Hi Anuja,
Try below steps once and check,
First step: Create one more global variable in IMPL class of the radio button component and set with flag value when the second button clicked in web ui.
Second step: Use this gloabl variable value in start of the .htm page and set the GV_TAB value to Questions if it is not empty and then wintin the same if condition clear the global variable so that when user clicks on RISKS tab system will navugate to risks tab.
Best Regards,
Dharmakasi.