1.
Which of the following is not a greenhouse gas?
Correct Answer
A. Ammonia
Explanation
Ammonia is not considered a greenhouse gas because it does not have the ability to trap heat in the atmosphere like the other options listed. Greenhouse gases, such as nitrous oxide, methane, and carbon dioxide, have the property of absorbing and emitting infrared radiation, which leads to the greenhouse effect and contributes to global warming. Ammonia, on the other hand, is not a significant contributor to the greenhouse effect and is not classified as a greenhouse gas.
2.
The following are effects of global warming except
Correct Answer
B. Increased natural disasters
Explanation
Global warming refers to the long-term increase in Earth's average temperature, primarily caused by the release of greenhouse gases from human activities. It leads to various effects such as changing precipitation patterns, rising sea levels, and increasing global temperatures. However, increased natural disasters cannot be directly attributed to global warming. While climate change may influence the frequency and intensity of some extreme weather events, it is not the sole cause of natural disasters like earthquakes or volcanic eruptions. Therefore, increased natural disasters are not considered an effect of global warming.
3.
The following are remedies to global warming except?
Correct Answer
B. Increased activities on water bodies
Explanation
Increased activities on water bodies is not a remedy to global warming because it does not directly address the root causes or help to reduce greenhouse gas emissions. Climate engineering, adaptation to effects of global warming, and mitigation by emissions reductions are all strategies aimed at combating global warming. Climate engineering involves manipulating the Earth's climate system to counteract the effects of global warming. Adaptation involves adjusting to the changes caused by global warming. Mitigation focuses on reducing greenhouse gas emissions to prevent further warming of the planet.
4.
When was the concept of greenhouse effects proposed?
Correct Answer
B. 1824
Explanation
The concept of greenhouse effects was proposed in 1824.
5.
Which of these dies not contribute to global warming?
Correct Answer
A. Biofuels
Explanation
Biofuels do not contribute to global warming because they are derived from renewable sources such as plants and crops. When these fuels are burned, they release carbon dioxide, but since the plants used to make them absorb carbon dioxide during their growth, the overall carbon footprint is considered neutral. On the other hand, soot, fossil fuels, and black carbon all release greenhouse gases and contribute to global warming.
6.
All of the following are examples of visual pollution save except
Correct Answer
A. Presence of AlpHa emitters
Explanation
Visual pollution refers to the presence of man-made elements that are visually unappealing or disturbing in the environment. Examples of visual pollution include scarred landforms, presence of space debris, and presence of overhead power lines. However, the presence of Alpha emitters does not contribute to visual pollution as they are not visible to the naked eye. Alpha emitters are radioactive particles that can be harmful to human health, but they do not have a direct visual impact on the environment.
7.
What can be used in treatment of contaminated water?
Correct Answer
D. Chlorine
Explanation
Chlorine can be used in the treatment of contaminated water. Chlorine is a powerful disinfectant that can kill bacteria, viruses, and other harmful microorganisms present in water. It is commonly used in water treatment plants to ensure that the water is safe for consumption. Chlorine works by breaking down the cell walls of microorganisms, effectively killing them and making the water safe to drink. It is a widely used and effective method for water purification.
8.
These are the main factors that determine the severity of a pollutant except
Correct Answer
C. pHysical nature
Explanation
The severity of a pollutant is determined by factors such as persistence, chemistry, and concentration. Persistence refers to how long the pollutant remains in the environment, while chemistry refers to its chemical properties and reactions. Concentration refers to the amount of the pollutant present. However, the physical nature of the pollutant, such as its size or shape, does not directly determine its severity.
9.
Most air pollution is caused by _________
Correct Answer
C. Transport vehicles emmisions
Explanation
Transport vehicles emissions are a major contributor to air pollution. The burning of fossil fuels in cars, trucks, and other vehicles releases pollutants such as carbon monoxide, nitrogen oxides, and particulate matter into the air. These pollutants can have harmful effects on human health and the environment, leading to respiratory problems, smog formation, and climate change. Therefore, transport vehicles emissions are a significant source of air pollution.
10.
What country is the highest producer of carbon dioxide in 2007?
Correct Answer
B. China
Explanation
China is the correct answer because it was the highest producer of carbon dioxide in 2007. This is likely due to China's rapid industrialization and extensive use of coal for energy production during that time.