-
Water Resources Overview
- Water is essential for drinking, cooking, and industrial processes.
- Freshwater is limited despite the abundance of water on Earth.
- Water scarcity is predicted to affect nearly two billion people by 2025.
-
Causes of Water Scarcity
- Pollution from domestic and industrial waste.
- Over-exploitation of groundwater resources.
- Urbanization and industrialization increasing water demand.
-
Multi-Purpose River Projects
- Designed to manage water resources effectively.
- Serve multiple functions: irrigation, electricity generation, flood control.
- Example: Bhakra-Nangal project integrates hydropower and irrigation.
-
Rooftop Rainwater Harvesting
- Common in areas like Shillong, Meghalaya.
- Can provide significant water supply for households.
- Legal provisions in Tamil Nadu to enforce rooftop systems.
-
Historical Context
- Ancient hydraulic structures indicate long-standing water management practices.
- Dams have evolved from simple barriers to multi-purpose projects.
-
Current Initiatives
- Atal Jal aims to improve water supply in water-stressed areas.
- Focus on community behavior change towards water conservation.
Water Resources
Summary
Learning Objectives
- Understand the concept of water scarcity and its implications.
- Identify the causes of water scarcity in various regions.
- Explain the importance of water conservation and management.
- Discuss the advantages and disadvantages of multi-purpose river projects.
- Describe traditional and modern rainwater harvesting methods.
- Analyze the impact of industrialization and urbanization on water resources.
- Evaluate the effectiveness of government initiatives like the Jal Jeevan Mission and Atal Bhujal Yojana.
Detailed Notes
Water Resources
Overview
- Water is essential for drinking, cooking, washing, and industrial processes.
- Despite covering three-fourths of the Earth's surface, only a small proportion is freshwater.
- Water scarcity can occur even in regions with high rainfall due to pollution and mismanagement.
Water Scarcity
- Definition: Water scarcity refers to the lack of sufficient available water resources to meet the demands of water usage.
- Causes:
- Low rainfall and drought-prone areas.
- Pollution from domestic and industrial waste.
- Over-exploitation of groundwater resources.
Importance of Water Conservation
- Essential for ensuring food security and maintaining livelihoods.
- Prevents degradation of natural ecosystems.
- Government initiatives like the Jal Jeevan Mission aim to provide potable water to rural households.
Multi-Purpose River Projects
- Definition: Dams built for multiple uses such as irrigation, electricity generation, flood control, and recreation.
- Examples:
- Bhakra-Nangal project in the Sutluj-Beas river basin.
- Hirakud project in the Mahanadi basin.
Traditional Water Management Practices
- Rooftop Rainwater Harvesting:
- Common in regions like Shillong, Meghalaya, where households collect rainwater to meet their needs.
- In Gendathur, Karnataka, households have installed systems to collect rainwater, providing significant annual water supply.
Key Structures and Terms
- Dam: A barrier that obstructs or directs water flow, creating reservoirs.
- Spillway: A section of a dam that allows controlled water release.
- Reservoir: A large body of water stored behind a dam.
Historical Context
- Ancient India had sophisticated hydraulic structures for water management, including dams and irrigation systems.
- Modern India continues this tradition with large-scale dam projects aimed at integrated water resource management.
Exam Tips & Common Mistakes
Common Mistakes and Exam Tips
Common Pitfalls
- Misunderstanding Water Scarcity: Students often confuse regions with high rainfall but poor water quality as not suffering from water scarcity.
- Ignoring Multi-Purpose Projects' Disadvantages: Many overlook the significant social impacts, such as displacement and loss of livelihood, when discussing multi-purpose river projects.
- Incorrect Statements: Students may incorrectly state that urban lifestyles help in proper water resource utilization, ignoring the strain they place on water supplies.
Tips for Avoiding Mistakes
- Clarify Definitions: Ensure you understand the definitions of water scarcity and renewable resources. Water scarcity is not just about low rainfall but also includes pollution and overuse.
