Check these really good sites to test yourself or be familiar with the test format before go for the real exam.

1) http://www.jchq.net/ ( There will generate randomly one question per day for you to answer with full explanation full the answer )

2) http://www.examulator.com/phezam/login.php ( Contain 60 question to answer and is a simulator for the real exam ) Recommended !

3) http://www.jdiscuss.com/ ( Another site generate 1 question per day for you to answer with full explanation ever better compare to jchq.net . There also include a free mock exam )

Ref : lcmbryan’s blog

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