Q159. What is the molar ratio of concentrated hydrochloric acid (HCl) to concentrated nitric acid (HNO3) in the mixture known as aqua regia?Chemistry — NUST Mock By Dogers 3 — Question 159 of 200A. 1:3B. 3:1C. 1:1D. 2:1Practice more Chemistry MCQs for entrance exam preparation on Examora.io.← Previous Question Next Question →