Senior BJP MLA K G Bopaiah, who as the speaker of the Karnataka Assembly had disqualified 16 MLAs and bailed out the B S Yeddyurappa government ahead of a no-confidence vote in 2010, was today appointed the pro-tem speaker to conduct the crucial floor test today. The appointment riled the Congress, which is likely to move the Supreme Court against it. The Yeddyurappa government is set to face the floor test at 4 pm as directed by the Supreme Court yesterday.