DISMISSAL LEAVES AUSTRALIA FACING A BITTER ELECTION
reaction to Gov Gen Sir John Kerr's action in dismissing Australian Prime Min noted; Whitlam charges that Kerr had acted unconstitutionally and hints that if his Labor party is returned to power, he might try to abolish office of Gov Gen and Sen, which precipitated nation's current pol and econ crisis by refusing to pass natl budget; Opposition Liberal party head Malcolm Fraser is sworn in as caretaker Prime Min, even though his party is minority in House of Reprs; other development noted; illus (M)