- Evaluate Arguments: When discussing multi-purpose projects, weigh both benefits and drawbacks. Remember to include social consequences in your analysis.
- Practice Rewriting: Regularly practice identifying and correcting false statements to improve your understanding and retention of concepts.
- Use Examples: When answering questions, use specific examples from your studies to illustrate your points clearly.
Practice & Assessment
Multiple Choice Questions
A.
Increased fish population
B.
Improved river sediment flow
C.
Fragmentation of rivers
D.
Enhanced natural habitats
Correct Answer: C
Solution:
Large dams and multi-purpose projects can fragment rivers, making it difficult for aquatic fauna to migrate.
A.
Citrate Synthase
B.
Aconitase
C.
Isocitrate Dehydrogenase
D.
Fumarase
Correct Answer: B
Solution:
Aconitase is the enzyme that catalyzes the conversion of citrate to isocitrate in the citric acid cycle.
A.
Water scarcity due to pollution
B.
Lack of water for irrigation
C.
Inability to generate hydel power
D.
Excessive groundwater recharge
Correct Answer: A
Solution:
Regions with high annual rainfall may still face water scarcity if the water is highly polluted.
A.
They help control floods by regulating water flow.
B.
They provide water to areas suffering from scarcity.
C.
They cause large scale displacements and loss of livelihood.
D.
They generate electricity for industries and homes.
Correct Answer: C
Solution:
While multi-purpose river projects have benefits like flood control and electricity generation, they can also cause large scale displacements, which is not a benefit.
A.
To expand irrigated areas for dry-season agriculture
B.
To reduce the cost of farming
C.
To increase the number of crops grown per year
D.
To prevent soil erosion
Correct Answer: A
Solution:
Water resources are being over-exploited to expand irrigated areas for dry-season agriculture to produce more food.
A.
Excessive water flow
B.
Poor sediment flow due to river regulation
C.
High evaporation rates
D.
Lack of aquatic life
Correct Answer: B
Solution:
The regulation and damming of rivers affect their natural flow, causing poor sediment flow and excessive sedimentation at the bottom of reservoirs.
A.
They help in controlling floods by regulating water flow.
B.
They generate electricity for industries and homes.
C.
They cause large-scale displacement and loss of livelihood.
D.
They bring water to areas suffering from water scarcity.
Correct Answer: C
Solution:
While multi-purpose river projects have many benefits, they also cause large-scale displacement and loss of livelihood, which is not a benefit.
A.
Increased fish population
B.
Improved natural sediment flow
C.
Fragmentation of rivers
D.
Decreased water pollution
Correct Answer: C
Solution:
Large dams often fragment rivers, making it difficult for aquatic fauna to migrate, especially for spawning.
A.
Citrate Synthase
B.
Aconitase
C.
Isocitrate Dehydrogenase
D.
Fumarase
Correct Answer: B
Solution:
Aconitase is the enzyme that catalyzes the isomerization of citrate to isocitrate in the citric acid cycle.
A.
Citrate
B.
Fumarate
C.
Glucose
D.
Oxaloacetate
Correct Answer: C
Solution:
Glucose is not a component of the citric acid cycle. The cycle includes compounds like citrate, fumarate, and oxaloacetate.
A.
High rainfall regions always have abundant water supply.
B.
Water scarcity is only due to low rainfall.
C.
Water pollution and poor management can lead to scarcity even in high rainfall regions.
D.
High population density always ensures efficient water use.
Correct Answer: C
Solution:
Regions with high annual rainfall can experience water scarcity due to pollution and poor management of water resources.
A.
Region with high annual rainfall and a large population.
B.
Region with high annual rainfall but water is highly polluted.
C.
Region with low rainfall and low population.
D.
Region with high annual rainfall and efficient water management.
Correct Answer: B
Solution:
Water scarcity can occur in regions with high annual rainfall if the water is highly polluted, making it unsuitable for use. Pollution reduces the availability of clean water, leading to scarcity.
A.
Increased biodiversity
B.
Soil salinisation
C.
