Class 5 Exam  >  Class 5 Tests  >  Science Class 5  >  Test: Our Environment & Natural Calamities - 1 - Class 5 MCQ

Test: Our Environment & Natural Calamities - 1 - Class 5 MCQ


Test Description

20 Questions MCQ Test Science Class 5 - Test: Our Environment & Natural Calamities - 1

Test: Our Environment & Natural Calamities - 1 for Class 5 2024 is part of Science Class 5 preparation. The Test: Our Environment & Natural Calamities - 1 questions and answers have been prepared according to the Class 5 exam syllabus.The Test: Our Environment & Natural Calamities - 1 MCQs are made for Class 5 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: Our Environment & Natural Calamities - 1 below.
Solutions of Test: Our Environment & Natural Calamities - 1 questions in English are available as part of our Science Class 5 for Class 5 & Test: Our Environment & Natural Calamities - 1 solutions in Hindi for Science Class 5 course. Download more important topics, notes, lectures and mock test series for Class 5 Exam by signing up for free. Attempt Test: Our Environment & Natural Calamities - 1 | 20 questions in 20 minutes | Mock test for Class 5 preparation | Free important questions MCQ to study Science Class 5 for Class 5 Exam | Download free PDF with solutions
Test: Our Environment & Natural Calamities - 1 - Question 1

____ is a colourless and odourless gas which is used in making light bulbs.

Detailed Solution for Test: Our Environment & Natural Calamities - 1 - Question 1

The colourless and odourless gas used in making light bulbs is argon. Here is a detailed explanation:
1. Introduction:
- The question asks for a gas that is colourless and odourless and is used in making light bulbs.
- We need to identify the correct gas from the given options.
2. Analysis of options:
Let's analyze each option to determine the correct answer:
A: Air:
- Air is a mixture of gases that includes oxygen, nitrogen, carbon dioxide, and other gases.
- While oxygen is present in air, it is not specifically used in making light bulbs.
- Therefore, air is not the correct answer.
B: Oxygen:
- Oxygen is a gas that is essential for combustion and respiration.
- However, it is not commonly used in making light bulbs.
- Therefore, oxygen is not the correct answer.
C: Argon:
- Argon is a noble gas that is colourless, odourless, and non-reactive.
- It is commonly used in incandescent light bulbs to prevent the filament from oxidizing and burning out.
- Therefore, argon is the correct answer.
D: Hydrogen:
- Hydrogen is a highly flammable gas that is not commonly used in light bulbs.
- Therefore, hydrogen is not the correct answer.
E: None of these:
- This option can be eliminated as we have identified argon as the correct answer.
3. Conclusion:
Based on our analysis, the correct answer is argon. It is a colourless and odourless gas commonly used in making light bulbs to prevent the filament from burning out.
Test: Our Environment & Natural Calamities - 1 - Question 2

Which among the following is not a layer of the atmosphere?

Detailed Solution for Test: Our Environment & Natural Calamities - 1 - Question 2
Answer:
The correct answer is B: Lithosphere. The lithosphere is not a layer of the atmosphere.
Explanation:
The atmosphere is divided into several layers based on temperature changes and composition. The layers of the atmosphere, in order from closest to the Earth to farthest away, are:
1. Troposphere: This is the lowest layer of the atmosphere, where weather occurs and where most of the Earth's air mass is found.
2. Stratosphere: Above the troposphere, the stratosphere contains the ozone layer, which absorbs and protects against harmful ultraviolet radiation from the Sun.
3. Mesosphere: The mesosphere is the third layer of the atmosphere and is characterized by decreasing temperatures with altitude.
4. Thermosphere: The thermosphere is the second highest layer of the atmosphere and is where the northern and southern lights occur. It is also the layer where satellites orbit the Earth.
5. Exosphere: The outermost layer of the atmosphere, the exosphere gradually fades into space. It is composed mainly of extremely low-density hydrogen and helium atoms.
Lithosphere, on the other hand, refers to the rigid outer part of the Earth, including the crust and upper mantle. It is not a part of the atmosphere.
Therefore, the correct answer is B: Lithosphere.
1 Crore+ students have signed up on EduRev. Have you? Download the App
Test: Our Environment & Natural Calamities - 1 - Question 3

In which layer of atmosphere most of the ozone is present, which protects us from harmful UV radiations of sun?

