Suggest suitable materials of construction for the following applications: 1. A 10,000m3 storage tank for toluene; 2. A 5.0m3 tank for storing a 30%w/w aqueous solution of sodium chloride; 3. A 2m diameter, 20m high distillation column, distilling acrylonitrile; 4. A 100m3 storage tank for strong nitric acid; 5. A 500m3 aqueous waste hold-up tank. The wastewater pH can vary from 1 to 12 . The wastewater will also contain traces of organic material; 6. A packed absorption column 0.5m diameter, 3m high, absorbing gaseous hydrochloric acid into water. The column will operate at essentially atmospheric pressure