Which human activity most significantly increases the risk of ground-level smog formation in large cities?
Operating gasoline-powered vehicles
Ground-level (photochemical) smog forms when nitrogen oxides and unburnt hydrocarbons react in the presence of sunlight to produce ozone, PAN and other irritating secondary pollutants, which hang over cities as a brown haze.
The exhaust of petrol (gasoline) vehicles is the main source of both nitrogen oxides and hydrocarbons in large cities, so heavy vehicle traffic most significantly raises the risk of smog formation.
Recycling household waste reduces waste and resource use, solar panels produce electricity without burning fuel, and trees along roads absorb pollutants – all of these tend to lower pollution rather than increase smog.
Hence, Operating gasoline-powered vehicles.
Important Questions from Environmental Chemistry
Release of chemicals to the environment in US is tracked by __________.
The waste management technique that involves the use of micro-organisms to remove or neutralize pollutants from contaminated site is called:
Besides CO2, the other green house gas is
Kyoto Protocol is associated with
Arsenic problem in India is primarily due to