Detailed Solution for Test: Our Environment & Natural Calamities - 1 - Question 3
The ozone layer is present in the stratosphere. It protects us from harmful UV radiations of the sun.
- The ozone layer is a region of the Earth's stratosphere that contains a high concentration of ozone (O3) molecules.
- It is located approximately 10 to 50 kilometers above the Earth's surface.
- The ozone layer plays a crucial role in protecting life on Earth by absorbing the majority of the Sun's ultraviolet (UV) radiation.
- UV radiation can be harmful to living organisms, causing skin cancer, cataracts, and other health issues.
- Ozone molecules in the stratosphere absorb and scatter the UV radiation, preventing it from reaching the Earth's surface in high amounts.
- The ozone layer is particularly effective in absorbing UV-B and UV-C radiation, which are the most harmful types of UV radiation.
- The concentration of ozone is highest in the upper portion of the stratosphere, known as the ozone layer.
- The ozone layer is not evenly distributed throughout the stratosphere, with the highest concentrations occurring between 20 and 30 kilometers above the Earth's surface.
- Human activities, such as the release of chlorofluorocarbons (CFCs), have led to the depletion of the ozone layer, particularly in the polar regions.
- This depletion has resulted in the formation of the ozone hole, which allows more UV radiation to reach the Earth's surface in those areas.
- Efforts have been made to reduce the production and use of ozone-depleting substances, leading to a gradual recovery of the ozone layer in recent years.
Test: Our Environment & Natural Calamities - 1 - Question 4

Which among the following is not a property of air?

Detailed Solution for Test: Our Environment & Natural Calamities - 1 - Question 4
Explanation:
To determine which property of air is not correct, let's examine each option:
A: Air exerts pressure: This is true. Air molecules exert pressure on the objects they come into contact with.
B: Air has weight: This is also true. Air is made up of molecules, which have mass and therefore, weight.
C: Air is biotic component of environment: This statement is not correct. Air is not a biotic component of the environment. Biotic components refer to living organisms such as plants, animals, and microorganisms. Air is composed of non-living gases like nitrogen, oxygen, carbon dioxide, and others.
D: Air occupies space: This is true. Air molecules occupy space and can fill containers.
Therefore, the correct answer is C: Air is biotic component of environment because it is the only option that is not a property of air.
Test: Our Environment & Natural Calamities - 1 - Question 5

___ holds the layer of air around the earth.

Detailed Solution for Test: Our Environment & Natural Calamities - 1 - Question 5
Explanation:
The correct answer is C: Gravity.
Gravity is the force that holds the layer of air around the Earth. Here is a detailed explanation:
- Gravity is the force of attraction between objects with mass. It is responsible for keeping everything on the surface of the Earth, including the atmosphere.
- The Earth's gravitational force pulls all objects towards its center. This force also acts on the air molecules in the atmosphere, pulling them towards the Earth.
- The Earth's gravity is strong enough to hold the air molecules close to the surface. This creates a layer of air around the Earth, known as the atmosphere.
- The atmosphere is composed of different layers, such as the troposphere, stratosphere, mesosphere, thermosphere, and exosphere. These layers are all held in place by the gravitational force of the Earth.
- Without gravity, the air molecules in the atmosphere would disperse into space, and there would be no atmosphere to breathe or protect us from harmful radiation from the Sun.
- Other options like friction, electricity, and ultraviolet rays do not hold the layer of air around the Earth. Friction is a force that opposes motion, electricity is a form of energy, and ultraviolet rays are a type of electromagnetic radiation. While they may interact with the atmosphere, they do not hold it in place.
In conclusion, gravity is the force that holds the layer of air around the Earth.
Test: Our Environment & Natural Calamities - 1 - Question 6

Which among the following is not a process of removing insoluble impurities from water?

