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Olympiad Test: Pollution Of Air And Water - 2 - Class 8 MCQ


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18 Questions MCQ Test - Olympiad Test: Pollution Of Air And Water - 2

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Olympiad Test: Pollution Of Air And Water - 2 - Question 1

CFCs are compounds used in

Detailed Solution for Olympiad Test: Pollution Of Air And Water - 2 - Question 1
CFCs are compounds used in:
- Refrigerators: CFCs (chlorofluorocarbons) were commonly used as refrigerants in older refrigerators before their harmful effects on the ozone layer were discovered.
- Air conditioners: CFCs were also used as refrigerants in air conditioning units.
- Aerosols: CFCs were used as propellants in aerosol products such as spray paints, deodorants, and hairsprays.
Therefore, the correct answer is all of these (option D). CFCs were widely used in refrigerators, air conditioners, and aerosol products until their production and use were restricted due to their contribution to ozone depletion.
Olympiad Test: Pollution Of Air And Water - 2 - Question 2

Other than CO2 which of these contribute towards the green house effect?

Detailed Solution for Olympiad Test: Pollution Of Air And Water - 2 - Question 2
Contributors to the Greenhouse Effect:
- Methane: Methane is a potent greenhouse gas that is released through various human activities, including agriculture, fossil fuel extraction, and waste management. It has a much higher global warming potential than carbon dioxide.
- Nitrous Oxide: Nitrous oxide is another greenhouse gas that is primarily released through agricultural and industrial activities. It is known for its ability to trap heat in the atmosphere and contribute to global warming.
- Water Vapor: Water vapor is the most abundant greenhouse gas in the Earth's atmosphere. While it is not directly influenced by human activities, it plays a significant role in amplifying the greenhouse effect. As the Earth warms due to other greenhouse gases, more water vapor is generated, leading to a positive feedback loop.
- All of these: These three gases, methane, nitrous oxide, and water vapor, all contribute to the greenhouse effect and global warming. They trap heat in the Earth's atmosphere, leading to an increase in average global temperatures.
Therefore, the correct answer is option D: all of these contribute towards the greenhouse effect.
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Olympiad Test: Pollution Of Air And Water - 2 - Question 3

Several countries have signed ______ protocol to reduce the emission of green house gases to conserve ozone layer from getting depleted in the atmosphere.

Detailed Solution for Olympiad Test: Pollution Of Air And Water - 2 - Question 3
Answer:
Introduction
Several countries have signed a protocol to reduce the emission of greenhouse gases and conserve the ozone layer. This protocol plays a crucial role in addressing climate change and protecting the environment.
Explanation
The correct answer is A: Kyoto. The Kyoto Protocol is an international agreement that was adopted in 1997 under the United Nations Framework Convention on Climate Change (UNFCCC). Here are the key details:
1. Kyoto Protocol:
- The Kyoto Protocol is named after the city of Kyoto, Japan, where it was initially negotiated.
- It came into force on February 16, 2005.
- The main goal of the Kyoto Protocol is to reduce greenhouse gas emissions to combat climate change.
- It sets binding emission reduction targets for developed countries, known as Annex I countries.
- The Protocol provides flexibility mechanisms such as emissions trading and the Clean Development Mechanism (CDM) to help countries meet their targets.
2. Ozone Layer Depletion:
- The ozone layer is a protective layer in the Earth's stratosphere that absorbs most of the sun's ultraviolet (UV) radiation.
- Ozone layer depletion refers to the thinning of this protective layer, primarily due to the release of certain chemicals, such as chlorofluorocarbons (CFCs), into the atmosphere.
- Depletion of the ozone layer can have harmful effects on human health, ecosystems, and climate.
3. International Cooperation:
- To address the issue of ozone layer depletion and its connection to climate change, international cooperation is essential.
- The Kyoto Protocol is one of the mechanisms through which countries come together to reduce greenhouse gas emissions and protect the ozone layer.
- By signing and implementing the Kyoto Protocol, countries commit to taking measures to reduce their greenhouse gas emissions and contribute to environmental sustainability.
Conclusion
The Kyoto Protocol is an international agreement that several countries have signed to reduce greenhouse gas emissions and conserve the ozone layer. It plays a significant role in addressing climate change and protecting the environment for future generations.
Olympiad Test: Pollution Of Air And Water - 2 - Question 4

Which one of these causes is not a man-made pollution?

