http://raydeal-engchat.blogspot.com/

http://mycatprep.com/
http://iimiswhereibelongto.blogspot.com
http://catatit.blogspot.com
http://grammar.quickanddirtytips.com/
http://www.fireup.co.in/
http://tcyoline.com/
http://mockcat.com/

for grammer:
http://www.pagalguy.com/forum/english-resources/29266-grammar-for-cat-08-beyond-22.html
http://cat.jumbotests.com/tests/grammar-for-cat
http://www.grammar-cat.com/practice/writing/word_class.html
http://www.ascenteducation.com/india-mba/iim/cat/questionbank/Archives/May2002/gram2105.shtml
http://mycatprep.com/CATGrammar.html
http://www.write-better-english.com/correct-grammar.aspx
http://cat.jumbotests.com
http://www.managementparadise.com/home.php
http://www.rediff.com/getahead/2008/sep/22cat1.htm
http://www.wiziq.com/home/

apnea http://en.wikipedia.org/wiki/Apnea