Detailed Solution for Test: Our Environment & Natural Calamities - 1 - Question 6
Process of removing insoluble impurities from water
The correct answer is E: None of these. None of the given options are processes for removing insoluble impurities from water.

A: Filtration


- Filtration is a process of separating solid particles from a liquid or gas by passing it through a porous medium.
- It is commonly used to remove suspended solids, sediments, and large particles from water.

B: Sedimentation


- Sedimentation is the process of allowing suspended particles to settle down under the influence of gravity.
- It is commonly used to remove heavy particles and settleable solids from water.

C: Evaporation


- Evaporation is a process of converting liquid into vapor by heating or exposing it to air.
- It is not a method for removing insoluble impurities from water.

D: Decantation


- Decantation is the process of separating liquid from insoluble solid particles by pouring off the liquid without disturbing the settled particles.
- It is commonly used to separate a clear liquid from settled solids.

E: None of these


- This option indicates that none of the given processes are suitable for removing insoluble impurities from water.
Therefore, the correct answer is E: None of these.
Test: Our Environment & Natural Calamities - 1 - Question 7

A process, in which alum is added to muddy water to separate suspended din particles.

Detailed Solution for Test: Our Environment & Natural Calamities - 1 - Question 7

The process described in the question involves adding alum to muddy water to separate suspended dirt particles. Let's break down the process and identify the correct answer.
Loading:
- Loading refers to the act of adding a substance to another substance or system.
- In this process, alum (a substance) is added to muddy water (another substance).
- Therefore, the loading process is involved in this scenario.
Unloading:
- Unloading refers to the act of removing or separating a substance from another substance or system.
- There is no mention of removing or separating any substance in the given process.
- Hence, the unloading process is not involved in this scenario.
Evaporation:
- Evaporation refers to the process of converting a liquid into vapor by heating or exposing it to air.
- There is no mention of heating or exposing the muddy water to air in the given process.
- Therefore, the evaporation process is not involved in this scenario.
Filtration:
- Filtration refers to the process of passing a mixture through a filter to separate solid particles from a liquid.
- The process described in the question involves adding alum to muddy water to separate suspended dirt particles.
- This separation of dirt particles from water is achieved through the process of filtration.
- Hence, the filtration process is involved in this scenario.
None of these:
- This option is not applicable as we have identified that the process involves loading and filtration.
Therefore, the correct answer is b. Loading, as alum is added to muddy water to separate suspended dirt particles.
Test: Our Environment & Natural Calamities - 1 - Question 8

Crystals are used to kill germs present in water.

Detailed Solution for Test: Our Environment & Natural Calamities - 1 - Question 8
Crystals used to kill germs present in water:
Potassium permanganate (Answer: B)
Potassium permanganate is a highly effective crystal compound that can be used to kill germs present in water. It is commonly used as a water disinfectant and has powerful antimicrobial properties. Here's why it is an appropriate answer:
1. Potency: Potassium permanganate crystals have strong oxidizing properties, making them effective in killing various types of germs, including bacteria, viruses, and fungi.
2. Water disinfection: When added to water, the crystals release manganese dioxide, which acts as a disinfectant by destroying harmful microorganisms.
3. Broad-spectrum action: Potassium permanganate has a broad-spectrum antimicrobial activity, meaning it can target and eliminate a wide range of pathogens.
4. Ease of use: The crystals can be easily dissolved in water, making it convenient for water treatment purposes. The dosage can be adjusted according to the level of contamination.
5. Availability: Potassium permanganate crystals are readily available in the market and are commonly used in water treatment processes, especially in emergency situations or areas with limited access to clean water.
Therefore, the correct answer to the question is option B: Potassium permanganate.
Test: Our Environment & Natural Calamities - 1 - Question 9

Name the process in which clean water is poured into another container without disturbing the sediments.

