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Class 6 Exam  >  Class 6 Tests  >  Test: Water - Class 6 MCQ

Test: Water - Class 6 MCQ


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21 Questions MCQ Test - Test: Water

Test: Water for Class 6 2024 is part of Class 6 preparation. The Test: Water questions and answers have been prepared according to the Class 6 exam syllabus.The Test: Water MCQs are made for Class 6 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: Water below.
Solutions of Test: Water questions in English are available as part of our course for Class 6 & Test: Water solutions in Hindi for Class 6 course. Download more important topics, notes, lectures and mock test series for Class 6 Exam by signing up for free. Attempt Test: Water | 21 questions in 10 minutes | Mock test for Class 6 preparation | Free important questions MCQ to study for Class 6 Exam | Download free PDF with solutions
Test: Water - Question 1
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What percentage of the Earth's surface is covered with water, earning it the nickname "Blue Planet"?

Detailed Solution for Test: Water - Question 1
The Earth is often referred to as the "Blue Planet" because three-fourths, or 75%, of its surface is covered with water. This abundance of water gives our planet its distinctive blue appearance when viewed from space.
Test: Water - Question 2
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How much of the Earth's water is freshwater that is readily available for human use?

Detailed Solution for Test: Water - Question 2
Only 2.5% of all the water on Earth is freshwater, which is suitable for human consumption and use. This freshwater is essential for various activities such as drinking, agriculture, and industrial processes.
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Test: Water - Question 3
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What percentage of freshwater on Earth is frozen in polar regions?

Detailed Solution for Test: Water - Question 3
Approximately 1.5% of freshwater on Earth is frozen in polar regions, primarily in the form of ice sheets and glaciers. This frozen freshwater plays a crucial role in regulating global sea levels and supporting polar ecosystems.
Test: Water - Question 4
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How have human activities impacted the small percentage of remaining freshwater on Earth?
Detailed Solution for Test: Water - Question 4
Human activities have led to pollution of a small percentage of the remaining 1% of freshwater on Earth. Pollution from various sources such as industrial waste, agricultural runoff, and untreated sewage can contaminate freshwater sources, posing risks to aquatic ecosystems and human health.
Test: Water - Question 5
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Why is water essential for various daily activities in homes?
Detailed Solution for Test: Water - Question 5
Water is crucial for daily activities in homes such as cooking, drinking, and bathing. It is essential for hygiene, food preparation, and overall health maintenance. Without access to clean water, these daily tasks would become significantly more challenging and could pose health risks to individuals and communities.
Test: Water - Question 6
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In what way can using polluted water for irrigation impact crops and health in agriculture?
Detailed Solution for Test: Water - Question 6
The use of polluted water for irrigation in agriculture can have detrimental effects on crops and health. Polluted water may contain harmful chemicals, pathogens, or contaminants that can be absorbed by plants, affecting their growth and quality. Additionally, consuming crops grown with polluted water can pose health risks to consumers, highlighting the importance of using clean water for irrigation to ensure food safety and crop productivity.
Test: Water - Question 7
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How do large dams contribute to water management and energy production?
Detailed Solution for Test: Water - Question 7
Large dams play a crucial role in water management by storing river water, thus preventing it from flowing into oceans. This stored water can be used for various purposes such as irrigation, drinking water supply, flood control, and hydroelectric power generation.
Test: Water - Question 8
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Why is releasing untreated wastewater considered a punishable act in industries?
Detailed Solution for Test: Water - Question 8
Releasing untreated wastewater in industries is considered a punishable act primarily to prevent water pollution and protect the environment. Untreated wastewater can contain harmful substances that can contaminate water bodies, harm aquatic life, and pose risks to human health. By enforcing penalties for releasing untreated wastewater, authorities aim to deter industries from polluting water sources and encourage them to implement proper wastewater treatment measures to safeguard the environment and public health.
Test: Water - Question 9
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How is water utilized to produce electricity?
Detailed Solution for Test: Water - Question 9
Water is utilized to produce electricity through hydropower plants, where the energy of flowing water is used to turn turbines connected to generators. As the turbines spin, they convert the kinetic energy of water into mechanical energy, which is then transformed into electrical energy. Hydropower is a renewable and sustainable energy source that plays a significant role in generating electricity worldwide, contributing to energy security and reducing reliance on fossil fuels.
Test: Water - Question 10
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What is the primary function of hydroelectric power plants?
Detailed Solution for Test: Water - Question 10
Hydroelectric power plants utilize the force of flowing water to generate electricity. This is achieved by directing the flow of water to turn turbines connected to generators, converting the kinetic energy of water into electrical energy. Hydroelectric power is a renewable and clean energy source that contributes significantly to global electricity production.
Test: Water - Question 11
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In which state does water exist when it is in the form of ice and snow?
Detailed Solution for Test: Water - Question 11
Water exists in a solid state when it is in the form of ice and snow. The molecules in water slow down and come together in an orderly arrangement when water freezes, forming a solid structure. This state change occurs when water's temperature drops below 0 degrees Celsius.
Test: Water - Question 12
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What natural process involves evaporation, condensation, cloud formation, and precipitation?
Detailed Solution for Test: Water - Question 12
The natural process that involves evaporation, condensation, cloud formation, and precipitation is known as the water cycle. This continuous cycle plays a vital role in distributing water around the Earth, ensuring the availability of freshwater for various ecosystems and human activities.
Test: Water - Question 13
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How is groundwater primarily formed according to the information provided?
Detailed Solution for Test: Water - Question 13
Groundwater is primarily formed through the process of percolation, where rainwater seeps into the soil and collects underground. This forms reservoirs of freshwater beneath the surface, which can be accessed through wells. Groundwater plays a crucial role in providing clean drinking water to populations around the world.
Test: Water - Question 14
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Why are wells and lakes emphasized as vital sources of freshwater ?
Detailed Solution for Test: Water - Question 14

