What does a fractional distillation column separate in petroleum refining?
A) Atoms by atomic number directly B) Electrons by charge only C) Hydrocarbon fractions by boiling-range differences D) All gases […]
Chemistry, Industrial Chemistry
Industrial Chemistry
Chemistry, Industrial Chemistry
What does the chlor-alkali industry produce from brine electrolysis?
A) Chlorine, hydrogen and sodium hydroxide B) Only iron and carbon dioxide C) Ammonia and sulfuric acid D) Aluminium and […]
Chemistry, Industrial Chemistry
What does the Hall–Héroult process produce from alumina by electrolysis?
A) Aluminium metal B) Ammonia C) Sodium carbonate D) Sulfuric acid Answer: A Explanation: Aluminium ions are reduced at the […]
Chemistry, Industrial Chemistry
What substance is the first major purified intermediate from bauxite in aluminium production?
A) Ammonia B) Sodium chloride C) Sulfur dioxide D) Alumina, Al₂O₃ Answer: D Explanation: Bauxite is refined to aluminium oxide. […]
Chemistry, Industrial Chemistry
Which catalyst is commonly used for SO₂ oxidation in the contact process?
A) Sodium chloride B) Calcium carbonate C) Ethanol D) Vanadium(V) oxide Answer: D Explanation: V₂O₅ catalyzes SO₂ + O₂ conversion […]
Chemistry, Industrial Chemistry
Which catalyst is typically used in the Haber ammonia process?
A) Pure table salt B) Liquid water only C) Iron-based catalyst D) Gold metal exclusively Answer: C Explanation: Iron surfaces […]
Chemistry, Industrial Chemistry
Which elements are combined industrially in the Haber process?
A) Oxygen and chlorine B) Carbon and sulfur C) Neon and argon D) Nitrogen and hydrogen Answer: D Explanation: The […]
Chemistry, Industrial Chemistry
Which gas is formed at the cathode in electrolysis of aqueous brine?
A) Chlorine B) Nitrogen C) Sulfur dioxide D) Hydrogen Answer: D Explanation: Water is reduced at the cathode in the […]
Chemistry, Industrial Chemistry
Which industrial process converts SO₂ to SO₃ for sulfuric acid manufacture?
A) Contact process B) Haber process C) Solvay process D) Hall–Héroult process Answer: A Explanation: Oxidation of sulfur dioxide is […]
Chemistry, Industrial Chemistry
Which process is widely used to produce sodium carbonate from brine?
A) Haber process B) Contact process C) Solvay process D) Ostwald process Answer: C Explanation: The Solvay process uses brine, […]