Detailed Solution for Test: Our Environment & Natural Calamities - 1 - Question 9
Decantation:
Decantation is the process of separating a liquid from a solid by carefully pouring the liquid into another container without disturbing the sediments or solid particles present in the original container. It is commonly used to separate mixtures in which the solid particles settle at the bottom of the container.
Here is a detailed explanation of the decantation process:
1. Settling: Allow the mixture to stand undisturbed for some time, allowing the solid particles to settle at the bottom of the container.
2. Container Selection: Choose a container with a narrow neck or a container with a spout that will allow for a controlled pouring of the liquid.
3. Pouring: Gently and carefully pour the liquid into the new container, ensuring that the solid sediment remains undisturbed.
4. Leave Sediments: Stop pouring when you reach the level where the sediment begins. The sediment should be left behind in the original container.
5. Collection: The decanted liquid can now be collected in the new container, free from the solid particles.
6. Repeat if necessary: If the liquid still contains some impurities or sediments, the decantation process can be repeated multiple times to achieve a purer liquid.
Advantages of Decantation:
- It is a simple and cost-effective method of separating mixtures.
- It does not require any specialized equipment or chemicals.
- It can be used for a wide range of mixtures.
Disadvantages of Decantation:
- It may not be effective for mixtures with very fine particles that do not settle easily.
- It may result in some loss of the liquid during the transfer process.
- It may not completely remove all impurities from the liquid.
Overall, decantation is a useful technique for separating liquids from sediments or solid particles. It is commonly used in various industries and in everyday life for tasks such as separating oil from water, separating wine from sediment, or separating particulate matter from liquids in laboratories.
Test: Our Environment & Natural Calamities - 1 - Question 10

Which among the following is incorrect for the nitrogen gas?

Detailed Solution for Test: Our Environment & Natural Calamities - 1 - Question 10
Incorrect Statement for Nitrogen Gas:

  • A: Nitrogen constitutes about 78% of air.

  • B: Nitrogen is used in fertilizers.

  • C: Nitrogen is used in burning process. [Incorrect]

  • D: Nitrogen is used by plants with the help of bacteria.

  • E: None of these


Explanation:
Nitrogen gas is a vital component of the Earth's atmosphere and has various important applications. Let's examine each statement to identify the incorrect one:
A: Nitrogen constitutes about 78% of air.
This statement is correct. Nitrogen gas makes up approximately 78% of the Earth's atmosphere.
B: Nitrogen is used in fertilizers.
This statement is correct. Nitrogen is an essential nutrient for plant growth, and it is commonly used in fertilizers to enhance crop productivity.
C: Nitrogen is used in burning process. [Incorrect]
This statement is incorrect. Nitrogen is not directly involved in the burning process. It is an inert gas and does not support combustion.
D: Nitrogen is used by plants with the help of bacteria.
This statement is correct. Certain bacteria, known as nitrogen-fixing bacteria, convert atmospheric nitrogen into a usable form for plants, facilitating their growth.
E: None of these
This option is not applicable as there is an incorrect statement, which is statement C.
To summarize, the incorrect statement for nitrogen gas is C - "Nitrogen is used in the burning process."
Test: Our Environment & Natural Calamities - 1 - Question 11

Humidity means amount of ____ in the air.

Detailed Solution for Test: Our Environment & Natural Calamities - 1 - Question 11
Explanation:
- Humidity refers to the amount of water vapor present in the air.
- Water vapor is the gaseous form of water, and it is invisible to the naked eye.
- Humidity is an important factor in weather patterns and can affect how we perceive temperature.
- When the air is humid, it can feel hotter because our bodies have a harder time cooling down through the process of evaporation.
- Humidity can also affect the formation of clouds, precipitation, and the overall climate of a region.
- Other terms such as snow, hail, and clouds are related to different forms of water in the atmosphere, but they are not the same as humidity.
- Therefore, the correct answer is C: Water vapor.
Test: Our Environment & Natural Calamities - 1 - Question 12

Which among the following involves chemical treatment for water purification?

