ISC previous years question papers

The above file contain question and answer of isc board paper of
year
2013,2012,2011,2010,2009

quality is of stuff is normal with few exception
like

page 47 of physics error in scanning (to LHS is Readable)

few question are not answered properly,By that i mean
(one from section B of computer and other i forget{it is diffcult to rem stuff})
computers..:
for textbook theory i would suggest q & a are great in above pdf but for programs
i would say use your brain.
physics..:
all fine
chemistry..:
damn that organic
mathematics..:
always awesome

if need any help , or suggestion ,or complain u can contact me on
email id:deep000mumbai@gmail.com / toad000sage@gmail.com