subjects learning ...

http://iputech.com/syllabus/data_warehousing_and_data_mining

http://www.guardian.co.uk/environment/2011/apr/10/bolivia-enshrines-natural-worlds-rights

try online at

http://www.123eng.com/

http://www.tcyonline.com/exam-preparation

http://www.careerlauncher.com/

http://www.indiastudychannel.com/questions/Category1.aspx

http://www.freshersonline.com/

http://www.funeducation.com/Tests/

http://www.wiziq.com/tests/aptitude-test

http://www.career-tests-guide.com/free-online-aptitude-test.html

http://www.indiabix.com/