Detailed Solution for Olympiad Test: Pollution Of Air And Water - 2 - Question 4

Introduction:
In this question, we are asked to identify the cause of pollution that is not man-made. We need to choose from the given options: A) combustion, B) industrialization, C) dust storm, and D) urbanization.
Detailed
To determine the cause of pollution that is not man-made, let's analyze each option:
A) Combustion: Combustion refers to the process of burning fossil fuels, which releases pollutants such as carbon dioxide, nitrogen oxides, and particulate matter into the atmosphere. This is a man-made activity, as it involves the use of machinery and vehicles that burn fossil fuels.
B) Industrialization: Industrialization refers to the development of industries and factories, which can lead to pollution through emissions of various pollutants, such as greenhouse gases, air pollutants, and toxic waste. This is also a man-made activity.
C) Dust Storm: Dust storms are natural phenomena that occur when strong winds lift and transport large amounts of dust particles from dry land surfaces into the atmosphere. These dust particles can contribute to air pollution, but the occurrence of dust storms itself is not man-made. Therefore, this is the correct answer, as it is the cause of pollution that is not man-made.
D) Urbanization: Urbanization refers to the growth and expansion of cities, which can lead to increased pollution due to factors such as increased energy consumption, transportation emissions, and waste production. This is a man-made activity.
Conclusion:
Among the given options, the cause of pollution that is not man-made is a dust storm (Option C). Dust storms occur naturally when strong winds lift and transport dust particles from dry land surfaces into the atmosphere.
Olympiad Test: Pollution Of Air And Water - 2 - Question 5

Which of the following are used in electric water filters to kill all the harmful micro-organisms present in tap water and make it absolutely safe for driving?  

Detailed Solution for Olympiad Test: Pollution Of Air And Water - 2 - Question 5

Ultraviolet radiations kill bacteria and viruses and are used in electric water filters to make water safe for drinking.

Olympiad Test: Pollution Of Air And Water - 2 - Question 6

Volcanic eruption is a natural cause of air pollution.

Detailed Solution for Olympiad Test: Pollution Of Air And Water - 2 - Question 6

Volcanic eruptions are a natural cause of air pollution.


When a volcano erupts, it releases various gases and fine particles into the atmosphere. These emissions can have significant impacts on air quality and can cause air pollution. Here is a detailed explanation:


1. Volcanic Gases:
- Volcanic eruptions release gases such as sulfur dioxide (SO2), carbon dioxide (CO2), hydrogen sulfide (H2S), and methane (CH4).
- These gases can react with sunlight, moisture, and other atmospheric constituents to form secondary pollutants such as sulfuric acid (H2SO4), sulfurous acid (H2SO3), and volcanic smog (vog).
- Vog is a mixture of sulfur dioxide and other aerosols, which can have harmful effects on human health and the environment.
2. Volcanic Ash and Particles:
- Volcanic eruptions also release large amounts of ash and fine particles into the atmosphere.
- These particles can travel long distances and cause respiratory problems when inhaled.
- Additionally, volcanic ash can damage agricultural crops, disrupt transportation systems, and impact visibility.
3. Impact on Climate:
- Volcanic eruptions can inject large quantities of gases and particles into the stratosphere, which can have a cooling effect on the Earth's climate.
- Sulfur dioxide, when converted into sulfate aerosols, can reflect sunlight back into space, leading to a temporary decrease in global temperatures.
Conclusion:
- Volcanic eruptions are a natural cause of air pollution due to the release of gases, ash, and fine particles into the atmosphere.
- These emissions can have adverse effects on air quality, human health, agriculture, and climate.
- Therefore, option B is correct, stating that volcanic eruptions are a natural cause of air pollution.
Olympiad Test: Pollution Of Air And Water - 2 - Question 7