Detailed Solution for Test: Our Environment & Natural Calamities - 1 - Question 12
Chemical Treatment for Water Purification

In water purification, chemical treatment is often used to remove contaminants and make the water safe for consumption. Among the options given, chlorination is the method that involves chemical treatment.


Chlorination

Chlorination is a process in which chlorine or chlorine compounds are added to the water to disinfect it and kill microorganisms such as bacteria and viruses. This chemical treatment method has been widely used for many years and is effective in preventing the spread of waterborne diseases.


Chlorine can be added to the water in different forms:



  • Chlorine gas

  • Sodium hypochlorite (liquid bleach)

  • Calcium hypochlorite (solid or powder)


The chlorine reacts with microorganisms in the water, disrupting their cellular function and killing them. It also helps to remove odors and improve the taste of the water. However, it is important to use the appropriate dosage of chlorine to ensure effective disinfection without causing harm to human health.


Other Methods


The other options given in the question, sedimentation, decantation, and filtration, do not involve chemical treatment. They are physical processes used to separate solid particles from water.


Sedimentation is the process of allowing suspended particles to settle at the bottom of a container, while decantation is the pouring off of the clear water above the settled particles. Filtration is the passing of water through a porous material to remove solid impurities.


Therefore, the correct answer is D: Chlorination.

Test: Our Environment & Natural Calamities - 1 - Question 13

Name the low-lying areas that is filled by solid waste material.

Detailed Solution for Test: Our Environment & Natural Calamities - 1 - Question 13
Low-lying areas filled by solid waste material:
Below are some low-lying areas that are commonly used for the disposal of solid waste:
1. Sanitary landfill: A sanitary landfill is a designated area where solid waste is deposited and covered with layers of soil. It is designed to prevent the contamination of groundwater and other environmental hazards.
2. Compost pit: A compost pit is an area where organic waste materials, such as food scraps and yard waste, are decomposed and converted into compost. This process helps in recycling organic waste and reducing the amount of waste sent to landfills.
3. Biogas plant: Although not specifically a low-lying area, a biogas plant is a facility where organic waste is processed in an anaerobic digester. The waste material is broken down by bacteria, producing biogas, which can be used as a renewable energy source.
4. None of these: This option is incorrect as there are low-lying areas specifically designed for the disposal of solid waste, such as sanitary landfills and compost pits.
Therefore, the correct answer is option C: Sanitary landfill.
Test: Our Environment & Natural Calamities - 1 - Question 14

Which among the following is a green house gas?

Detailed Solution for Test: Our Environment & Natural Calamities - 1 - Question 14
Greenhouse Gases:
- Greenhouse gases are gases that trap heat in the Earth's atmosphere, contributing to the greenhouse effect.
- They play a significant role in climate change and global warming.
Options:
A: Carbon dioxide
- Carbon dioxide (CO2) is a greenhouse gas that is released through human activities such as burning fossil fuels, deforestation, and industrial processes.
- It is the primary greenhouse gas responsible for the current rise in global temperatures.
B: Nitrous oxide
- Nitrous oxide (N2O) is another greenhouse gas that is released through agricultural and industrial activities.
- It is also a byproduct of burning fossil fuels and solid waste.
C: Methane
- Methane (CH4) is a potent greenhouse gas that is released through natural processes such as the decay of organic matter in wetlands and the digestive processes of animals.
- It is also released through human activities such as the production and transport of coal, oil, and natural gas.
D: All the above
- All three options, carbon dioxide, nitrous oxide, and methane, are greenhouse gases.
- They contribute to the greenhouse effect and are responsible for climate change and global warming.
E: None of these
- This option is not correct as all three options (A, B, and C) are greenhouse gases.
Conclusion:
- The correct answer is D: All the above.
- Carbon dioxide, nitrous oxide, and methane are all greenhouse gases that contribute to climate change and global warming.
Test: Our Environment & Natural Calamities - 1 - Question 15

IS, Bronchitis is caused by;