Decrease in crop yield
D.
Reduction in water pollution
Correct Answer: B
Solution:
Irrigation can lead to soil salinisation, which is a significant ecological consequence.
A.
High annual rainfall
B.
Unequal access to water
C.
Low population density
D.
Abundance of water resources
Correct Answer: B
Solution:
In urban areas, water scarcity is often caused by unequal access to water among different social groups.
A.
Unequal distribution of freshwater resources.
B.
Lack of rainfall in all regions.
C.
Excessive evaporation of water bodies.
D.
High salinity of ocean water.
Correct Answer: A
Solution:
Water scarcity is primarily due to the unequal distribution of freshwater resources, as most of the earth's water is saline and not directly usable for most human needs.
A.
Over-exploitation of water resources
B.
High annual rainfall
C.
Presence of large lakes
D.
Abundance of groundwater
Correct Answer: A
Solution:
Water scarcity can occur due to over-exploitation of water resources, even in regions with ample water resources.
A.
It causes water scarcity
B.
It ensures water is a renewable resource
C.
It decreases water availability
D.
It increases water pollution
Correct Answer: B
Solution:
The hydrological cycle ensures that water is continually renewed and recharged, making it a renewable resource.
A.
They lead to large-scale displacement of people.
B.
They help in controlling floods effectively.
C.
They cause ecological disturbances.
D.
They can induce seismic activities.
Correct Answer: B
Solution:
While multi-purpose river projects can cause displacement, ecological disturbances, and even seismic activities, controlling floods effectively is often seen as an advantage, not a disadvantage.
A.
It ensures that water is a non-renewable resource.
B.
It involves the continuous movement of water within the earth and atmosphere.
C.
It only includes surface water and not groundwater.
D.
It is responsible for the scarcity of water in regions with high rainfall.
Correct Answer: B
Solution:
The hydrological cycle involves the continuous movement of water within the earth and atmosphere, making water a renewable resource.
A.
Water is highly polluted.
B.
Water is evenly distributed throughout the year.
C.
Water is used only for domestic purposes.
D.
Water is stored in large reservoirs.
Correct Answer: A
Solution:
A region can suffer from water scarcity if the water is highly polluted, even if there is high annual rainfall.
A.
Increased sediment flow downstream
B.
Improved habitats for aquatic life
C.
Fragmentation of rivers affecting aquatic fauna migration
D.
Decreased soil fertility in floodplains
Correct Answer: C
Solution:
Large dams fragment rivers, making it difficult for aquatic fauna to migrate, especially for spawning.
A.
Region with high annual rainfall and low population
B.
Region with low rainfall and high population
C.
Region with high rainfall and polluted water
D.
Region with low rainfall and low population
Correct Answer: B
Solution:
A region with low rainfall and high population is likely to suffer from water scarcity due to higher demand and limited supply.
A.
Increased agricultural productivity.
B.
Improved water quality.
C.
Decreased floodplain fertility.
D.
Enhanced fish migration.
Correct Answer: C
Solution:
Sedimentation in reservoirs reduces the fertility of floodplains by depriving them of nutrient-rich silt, which is a natural fertilizer.
A.
Domestic use
B.
Irrigated agriculture
C.
Industrial cooling
D.
Hydel power generation
Correct Answer: B
Solution:
Irrigated agriculture is the largest consumer of water resources as it requires significant amounts of water to expand irrigated areas for agriculture.
A.
They generate electricity
B.
They regulate water flow
C.
They cause large scale displacements
D.
They provide irrigation facilities
Correct Answer: C
Solution:
Large dams and multi-purpose projects can cause large scale displacements and loss of livelihoods.
A.
Fragmentation of rivers affecting aquatic fauna migration.
B.
Increased sedimentation leading to rockier stream beds.
C.
Enhanced natural flow and sediment distribution.
D.
Submergence of existing vegetation and soil.
Correct Answer: C
Solution:
Large dams disrupt the natural flow and sediment distribution, rather than enhancing it. They cause sedimentation and affect aquatic life migration.