Global warming can be reduced by

Detailed Solution for Olympiad Test: Pollution Of Air And Water - 2 - Question 7

Global warming can be reduced by:
A: Minimizing the use of diesel and petrol as fuels:
- Diesel and petrol are fossil fuels that release greenhouse gases when burned, contributing to global warming.
- By reducing the use of these fuels, we can decrease the emissions of carbon dioxide and other greenhouse gases.
B: Maximizing the use of LPG, unleaded petrol, ethanol:
- LPG (liquefied petroleum gas), unleaded petrol, and ethanol are cleaner alternative fuels compared to diesel and petrol.
- These fuels produce fewer emissions and contribute less to global warming.
C: Planting more trees and stopping deforestation:
- Trees act as carbon sinks by absorbing carbon dioxide from the atmosphere through photosynthesis.
- By planting more trees, we can increase the absorption of carbon dioxide and reduce its concentration in the atmosphere.
- Deforestation, on the other hand, releases the stored carbon back into the atmosphere and reduces the capacity to absorb carbon dioxide.
D: All of these measures:
- By implementing all these measures together, we can effectively reduce global warming.
- Minimizing the use of diesel and petrol, maximizing the use of cleaner fuels, and planting more trees will collectively contribute to decreasing greenhouse gas emissions and mitigating the effects of global warming.
Therefore, the answer is d. All of these measures can help reduce global warming.
Olympiad Test: Pollution Of Air And Water - 2 - Question 8

Which of the following will reach the earth in greater amounts if the amount of chloroflouro carbons released into the air increases      

Detailed Solution for Olympiad Test: Pollution Of Air And Water - 2 - Question 8

Chlorofluorocarbons used in refrigerators, air conditioners and aerosol sprays are responsible to deplete the ozone layer in the atmosphere. Ozone layer protects us from harmful ultraviolet rays of the sun. 

Olympiad Test: Pollution Of Air And Water - 2 - Question 9

Which disease can be possible due to drinking of polluted water?

Detailed Solution for Olympiad Test: Pollution Of Air And Water - 2 - Question 9
Answer:
Drinking polluted water can lead to several diseases. Some of the diseases that can be caused by drinking polluted water include:
1. Cholera: Cholera is a bacterial infection that is caused by consuming water or food contaminated with the bacterium Vibrio cholerae. It can lead to severe diarrhea, vomiting, and dehydration.
2. Jaundice: Jaundice, also known as hepatitis A, is a viral infection that affects the liver. It is commonly transmitted through drinking water contaminated with the hepatitis A virus. Symptoms include yellowing of the skin and eyes, fatigue, and abdominal pain.
3. Typhoid: Typhoid fever is a bacterial infection caused by the bacterium Salmonella typhi. It is usually transmitted through contaminated water or food. Symptoms include high fever, headache, stomach pain, and loss of appetite.
4. Other Waterborne Diseases: In addition to cholera, jaundice, and typhoid, drinking polluted water can also lead to other waterborne diseases such as dysentery, giardiasis, and cryptosporidiosis. These diseases can cause symptoms like diarrhea, abdominal pain, and fever.
It is important to note that the quality of drinking water is crucial for maintaining good health. Access to clean and safe drinking water is essential to prevent these diseases. Proper sanitation and water treatment methods are necessary to ensure the safety of drinking water.
Olympiad Test: Pollution Of Air And Water - 2 - Question 10

Corrosion of marble is also called

Detailed Solution for Olympiad Test: Pollution Of Air And Water - 2 - Question 10
Corrosion of marble is also called marble cancer.
- Marble corrosion: Corrosion refers to the gradual deterioration and damage of a material due to chemical reactions with its environment. In the case of marble, it can be caused by various factors such as exposure to acidic substances, pollutants, or environmental conditions.
- Marble cancer: The term "marble cancer" is often used to describe the corrosion of marble. This term emphasizes the destructive nature of the corrosion process, likening it to a disease that affects and eats away at the marble surface.
- Marble erosion: While erosion can be a general term for the wearing away of a material, it is not specifically used to describe the corrosion of marble. Erosion usually refers to the physical processes of abrasion, friction, or weathering that result in the gradual removal or loss of material.
- Marble disorder: The term "marble disorder" is not commonly used to describe the corrosion of marble. It does not accurately reflect the specific chemical and physical processes involved in the corrosion of marble.
- Marvelous: The term "marvelous" does not relate to the corrosion of marble. It means something is wonderful or extraordinary, but it is not a term used to describe the deterioration of marble.
In conclusion, the correct term to describe the corrosion of marble is "marble cancer." This term highlights the destructive nature of the corrosion process and its resemblance to a disease that affects the marble surface.
Olympiad Test: Pollution Of Air And Water - 2 - Question 11

Which of these gases is present in highest percentage in air?

