1.
What is the most common form of pollution?
Correct Answer
D. Water pollution
Explanation
Water pollution is the most common form of pollution because it affects a large portion of the Earth's surface. It occurs when harmful substances such as chemicals, toxins, and waste are discharged into bodies of water, including rivers, lakes, and oceans. Water pollution can have detrimental effects on aquatic ecosystems, leading to the destruction of habitats and the loss of biodiversity. It also poses a serious threat to human health as contaminated water can cause diseases and illnesses. Additionally, water pollution can have long-lasting impacts on the environment, making it a significant concern worldwide.
2.
When was the burning of sea-coal banned in England?
Correct Answer
C. 1272
Explanation
The burning of sea-coal was banned in England in 1272.
3.
Which of these was the first American city to enact laws against air pollution?
Correct Answer
A. Chicago
Explanation
Chicago was the first American city to enact laws against air pollution. This means that Chicago was the first city to introduce regulations and measures to control and reduce air pollution within its boundaries. The other cities listed, Miami, New York, and San Francisco, may have also enacted laws against air pollution at some point, but Chicago was the first to do so.
4.
What form of pollution involves the release of chemicals into the atmosphere?
Correct Answer
B. Air pollution
Explanation
Air pollution involves the release of chemicals into the atmosphere, which can be harmful to human health and the environment. These chemicals can come from various sources such as industrial emissions, vehicle exhaust, and burning of fossil fuels. Air pollution can lead to respiratory problems, cardiovascular diseases, and climate change. It is a significant environmental issue that requires attention and measures to reduce emissions and improve air quality.
5.
Which of these is not an effect of noise pollution?
Correct Answer
D. Coma
Explanation
Coma is not an effect of noise pollution. Noise pollution refers to excessive or disturbing noise that can have various negative effects on human health. These effects include hearing loss, high blood pressure, and sleep disturbance. However, coma, which is a state of prolonged unconsciousness, is not directly caused by noise pollution.
6.
Which of these is not an effect of pollution?
Correct Answer
B. SulpHur dioxide emission
Explanation
Sulphur dioxide emission is not an effect of pollution. Pollution can have various effects on the environment and human health, such as biomagnification (the accumulation of pollutants in higher levels of the food chain), acid rain (caused by pollutants reacting with the atmosphere), and carbon dioxide emission (a greenhouse gas contributing to climate change). However, sulphur dioxide emission itself is a form of pollution, as it is released into the air from burning fossil fuels and can contribute to air pollution and respiratory issues.
7.
Which of these can not help in managing pollution?
Correct Answer
D. Composting
Explanation
Composting involves the decomposition of organic waste materials, such as food scraps and yard trimmings, into nutrient-rich compost. While composting is a beneficial practice for reducing waste and improving soil health, it does not directly address the issue of pollution management. Recycling, reusing, and mitigating (taking actions to reduce or prevent pollution) are more effective strategies for managing pollution. Therefore, composting is the option that cannot help in managing pollution.
8.
Which of these is an air pollution device?
Correct Answer
C. Electrostatic precipitators
Explanation
All the options listed are devices used to control air pollution by removing particulates or gases from industrial emissions. Here’s a brief description of each:
Baghouses: Also known as fabric filters, these devices use fabric bags to capture dust and particulate matter from industrial emissions.
Cyclones: Also known as cyclone separators, these devices use a cyclonic, centrifugal force to remove large particles from gas streams.
Electrostatic precipitators: These devices use an electric charge to remove particles from gas streams. Particles are charged and then collected on plates with an opposite charge.
Thermal oxidizer: This device is used to destroy hazardous gases and volatile organic compounds (VOCs) by oxidizing them at high temperatures.
9.
Which of these is not a dust collection device?
Correct Answer
C. Spray tower
Explanation
A spray tower is not a dust collection device. It is a type of air pollution control equipment used for removing pollutants, such as gases and particulate matter, from industrial exhaust gases. Spray towers work by spraying a liquid, typically water, into the exhaust gas stream, causing the pollutants to dissolve or adhere to the liquid droplets. This process is known as absorption or scrubbing. In contrast, electrostatic precipitators, cyclones, and baghouses are all dust collection devices that are designed to remove solid particulate matter from the gas stream by different mechanisms.
10.
Which of these is primary sewage treatment?
Correct Answer
B. Sedimentation
Explanation
Sedimentation is considered to be a primary sewage treatment method. It involves the settling of solid particles in wastewater by allowing them to settle at the bottom of a tank or basin. This process helps in the removal of larger particles and suspended solids from the wastewater, making it cleaner and reducing the organic content. Sedimentation is an important step in the initial treatment of sewage before it undergoes further treatment processes.