Wells and lakes are highlighted as essential sources of freshwater because they rely on rainfall for replenishment. Seasonal rainfall ensures that these water sources are filled, emphasizing the importance of precipitation for sustaining these vital water bodies. This reliance on rainfall underscores the significance of managing water resources effectively to ensure continued availability.

Test: Water - Question 15
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What does the water table represent in the context of groundwater?
Detailed Solution for Test: Water - Question 15
The water table represents the level at which groundwater is found beneath the ground surface. It indicates the depth at which the soil and rock are saturated with water. Understanding the water table is crucial for managing groundwater resources and accessing clean drinking water through wells and other groundwater sources.
Test: Water - Question 16
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Why is groundwater considered a crucial source of clean drinking water?
Detailed Solution for Test: Water - Question 16
Groundwater is regarded as a crucial source of clean drinking water because of its natural filtration process. As rainwater seeps through layers of soil and rock, impurities are filtered out, resulting in naturally purified water stored underground. This filtration process helps maintain the quality of groundwater, making it a reliable and essential source of clean drinking water for communities worldwide.
Test: Water - Question 17
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Why is water conservation considered essential, particularly with the increasing human population?
Detailed Solution for Test: Water - Question 17
Water conservation is essential to prevent the depletion of freshwater sources, especially with the increasing human population leading to freshwater scarcity. By conserving water, communities can sustainably manage their water resources, ensuring availability for current and future generations. This practice is crucial for mitigating water stress and promoting environmental sustainability.
Test: Water - Question 18
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What are structures built to impede the flow of rainwater?
Detailed Solution for Test: Water - Question 18
Structures built to impede the flow of rainwater are typically drainage systems. These systems are designed to manage rainwater by controlling its flow, preventing flooding, and facilitating the collection of water for various purposes. One interesting fact is that well-designed drainage systems not only help prevent water-related issues but also contribute to groundwater recharge and sustainable water management.
Test: Water - Question 19
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What is the primary function of a rain garden?
Detailed Solution for Test: Water - Question 19
The primary function of a rain garden is to filter pollutants from rainwater. Rain gardens are designed to capture rainwater runoff from impervious surfaces, allowing it to slowly infiltrate into the ground. As the water percolates through the soil in the rain garden, pollutants are removed, helping to improve water quality. An interesting fact is that rain gardens can also support biodiversity by providing habitats for various plant and animal species.
Test: Water - Question 20
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How does collecting rainwater contribute to increasing water availability?
Detailed Solution for Test: Water - Question 20
Collecting rainwater contributes to increasing water availability by storing rainwater for future use. Rainwater harvesting systems collect and store rainwater that can be used for various purposes such as irrigation, household chores, and even drinking water in some cases. This practice helps reduce the demand on traditional water sources like rivers and groundwater, thereby contributing to increased water availability. An interesting fact is that rainwater harvesting has been practiced for centuries in various cultures around the world.
Test: Water - Question 21
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Why is understanding the distribution, uses, and conservation of water crucial for ensuring a sustainable and sufficient water supply for all?
Detailed Solution for Test: Water - Question 21
Understanding the distribution, uses, and conservation of water is crucial for ensuring a sustainable and sufficient water supply for all to ensure equitable access to water resources. By managing water resources effectively, we can ensure that water is available for various needs, including drinking, agriculture, industry, and ecosystem support. This helps in promoting water security and reducing the risks of water scarcity, especially in regions where access to clean water is limited.
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Important Questions for Water

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Water MCQs with Answers

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