Detailed Solution for Olympiad Test: Pollution Of Air And Water - 2 - Question 11

Introduction:
In order to determine the gas present in the highest percentage in the air, we need to analyze the composition of the Earth's atmosphere. The Earth's atmosphere is a mixture of various gases, each with different percentages.
Composition of Air:
The Earth's atmosphere is primarily composed of the following gases, listed in descending order of their percentage:
- Nitrogen: Nitrogen makes up approximately 78% of the Earth's atmosphere.
- Oxygen: Oxygen accounts for about 21% of the Earth's atmosphere.
- Argon: Argon constitutes around 0.93% of the Earth's atmosphere.
- Carbon Dioxide: Carbon dioxide makes up only about 0.04% of the Earth's atmosphere.
Conclusion:
Based on the composition of the Earth's atmosphere, it is evident that nitrogen is present in the highest percentage, making up approximately 78% of the air. Therefore, option A: nitrogen is the correct answer.
Olympiad Test: Pollution Of Air And Water - 2 - Question 12

Sculptures/monuments and buildings are destroyed by

Detailed Solution for Olympiad Test: Pollution Of Air And Water - 2 - Question 12
Explanation:
Acid rain is responsible for the destruction of sculptures/monuments and buildings. Here's a detailed explanation:
What is acid rain?
- Acid rain refers to rainwater that has become acidic due to the presence of pollutants in the atmosphere.
- The primary pollutants that contribute to acid rain are sulfur dioxide (SO2) and nitrogen oxides (NOx) released from industrial processes, vehicle emissions, and the burning of fossil fuels.
How does acid rain damage sculptures/monuments and buildings?
- Acid rain contains sulfuric acid and nitric acid, which can corrode and erode the materials used in the construction of sculptures, monuments, and buildings.
- The chemicals in acid rain react with the minerals present in the materials, causing them to weaken, crack, and eventually disintegrate over time.
- Stone structures, such as marble and limestone, are particularly vulnerable to acid rain damage, as the acids dissolve the calcium carbonate present in these materials.
Effects of acid rain on sculptures/monuments and buildings:
- Discoloration: Acid rain can cause discoloration and staining on the surfaces of sculptures, monuments, and buildings.
- Deterioration: The acids in acid rain can eat away at the surfaces of the materials, leading to the deterioration of the structures.
- Loss of detail: Acid rain can erode intricate details and features of sculptures and monuments, resulting in the loss of their artistic and historical value.
- Structural damage: Continuous exposure to acid rain can weaken the structural integrity of buildings, leading to cracks, crumbling, and eventual collapse.
Prevention and mitigation of acid rain damage:
- Reducing air pollution: Implementing measures to reduce the emissions of sulfur dioxide and nitrogen oxides can help prevent acid rain formation.
- Conservation and restoration: Regular maintenance, cleaning, and restoration efforts can help protect and preserve sculptures, monuments, and buildings from acid rain damage.
- Protective coatings: Applying protective coatings or sealants to the surfaces of structures can provide a barrier against acid rain and slow down the rate of corrosion.
- Using resistant materials: Choosing materials that are less susceptible to acid rain damage, such as granite or stainless steel, can help mitigate the effects of acid rain.
In conclusion, acid rain, caused by pollutants in the atmosphere, is responsible for the destruction of sculptures, monuments, and buildings. The acids in acid rain corrode and erode the materials used in construction, leading to discoloration, deterioration, loss of detail, and structural damage. Preventive measures such as reducing air pollution, conservation efforts, protective coatings, and using resistant materials can help mitigate acid rain damage.
Olympiad Test: Pollution Of Air And Water - 2 - Question 13