A.
They provide irrigation facilities to drought-prone areas.
B.
They help in controlling floods by regulating water flow.
C.
They lead to large-scale displacements and loss of livelihoods.
D.
They generate electricity for industries and homes.
Correct Answer: C
Solution:
Multi-purpose river projects often lead to large-scale displacements and loss of livelihoods, which is a significant disadvantage.
A.
Citrate
B.
Isocitrate
C.
Glucose
D.
Oxaloacetate
Correct Answer: C
Solution:
Glucose is not a part of the citric acid cycle; it is involved in glycolysis, which precedes the citric acid cycle.
A.
Improved sediment flow in rivers
B.
Enhanced migration of aquatic fauna
C.
Fragmentation of rivers and habitat disruption
D.
Increased water availability for all regions
Correct Answer: C
Solution:
Large dams fragment rivers, disrupting the natural flow and making it difficult for aquatic fauna to migrate, especially for spawning.
A.
It enhances the flood control capacity of dams.
B.
It reduces the flood control capacity of dams.
C.
It has no effect on flood control.
D.
It increases the water storage capacity of reservoirs.
Correct Answer: B
Solution:
Sedimentation reduces the flood control capacity of dams by decreasing the storage volume available for floodwaters.
A.
Pollution of water sources
B.
Lack of rainfall
C.
High population density
D.
Over-exploitation of water resources
Correct Answer: A
Solution:
Regions with high annual rainfall might still suffer from water scarcity if the water is highly polluted, making it unusable.
A.
Evaporation
B.
Precipitation
C.
Transpiration
D.
Infiltration
Correct Answer: D
Solution:
Infiltration is the process through which water seeps into the ground, replenishing groundwater resources. This is a key component of the hydrological cycle that ensures the renewal of groundwater.
A.
Improved water quality
B.
Enhanced fish migration
C.
Deprivation of silt to flood plains
D.
Increased agricultural productivity
Correct Answer: C
Solution:
Sedimentation in reservoirs can deprive flood plains of silt, which is a natural fertilizer.
A.
Sedimentation improves the habitat for aquatic life.
B.
Sedimentation leads to rockier stream beds, affecting aquatic habitats negatively.
C.
Sedimentation has no impact on aquatic life.
D.
Sedimentation increases the fertility of aquatic habitats.
Correct Answer: B
Solution:
Sedimentation at the bottom of reservoirs results in rockier stream beds, which negatively impacts aquatic habitats.
A.
Citrate Synthase
B.
Succinate Dehydrogenase
C.
Aconitase
D.
Malate Dehydrogenase
Correct Answer: B
Solution:
Succinate Dehydrogenase is the enzyme that catalyzes the conversion of succinate to fumarate in the citric acid cycle.
A.
High annual rainfall
B.
Over-exploitation and unequal access
C.
Presence of large water bodies
D.
Low population density
Correct Answer: B
Solution:
Water scarcity can occur due to over-exploitation, excessive use, and unequal access to water resources, even in areas with abundant water.
A.
It is constantly being recycled through the hydrological cycle.
B.
It is available in unlimited quantities.
C.
It can be artificially created.
D.
It does not get polluted.
Correct Answer: A
Solution:
Water is considered a renewable resource because it is continually renewed and recharged through the hydrological cycle.
A.
Cooling machinery
B.
Generating hydel power
C.
Washing raw materials
D.
Providing drinking water for employees
Correct Answer: D
Solution:
While factories use water for cooling machinery, generating hydel power, and washing raw materials, providing drinking water for employees is not a primary industrial use.
A.
They provide water to areas suffering from scarcity.
B.
They help in flood control.
C.
They can lead to large scale displacements.
D.
They generate electricity.
Correct Answer: C
Solution:
Multi-purpose river projects can lead to large scale displacements and loss of livelihood, which is a significant disadvantage.
A.
Low annual rainfall
B.
Over-exploitation and unequal access
C.
High evaporation rates
D.
