] [Conductivity, equivalent weight, electrochemical equivalent, 6, 8, 12, 4, C6H5NO2, C6H5OH, C6H5NH2,C6H5N2+BF4- ,C6H5F, increases, remains same, C6H5F, Phenol, urea, formaldehyde, butadiene, melamine, terepthalic acid,decreases] i. The coordination numbers of hcp is . and that of an octahedron void is .. Integrity Sensitivity T2/RR/Chem/2019-20 Pursuit of Excellence Pride in One s Heritage Page 1
|
