brodidit for students
Industrial and environmental chemistry
Class 12 · Chemistry · 8 questions
Name: ____________________ Date: ____________
Ammonia is made industrially by the:
- A Contact process
- B Solvay process
- C Ostwald process
- D Haber process
The catalyst in the contact process is:
- A Iron
- B Vanadium(V) oxide
- C Nickel
- D Platinum on silica only
Biodegradable waste is broken down by:
- A Metals
- B Sunlight only
- C Microorganisms
- D Plastics
Catalytic converters in cars reduce emissions of:
- A Nitrogen
- B Carbon monoxide and nitrogen oxides
- C Oxygen
- D Water vapour
Eutrophication of lakes is caused by excess:
- A Oxygen
- B Nitrates and phosphates
- C Sodium chloride
- D Sunlight
The Ostwald process makes:
- A Soda ash
- B Nitric acid
- C Sulphuric acid
- D Ammonia
Ozone depletion is caused mainly by:
- A CFCs
- B Oxygen
- C Nitrogen
- D Argon
Acid rain has a pH below about:
- A 8
- B 9
- C 7
- D 5.6
Answer key
1. D, 2. B, 3. C, 4. B, 5. B, 6. B, 7. A, 8. D
Nitrogen and hydrogen react over an iron catalyst.
V2O5 catalyses the oxidation of SO2.
Bacteria and fungi decompose it.
They convert harmful gases to CO2 and N2.
Fertiliser run off feeds algae and depletes oxygen.
Ammonia is oxidised to nitrogen oxides, then nitric acid.
Chlorine from CFCs breaks down ozone.
Normal rain is slightly acidic at about 5.6.