Biological pollution in water is caused by  

Detailed Solution for Olympiad Test: Pollution Of Air And Water - 2 - Question 13
Biological pollution in water is caused by domestic sewage and animal excreta. Here is a detailed explanation:
Causes of Biological Pollution in Water:
- Domestic Sewage: Wastewater generated from households, including toilets, sinks, and showers, contains various contaminants such as organic matter, bacteria, viruses, and parasites. When this sewage is discharged into water bodies without proper treatment, it can lead to biological pollution.
- Animal Excreta: Livestock farming, including dairy and poultry, produces a significant amount of waste in the form of animal excreta. If this waste is not managed properly and ends up in water bodies, it can introduce pathogens, nutrients, and organic matter, leading to biological pollution.
- Impact of Biological Pollution: Biological pollution can have severe consequences on aquatic ecosystems and public health. It can lead to the depletion of oxygen levels in water, known as eutrophication, which can result in the death of fish and other aquatic organisms. Pathogens present in sewage and animal excreta can also cause waterborne diseases in humans, such as cholera, dysentery, and hepatitis.
- Prevention and Mitigation: To prevent and mitigate biological pollution in water, it is essential to implement proper wastewater treatment systems for domestic sewage and animal waste. This includes the use of septic tanks, wastewater treatment plants, and manure management practices in livestock farming. Additionally, promoting awareness about the importance of proper waste disposal and encouraging sustainable practices can help reduce the impact of biological pollution on water bodies.
In conclusion, biological pollution in water is primarily caused by domestic sewage and animal excreta. Proper waste management and treatment systems are crucial in preventing and mitigating the negative impacts of biological pollution on aquatic ecosystems and human health.
Olympiad Test: Pollution Of Air And Water - 2 - Question 14

A substance used for disinfecting water is

Detailed Solution for Olympiad Test: Pollution Of Air And Water - 2 - Question 14
Potassium permanganate is a substance used for disinfecting water. Here's why:
- Disinfecting Water: Potassium permanganate is commonly used as a water disinfectant. It has strong oxidizing properties that help in killing bacteria, viruses, and other harmful microorganisms present in water.

- Oxidizing Agent: Potassium permanganate acts as an oxidizing agent, which means it can accept electrons from other substances and cause them to undergo oxidation. This property helps in breaking down organic matter and destroying pathogens in water.

- Broad-Spectrum Disinfection: Potassium permanganate is effective against a wide range of microorganisms, including bacteria, viruses, fungi, and parasites. It can help in preventing the spread of waterborne diseases.

- Simple Application: Potassium permanganate can be easily applied to water for disinfection. It is available in crystal or powder form, and a small amount can be dissolved in water to create a disinfecting solution.

- Safe to Use: When used in appropriate concentrations, potassium permanganate is considered safe for disinfecting water. However, it is important to follow recommended guidelines and not exceed the recommended dosage.

In conclusion, potassium permanganate is a substance commonly used for disinfecting water due to its strong oxidizing properties, broad-spectrum disinfection capabilities, and ease of application.
Olympiad Test: Pollution Of Air And Water - 2 - Question 15

The ozone layer in our atmosphere protects us from the harmful effects of ultra violet rays which can cause

Detailed Solution for Olympiad Test: Pollution Of Air And Water - 2 - Question 15
The Ozone Layer and its Protection from Harmful Effects
The ozone layer is a crucial component of our atmosphere that shields us from the harmful effects of ultraviolet (UV) rays. It acts as a protective barrier against these rays, which can have detrimental impacts on human health. The given options are:
A. Typhoid:
- UV rays are not directly associated with causing typhoid.
- The ozone layer does not play a role in protecting against this disease.
B. Skin Disease:
- UV rays can cause various skin diseases, including sunburn, skin cancer, and premature aging.
- The ozone layer absorbs a significant portion of the UV radiation, reducing its impact on our skin.
- Therefore, the ozone layer plays a crucial role in protecting us from skin diseases caused by UV exposure.
C. Night Blindness:
- Night blindness is primarily caused by vitamin A deficiency and certain eye conditions.
- UV rays do not directly contribute to night blindness.
- The ozone layer does not play a role in protecting against night blindness.
D. Deafness:
- UV rays are not associated with causing deafness.
- The ozone layer does not play a role in protecting against deafness.
Conclusion:
The correct answer is B. Skin Disease. The ozone layer in our atmosphere acts as a protective shield against harmful UV rays, reducing the risk of various skin diseases caused by UV exposure.
Olympiad Test: Pollution Of Air And Water - 2 - Question 16

Which of these are causes of air pollution?