Excessive precipitation
Correct Answer: B
Solution:
Water scarcity often results from over-exploitation of resources and unequal access, not just from low rainfall.
A.
High population density
B.
Unequal access to water
C.
High annual rainfall
D.
Over-exploitation of water resources
Correct Answer: C
Solution:
High annual rainfall is not a cause of water scarcity; rather, it is a factor that generally contributes to water abundance. Water scarcity in urban areas is often due to high population density, unequal access, and over-exploitation.
A.
By storing water permanently in underground reservoirs.
B.
Through continuous movement and recycling of water.
C.
By increasing the total volume of water on Earth.
D.
By converting saltwater into freshwater naturally.
Correct Answer: B
Solution:
The hydrological cycle involves the continuous movement and recycling of water through processes like evaporation, condensation, and precipitation, ensuring that water remains a renewable resource.
A.
Excessive agricultural use.
B.
Over-exploitation and unequal access.
C.
Lack of rainfall.
D.
High evaporation rates.
Correct Answer: B
Solution:
In urban areas, water scarcity is often caused by over-exploitation of resources and unequal access among different social groups, despite the presence of water.
A.
Coal
B.
Natural gas
C.
Water
D.
Oil
Correct Answer: C
Solution:
Water is a renewable resource because it is continually replenished through the hydrological cycle.
A.
Ocean water
B.
Glacial ice
C.
Groundwater
D.
Desalinated water
Correct Answer: C
Solution:
Groundwater is a renewable source of freshwater as it is continually recharged through the hydrological cycle.
A.
Citrate Synthase
B.
Succinate Dehydrogenase
C.
Aconitase
D.
Fumarase
Correct Answer: B
Solution:
Succinate Dehydrogenase catalyzes the oxidation of succinate to fumarate in the citric acid cycle.
A.
Unequal distribution of freshwater resources
B.
High salinity of ocean water
C.
Presence of ice caps and glaciers
D.
Evaporation from large water bodies
Correct Answer: A
Solution:
Water scarcity is often due to the unequal distribution of freshwater resources, which are limited compared to the vast amounts of saline ocean water.
A.
Increased biodiversity
B.
Salinisation of the soil
C.
Decreased crop yield
D.
Improved soil fertility
Correct Answer: B
Solution:
Irrigation can lead to salinisation of the soil, which is an ecological consequence of changing cropping patterns.
A.
Improved sediment flow
B.
Enhanced aquatic habitats
C.
Fragmented rivers and disrupted aquatic migration
D.
Increased natural fertilization of flood plains
Correct Answer: C
Solution:
Regulating and damming rivers can fragment them and disrupt the migration of aquatic fauna.
A.
To provide scenic views
B.
To utilize water for cooling machines
C.
To generate electricity using water flow
D.
To increase water supply for agriculture
Correct Answer: C
Solution:
Hydel power plants are built near water sources to generate electricity using the flow of water.
A.
By storing water underground permanently
B.
Through continuous movement and renewal of water
C.
By preventing water pollution
D.
By increasing rainfall in desert areas
Correct Answer: B
Solution:
The hydrological cycle involves the continuous movement and renewal of water, ensuring it remains a renewable resource.
A.
Increased biodiversity in aquatic habitats.
B.
Salinisation of the soil.
C.
Reduction in agricultural productivity.
D.
Decrease in water availability for irrigation.
Correct Answer: B
Solution:
Irrigation leading to water-intensive cropping patterns can cause salinisation of the soil, which is an ecological consequence.
A.
They bring water to areas suffering from scarcity.
B.
They help control floods by regulating water flow.
C.
They lead to large scale displacements and loss of livelihood.
D.
They generate electricity for industries and homes.
Correct Answer: C
Solution:
Option C is not in favor of multi-purpose river projects as it highlights a negative impact.
A.
Improved natural flow of rivers
B.
Increased sedimentation and habitat disruption
C.
Enhanced fish migration
D.
