chi-square?

[VOLTOLINI]

Hi folks,   My doubt is about the chi-square test.   I heard from a colleague that....   When the Ho of independence is rejected in a contingency table you can compare the partial chi-square values with the chi-square value from the table to check if there is one or more partial chi-square values that could reject the Ho alone.   Is it true?   I cannot find this idea in any classic stats text book :(   Thanks for any help !!!     Voltolini