According to IS:800, in the Merchant Rankine formula the value of imperfection index (n) is_______________? August 15, 2021January 20, 2019 by admin According to IS:800, in the Merchant Rankine formula the value of imperfection index (n) is_______________? A. 1.0B. 1.4 C. 1.8 D. 2.0