Decreased soil fertility
Correct Answer: B
Solution:
Large dams and multi-purpose projects often disrupt natural sediment flow, leading to increased sedimentation and habitat disruption.
A.
Glucose
B.
Citrate
C.
Lactose
D.
Glycerol
Correct Answer: B
Solution:
Citrate is one of the compounds involved in the citric acid cycle.
A.
High population density and pollution.
B.
Lack of rivers and lakes.
C.
Excessive evaporation rates.
D.
Presence of large deserts.
Correct Answer: A
Solution:
Regions with high annual rainfall might still face water scarcity due to high population density leading to overuse and pollution of available water resources.
A.
High levels of annual precipitation
B.
Unequal access to water among social groups
C.
Over-exploitation of groundwater
D.
Presence of large water bodies
Correct Answer: B
Solution:
Water scarcity can occur due to unequal access to water among different social groups, even in regions with ample water resources.
A.
Precipitation
B.
Surface runoff
C.
Groundwater
D.
Ocean water
Correct Answer: D
Solution:
Ocean water is saline and not considered a direct source of freshwater in the hydrological cycle.
A.
Succinyl-CoA Synthetase
B.
Succinate Dehydrogenase
C.
Malate Dehydrogenase
D.
Aconitase
Correct Answer: A
Solution:
Succinyl-CoA Synthetase catalyzes the substrate-level phosphorylation step in the citric acid cycle, producing GTP (or ATP).
True or False
Correct Answer: False
Solution:
Although three-fourths of the Earth's surface is covered with water, only a small proportion is freshwater that can be used.
Correct Answer: True
Solution:
The citric acid cycle is another name for the Krebs cycle, a series of chemical reactions used in cellular respiration.
Correct Answer: False
Solution:
Regions with high rainfall can still experience water scarcity due to pollution or large populations.
Correct Answer: True
Solution:
Multi-purpose river projects often require large areas of land, which can lead to displacement of communities and loss of livelihoods.
Correct Answer: False
Solution:
The construction of dams affects the natural flow and sediment flow of rivers, leading to ecological consequences.
Correct Answer: True
Solution:
Sedimentation in reservoirs can prevent silt from reaching floodplains, depriving them of natural fertilizers.
Correct Answer: False
Solution:
Dams can disrupt natural river flow, sediment transport, and aquatic habitats, leading to ecological consequences.
Correct Answer: False
Solution:
A large population increases water demand for domestic and agricultural use, which can lead to water scarcity even with sufficient rainfall.
Correct Answer: False
Solution:
While dams are designed to control water flow, they can sometimes trigger floods due to sedimentation in the reservoir.
Correct Answer: True
Solution:
Dams can disrupt natural sediment flow and fragment rivers, affecting aquatic habitats and causing sedimentation issues.
Correct Answer: False
Solution:
While multi-purpose river projects can help control floods, they can also cause floods due to sedimentation in reservoirs.
Correct Answer: True
Solution:
The Sardar Sarovar Dam on the Narmada River is a major project aimed at providing irrigation to drought-prone areas in Gujarat and Rajasthan.
Correct Answer: False
Solution:
The hydrological cycle ensures that water is continually renewed and recharged, making it a renewable resource.
Correct Answer: True
Solution:
Multi-purpose river projects often result in the displacement of people and loss of their livelihoods.
Correct Answer: True
Solution:
Water scarcity is not only about the physical availability of water but also about how it is managed and distributed. Over-exploitation and unequal access can lead to scarcity even in water-rich areas.
Correct Answer: True
Solution:
Water scarcity can occur in regions with ample resources if there is unequal access among different social groups.
Correct Answer: True
Solution:
The Sardar Sarovar Dam, built over the Narmada River, is a significant water resource project covering multiple states in India.
Correct Answer: False
Solution:
Water scarcity can occur in regions with high rainfall if the water is polluted or if there is unequal access to water resources.
Correct Answer: True
Solution:
Irrigated agriculture consumes the most water resources, as it requires significant water for crop production.
