Question

The pollution in city like Delhi may be controlled to great extent

• A. By proper sewage and proper exit of chemicals from factories
• B. By wide roads and factories away from the city
• C. By cleaning city and scanty use of pesticides
• D. All of the above

Answer 1

The correct option is D All of the above

In modern times major types of pollution in urban areas are atmosphere, water and noise. Atmospheric pollution can be controlled to a large extent by location of factories and industries away from cities. Widening of roads will lead to less congestion, reduce idling time of engines of vehicles and ultimately be helpful in controlling atmospheric pollution due to vehicles. Sewage treatment plants and control on use of pesticides will reduce pollution of water bodies and prevent eutrophication of natural ponds and lakes. Clean city surroundings and proper waste disposal will reduce or eliminate breeding grounds of stray animals and disease spreading insect and non insect vectors.