During the active phase of labor the minimum effective dilatation of cervix in primigravida should be at the rate of: (A) 0.5 cm/hr, (B) 1cm/hr, (C) 1.5 cm/hr, (D) 2 cm/ hr
Answer is B. Effective dilatation of cervix in a primigravida during active phase of labor is 1cm/hr