Correct Answer: True
Solution:
Even in regions with high rainfall, if the water is polluted, it cannot be used for drinking or agriculture, leading to water scarcity.
Correct Answer: True
Solution:
The hydrological cycle ensures that water is continually renewed and recharged, making it a renewable resource.
Correct Answer: False
Solution:
Regions with high annual rainfall can still suffer from water scarcity due to factors like pollution, large populations, and mismanagement of water resources.
Correct Answer: False
Solution:
Even regions with high annual rainfall can suffer from water scarcity due to factors like pollution and large populations.
Correct Answer: False
Solution:
Even regions with high annual rainfall can suffer from water scarcity if the water is highly polluted or if there is a large population.
Correct Answer: True
Solution:
Dams can fragment rivers and affect sediment flow, which disrupts aquatic habitats and migration patterns.
Correct Answer: False
Solution:
Multi-purpose river projects can cause ecological consequences such as soil salinisation and habitat fragmentation.
Correct Answer: True
Solution:
Irrigated agriculture requires significant water resources, making it the largest consumer.
Correct Answer: True
Solution:
Irrigation from multi-purpose river projects can change cropping patterns and lead to soil salinisation.
Correct Answer: True
Solution:
The Sardar Sarovar Dam is designed to supply water to drought-prone regions, enhancing irrigation and agricultural productivity.
Correct Answer: True
Solution:
Regions with high annual rainfall can still experience water scarcity if the available water is polluted, making it unusable for consumption or agriculture.
Correct Answer: False
Solution:
Multi-purpose river projects can cause ecological issues such as poor sediment flow, habitat disruption, and increased sedimentation.
Correct Answer: False
Solution:
Dams and multi-purpose river projects regulate and alter the natural flow of rivers, affecting sediment flow and aquatic habitats.
Correct Answer: True
Solution:
The hydrological cycle continually renews and recharges surface and groundwater, making water a renewable resource.
Correct Answer: True
Solution:
Regulating and damming of rivers can lead to sedimentation, affecting the natural flow and ecosystem.
Correct Answer: False
Solution:
Multi-purpose river projects can lead to ecological issues such as sedimentation, habitat disruption, and changes in river flow, which negatively impact the environment.
Correct Answer: False
Solution:
Water scarcity can occur in regions with high rainfall if the water is highly polluted or there is unequal access to water resources.
Correct Answer: True
Solution:
Dams can fragment rivers, affecting sediment flow and making it difficult for aquatic fauna to migrate.
Correct Answer: False
Solution:
Water scarcity can also result from over-exploitation, pollution, and unequal access to water resources, not just low rainfall.
Correct Answer: False
Solution:
Dams can sometimes trigger floods due to sedimentation in the reservoir, which can reduce their effectiveness in controlling floods.
Correct Answer: False
Solution:
Water scarcity can also result from human activities such as over-exploitation of water resources and unequal distribution.
Correct Answer: True
Solution:
The Sardar Sarovar Dam is designed to supply water to drought-prone regions in Gujarat and Rajasthan, among others.
Correct Answer: True
Solution:
The Sardar Sarovar Dam project aims to provide assured water supply to drought-prone areas, potentially making them drought-proof.
Correct Answer: True
Solution:
The citric acid cycle includes decarboxylations and redox reactions that produce NADH, FADH2, and GTP (or ATP).
Correct Answer: True
Solution:
Water is essential for life, providing necessary hydration and supporting agriculture, but it can also cause destruction through floods.
Correct Answer: True
Solution:
The hydrological cycle continually renews and recharges water through processes such as precipitation and surface run-off.
Correct Answer: True
Solution:
Multi-purpose river projects can alter natural water flows, leading to sedimentation and disruption of aquatic habitats.
Correct Answer: True
Solution:
Factories require water for various purposes, including cooling machines.
Correct Answer: True
Solution:
Dams can cause sedimentation at the bottom of reservoirs, affecting the natural flow and sediment transport of rivers.
Correct Answer: True
Solution:
The hydrological cycle continually renews and recharges water resources, making water a renewable resource.