You can find the previous exam papers here - 2008, 2009, 2010 and 2011.
Problem Set #1. 11.2, 11.6, Q4a & b of exam paper 2008, Q1a of exam paper 2010.
Problem Set #2. 2.10, 2.11, 2.21.
Problem Set #3. 9.4, 9.11 (Correction: The y-axis of the figure should be Vn2), 9.16, 9.24 and 9.26.
Problem Set #4. 2.17, 2.18, 9.32, Q5a of exam paper 2011 (Hint: use equation 1.83).
Problem Set #5. 10.2, 10.4 and 10.12.
Problem Set #6. 13.1, 13.12, 13.15 and 13.19.
Problem Set #7. 14.7b, 14.18b, Q5 of exam paper 2009 and Q2a & b of exam paper 2010.
Problem Set #8. 19.5, Q6 of exam paper 2008 and Q3 and exam paper 2010. (Remark: Maximally flat group delay means Q = 1/√3 ≈ 0.577)
Problem Set #9. 19.17, 19.18, 15.3, 15.11 and 15.16.
Problem Set #10. 16.4 (use Fig. 16.3 instead of Fig. 16.1 and replace the most upper resistor with a 600uA current source! Assume the input C of the each switch is 10fF), 16.7, 16.11 (RA=2.01R) and 16.14.
Problem Set #11. 17.2, 17.8, 17.9,17.16, 17.18 and 17.24.
Problem Set #12. 18.10, 18.17, Q3 of exam paper 2008 and Q4 of exam paper 2010.