B.Sc 1st INORGANIC TEST SET-A 1. 2. 3. 4. 5. M.M-10 Draw structure of NaCl and describe it ? How will you calculate proton affinity from Born –Haber cycle? Write a note on schottky defects and frenkel defects? Why Li2CO3 is unstable and Na2CO3 is stable ? What do you understand by solvation energy polarizing power SET-B 2 2 2 2 2 M.M-10 1. Draw neat diagram of zinc blende and how it differ from wurtzite structure? 2 2. Calculate proton affinity ∆Hf=-144.3 KJ/mol D=430.9 KJ/mol U0=-648.5 KJ/mol I.E=1311.6 KJ/mol E.A=-347.2 KJ/mol 2 3. Write non-stoichiometric defects ? 2 4. Why silver halides has low solubilities in water ? 2 5. What do you understand by Lattice energy Polarisability 2 SET-C 1. 2. 3. 4. 5. Draw and discuss structure of CaF2 ? Dicuss Born-Haber cycle by taking example of NaCl ? Write a note on n-type and p-type semiconductor ? What is radius ratio rule and give its limitations ? What do you understand by co-ordination no. 6. Why non-stoichiometric NaCl is yellow in colour ? M.M-10 2 2 2 2 1 1