Detailed Solution for Olympiad Test: Pollution Of Air And Water - 2 - Question 16
Causes of air pollution:


There are several causes of air pollution, including:


Mining activities:
- Mining activities, such as extracting minerals and coal, can release harmful pollutants into the air. These pollutants include sulfur dioxide, nitrogen oxide, and particulate matter, which can contribute to air pollution.
Plant spores:
- While plant spores themselves are not a direct cause of air pollution, they can indirectly contribute to it. When plant spores combine with other pollutants in the air, such as vehicle emissions or industrial pollutants, they can form secondary pollutants, such as ozone or particulate matter.
Volcanoes:
- Volcanic eruptions release a significant amount of pollutants into the atmosphere. These pollutants include sulfur dioxide, ash, and gases like carbon dioxide and nitrogen oxide. Volcanic eruptions can have short-term and long-term effects on air quality, depending on the scale of the eruption and the proximity to populated areas.
All of these:
- All of the options mentioned, including mining activities, plant spores, and volcanoes, can contribute to air pollution in different ways. While some causes may have a more significant impact than others, it is essential to consider the cumulative effect of all these factors on air quality.
In conclusion, air pollution can be caused by a variety of factors, including mining activities, plant spores, and volcanic eruptions. Understanding these causes can help in developing strategies to mitigate and reduce air pollution for the benefit of both human health and the environment.
Olympiad Test: Pollution Of Air And Water - 2 - Question 17

Which of these metals is/are found generally in the contaminated water bodies?

Detailed Solution for Olympiad Test: Pollution Of Air And Water - 2 - Question 17
Contaminated Water Bodies and Metals:
- Arsenic and Lead: These metals are commonly found in contaminated water bodies.
- Cadmium: Cadmium is another metal that is often present in contaminated water.
- Mercury and Nickel: These metals can also be found in contaminated water sources.
- All of These: The answer is D, as all of the mentioned metals (arsenic, lead, cadmium, mercury, and nickel) are generally found in contaminated water bodies.
Explanation:
Contaminated water bodies can contain various metals that pose a risk to human health and the environment. Here is a detailed explanation of each metal mentioned:
- Arsenic: Arsenic is a naturally occurring element that can contaminate water sources through geological processes or human activities such as mining and industrial discharge. Long-term exposure to arsenic-contaminated water can lead to serious health problems, including skin lesions, cancer, and cardiovascular diseases.
- Lead: Lead contamination in water can occur due to corroded pipes, plumbing fixtures, or lead-based solder used in plumbing systems. Drinking water contaminated with lead can cause developmental issues in children, as well as kidney damage and high blood pressure in adults.
- Cadmium: Cadmium is a toxic metal that can enter water bodies through industrial waste, mining activities, or atmospheric deposition. Prolonged exposure to cadmium-contaminated water can lead to kidney damage, lung diseases, and various cancers.
- Mercury: Mercury can contaminate water bodies through industrial processes, coal combustion, and natural sources. It can accumulate in fish and other aquatic organisms, posing a risk to human health when consumed. Mercury exposure can cause neurological and developmental problems, especially in fetuses and young children.
- Nickel: Nickel contamination in water can occur through industrial discharges, mining operations, or natural sources. Exposure to high levels of nickel in drinking water can lead to gastrointestinal issues, respiratory problems, and skin allergies.
In conclusion, all of these metals (arsenic, lead, cadmium, mercury, and nickel) are commonly found in contaminated water bodies and can have detrimental effects on human health and the environment.
Olympiad Test: Pollution Of Air And Water - 2 - Question 18

Chlorination of water is done

Detailed Solution for Olympiad Test: Pollution Of Air And Water - 2 - Question 18
Chlorination of water:
Chlorination is a common method used to treat water and make it safe for consumption. It involves adding chlorine or chlorine compounds to water in order to kill harmful microorganisms and make it safe for drinking. Here are the reasons why chlorination of water is done:
To kill all harmful microorganisms:
- Chlorine is a powerful disinfectant that effectively kills bacteria, viruses, and other harmful microorganisms present in water. It helps in preventing waterborne diseases such as cholera, typhoid, and dysentery.
To remove the odor of water:
- Chlorination helps in eliminating unpleasant odors caused by certain compounds present in water. It neutralizes the odor-causing substances and improves the smell of water.
To clean the impurities in water:
- Chlorine reacts with and removes various impurities and contaminants in water, including organic matter, algae, and certain chemicals. It helps in improving the overall quality of water by reducing turbidity and removing unwanted particles.
To make it tasty:
- Although taste is not the primary reason for chlorination, it can contribute to making the water taste better. Chlorine can help in reducing the presence of certain compounds that give water an unpleasant taste or odor.
Overall, chlorination of water is primarily done to ensure its safety by killing harmful microorganisms and reducing the risk of waterborne diseases. It also helps in improving the quality and taste of water, making it more suitable for consumption.
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