Multiple choice Which of the following matches is incorrect? Leblanc process: Manufacture of Na2SO4 Ostwald process: Manufacture of HNO3 Parke’s process : Purification of silver Thenard’s process: Manufacture of hydrogen peroxide Baeyer’s process: Bauxite refining Reveal answer Fill a bubble to check yourself A Correct answer Explanation Leblanc process is an industrial process for the production of soda ash (sodium carbonate, Na2CO3).