Detailed Solution for Test: Our Environment & Natural Calamities - 1 - Question 15
IS, Bronchitis is caused by:
There are several causes of bronchitis, but it is primarily caused by viral or bacterial infections. Here are the details:
Viral Infections:
- Most cases of bronchitis are caused by viral infections, such as the common cold or influenza.
- Viruses that commonly cause bronchitis include rhinovirus, influenza virus, adenovirus, and respiratory syncytial virus (RSV).
Bacterial Infections:
- Bacterial infections can also cause bronchitis, although they are less common than viral infections.
- The most common bacteria that cause bronchitis are Streptococcus pneumoniae, Haemophilus influenzae, and Moraxella catarrhalis.
Other Causes:
- In addition to viral and bacterial infections, bronchitis can also be caused by other factors, such as:
- Smoking or exposure to secondhand smoke
- Air pollution, including pollutants and irritants in the air
- Occupational exposure to dust, fumes, or chemicals
- Allergies
- Gastroesophageal reflux disease (GERD)
- Weakened immune system
Conclusion:
While air pollution can contribute to the development or exacerbation of bronchitis, it is not the sole cause. Viral and bacterial infections are the primary culprits, but other factors can also play a role. It is important to identify and address these causes to effectively manage and treat bronchitis.
Test: Our Environment & Natural Calamities - 1 - Question 16

____ is used in refrigerators, air conditioners and in many other industrial processes.

Detailed Solution for Test: Our Environment & Natural Calamities - 1 - Question 16
Answer:
The correct answer is C: Chlorofluorocarbon.
Explanation:
Chlorofluorocarbons (CFCs) are a type of synthetic organic compounds that contain carbon, chlorine, and fluorine atoms. They have been widely used in refrigeration, air conditioning, and industrial processes for many years. Here is a detailed explanation:
- Refrigerators: CFCs were commonly used as refrigerants in older refrigerators. They have excellent cooling properties and were able to provide efficient cooling for the refrigerator.
- Air conditioners: CFCs were also used as refrigerants in air conditioning systems. They were effective in absorbing heat from indoor air and releasing it to the outdoor environment, thereby cooling the indoor space.
- Industrial processes: CFCs were used in various industrial processes, such as in the production of foam insulation, aerosol propellants, and solvents. They were valued for their stability, non-flammability, and low toxicity.
However, it is important to note that the use of CFCs has significantly decreased in recent years due to their harmful effects on the ozone layer. CFCs are known to deplete the ozone layer, which protects the Earth from harmful ultraviolet (UV) radiation. In response to this environmental concern, the production and use of CFCs have been regulated and phased out in many countries.
In conclusion, CFCs have been widely used in refrigerators, air conditioners, and various industrial processes. However, their use has been phased out due to their harmful effects on the ozone layer.
Test: Our Environment & Natural Calamities - 1 - Question 17

Soluble impurities can be removed by which of the following processes?

Detailed Solution for Test: Our Environment & Natural Calamities - 1 - Question 17
Soluble impurities can be removed by which of the following processes?
A: Evaporation
- Evaporation is a process in which the solvent of a solution is evaporated, leaving behind the solute.
- Soluble impurities can be removed by evaporating the solvent, as the impurities are left behind.
B: Distillation
- Distillation is a process in which a liquid mixture is heated to create vapor and then condensed to separate the components based on their boiling points.
- Soluble impurities can be removed by distillation if the impurities have a different boiling point than the desired substance.
C: Filtration
- Filtration is a process in which a mixture is passed through a filter to separate solid particles from a liquid or gas.
- Soluble impurities can be removed by filtration if the impurities are in solid form and larger in size than the pores of the filter.
D: Both [a] and [b]
- Both evaporation and distillation can be used to remove soluble impurities, depending on the nature of the impurities and the desired substance.
E: None of these
- None of the above options are correct, as both evaporation and distillation can be used to remove soluble impurities.
In conclusion, the correct answer is option D: Both [a] and [b]. Soluble impurities can be removed by both evaporation and distillation, depending on the specific circumstances of the impurities and the desired substance.
Test: Our Environment & Natural Calamities - 1 - Question 18

Name the gas released by grass-eating animals as their waste product.

