1)as per Section 79 (A), 79 (B), the Green belt land can be bought only for the purpose of "educational institutions recognized by the State or Central Government" ,
2)Section 95 (3B) of the Karnataka Land Revenue Act specifically prohibits the Deputy Commissioner from granting permission for conversion of land in the green belt for any other purpose. So no land in the green belt can be converted. However, as stated above, under section 109 of the Karnataka Land Reforms Act, certain lands may be exempted from the provisions of the act and allowed to be used for the purposes of putting up industries, schools, low income housing, etc. So although lands in the green belt cannot be converted, certain types of activities can be exempted, provided special permission is procured. The lands can then be used only for the purposes for which it was exempted.
3)dont purchase the land