Detailed Solution for Test: Our Environment & Natural Calamities - 1 - Question 18
Gas released by grass-eating animals:
Grass-eating animals, such as cows, goats, and sheep, produce a specific gas as a waste product. The gas released by these animals is:
Methane
Explanation:
- Methane is a greenhouse gas that is produced during the process of enteric fermentation in the digestive system of grass-eating animals.
- Enteric fermentation refers to the breakdown of food in the rumen, a specialized digestive chamber in the stomach of these animals.
- The rumen contains bacteria and other microorganisms that help in the digestion of plant material, including grass.
- During this digestion process, methane is produced as a byproduct and is released through belching or flatulence.
- Methane is a potent greenhouse gas that contributes to climate change and global warming.
- The agricultural sector, particularly livestock production, is a significant source of methane emissions.
In summary, grass-eating animals release methane gas as their waste product through the process of enteric fermentation. Methane is a potent greenhouse gas that contributes to climate change.
Test: Our Environment & Natural Calamities - 1 - Question 19

Which among the following is caused by polluted water?

Detailed Solution for Test: Our Environment & Natural Calamities - 1 - Question 19
Causes of Water Pollution:
- Industrial waste: Discharge of untreated industrial waste into water bodies can lead to pollution.
- Agricultural activities: The use of fertilizers and pesticides in agriculture can contaminate water sources.
- Sewage and wastewater: Improper disposal of sewage and wastewater can pollute water bodies.
- Oil spills: Accidental or deliberate oil spills can contaminate water and harm aquatic life.
- Mining activities: Mining can release harmful chemicals and heavy metals into water sources.
- Landfill leakage: Improperly managed landfills can leak pollutants into groundwater.
- Atmospheric deposition: Air pollution can lead to the deposition of pollutants into water bodies through rain or snow.
Effects of Water Pollution:
- Cholera: Contaminated water can harbor the bacterium Vibrio cholerae, which causes cholera.
- Typhoid: The bacterium Salmonella typhi, which causes typhoid fever, can be transmitted through polluted water.
- Dysentery: Water pollution can lead to the spread of bacteria such as Shigella and Campylobacter, causing dysentery.
- Other waterborne diseases: Polluted water can also transmit diseases like hepatitis A, giardiasis, and cryptosporidiosis.
Conclusion:
Polluted water can cause various diseases, including cholera, typhoid, and dysentery. It is crucial to prevent water pollution through proper waste management and conservation practices to ensure the availability of clean and safe water for all.
Test: Our Environment & Natural Calamities - 1 - Question 20

Which among the following is an effect of global warming?

Detailed Solution for Test: Our Environment & Natural Calamities - 1 - Question 20
Effects of Global Warming:
There are several effects of global warming, and the correct answer is option D, which states that all the above choices are effects of global warming. Let's discuss each effect in detail:
Melting of polar ice caps:
- Rising global temperatures cause the polar ice caps to melt at an accelerated rate.
- This leads to the loss of ice mass and contributes to the rise in sea levels.
Rise in water levels of oceans:
- As the polar ice caps melt and add more water to the oceans, the sea levels rise.
- This rise in sea levels poses a threat to coastal areas and low-lying islands.
Flooding of places near the sea:
- The rise in sea levels increases the risk of flooding in coastal regions.
- Low-lying areas are particularly vulnerable to flooding as a result of global warming.
Therefore, all the effects mentioned (melting of polar ice caps, rise in water levels of oceans, and flooding of places near the sea) are consequences of global warming.
44 videos|204 docs|45 tests
Information about Test: Our Environment & Natural Calamities - 1 Page
In this test you can find the Exam questions for Test: Our Environment & Natural Calamities - 1 solved & explained in the simplest way possible. Besides giving Questions and answers for Test: Our Environment & Natural Calamities - 1, EduRev gives you an ample number of Online tests for practice

Up next

44 videos|204 docs|45 tests
Download as PDF

Up next