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All questions of Water and its Management for Grade 9 Exam
India has only ______ of the world’s freshwater but ______ of the world’s population.- a)18%; 4%
- b)4%; 18%
- c)10%; 15%
- d)2%; 25%
Correct answer is option 'B'. Can you explain this answer?
India has only ______ of the world’s freshwater but ______ of the world’s population.
a)
18%; 4%
b)
4%; 18%
c)
10%; 15%
d)
2%; 25%
|
Meghana Choudhary answered |
Understanding Freshwater Distribution in India
India is characterized by a significant discrepancy between its freshwater resources and its population size. This is crucial to comprehend given the challenges related to water availability and management.
Freshwater Availability
- India possesses approximately 4% of the world's total freshwater resources.
- This percentage is relatively low considering the vast geographic size and diverse climatic regions of the country.
Population Statistics
- Despite having only 4% of the world's freshwater, India is home to about 18% of the global population.
- This highlights the challenge of water scarcity, as a large number of people rely on a limited water supply.
Implications of the Discrepancy
- The mismatch between water resources and population leads to severe water stress in many regions.
- Urbanization, industrialization, and agricultural demands exacerbate the situation, leading to over-extraction of water resources.
Conclusion
- Understanding the relationship between freshwater availability and population is crucial for sustainable water management strategies in India.
- Policymakers need to address these challenges to ensure equitable access to water for all citizens.
This information is vital for grasping the complexities of water distribution and the need for prudent management in India.
India is characterized by a significant discrepancy between its freshwater resources and its population size. This is crucial to comprehend given the challenges related to water availability and management.
Freshwater Availability
- India possesses approximately 4% of the world's total freshwater resources.
- This percentage is relatively low considering the vast geographic size and diverse climatic regions of the country.
Population Statistics
- Despite having only 4% of the world's freshwater, India is home to about 18% of the global population.
- This highlights the challenge of water scarcity, as a large number of people rely on a limited water supply.
Implications of the Discrepancy
- The mismatch between water resources and population leads to severe water stress in many regions.
- Urbanization, industrialization, and agricultural demands exacerbate the situation, leading to over-extraction of water resources.
Conclusion
- Understanding the relationship between freshwater availability and population is crucial for sustainable water management strategies in India.
- Policymakers need to address these challenges to ensure equitable access to water for all citizens.
This information is vital for grasping the complexities of water distribution and the need for prudent management in India.
Greywater from households can be reused for:- a)Drinking purposes
- b)Irrigation, cleaning, and flushing toilets
- c)Cooking food
- d)Bottled water production
Correct answer is option 'B'. Can you explain this answer?
Greywater from households can be reused for:
a)
Drinking purposes
b)
Irrigation, cleaning, and flushing toilets
c)
Cooking food
d)
Bottled water production
|
C K Academy answered |
Greywater (from kitchens, sinks, bathrooms) can be reused safely for irrigation, cleaning, and flushing toilets, thus saving freshwater.
What percentage of rainwater is generally used for agriculture in India?- a)50%
- b)70%
- c)20%
- d)10%
Correct answer is option 'B'. Can you explain this answer?
What percentage of rainwater is generally used for agriculture in India?
a)
50%
b)
70%
c)
20%
d)
10%
|
|
C K Academy answered |
About 70% of rainwater is used for agriculture, 20% for industry, and 10% for domestic use in India.
Which government programme works to provide safe drinking water in rural areas?- a)Swachh Bharat Abhiyan
- b)Digital India
- c)Jal Jeevan Mission
- d)Skill India Mission
Correct answer is option 'C'. Can you explain this answer?
Which government programme works to provide safe drinking water in rural areas?
a)
Swachh Bharat Abhiyan
b)
Digital India
c)
Jal Jeevan Mission
d)
Skill India Mission
|
Trisha Vashisht answered |
Jal Jeevan Mission focuses on providing safe drinking water to rural households and is an important part of water conservation and supply in India.
What is the main purpose of conducting a water audit?- a)To calculate electricity consumption
- b)To study water usage, wastage, and suggest conservation methods
- c)To measure air pollution levels
- d)To estimate crop production
Correct answer is option 'B'. Can you explain this answer?
What is the main purpose of conducting a water audit?
a)
To calculate electricity consumption
b)
To study water usage, wastage, and suggest conservation methods
c)
To measure air pollution levels
d)
To estimate crop production
|
|
Trisha Vashisht answered |
A water audit studies water usage and wastage in homes, schools, or communities and suggests conservation methods. It helps predict future needs and manage water better.
Which of the following is a simple method to reduce wastage at home or school?- a)Leaving taps running
- b)Installing flow caps and aerators
- c)Allowing tanks to overflow
- d)Using leaking pipelines
Correct answer is option 'B'. Can you explain this answer?
Which of the following is a simple method to reduce wastage at home or school?
a)
Leaving taps running
b)
Installing flow caps and aerators
c)
Allowing tanks to overflow
d)
Using leaking pipelines
|
|
Trisha Vashisht answered |
Flow caps and aerators reduce water flow from taps without affecting usability, saving large amounts of water.
What is the formula for calculating water used from a tap?- a)Water Used = Time × Pressure
- b)Water Used = Flow Rate × Time tap is ON
- c)Water Used = Depth × Area
- d)Water Used = Population × Consumption
Correct answer is option 'B'. Can you explain this answer?
What is the formula for calculating water used from a tap?
a)
Water Used = Time × Pressure
b)
Water Used = Flow Rate × Time tap is ON
c)
Water Used = Depth × Area
d)
Water Used = Population × Consumption
|
EduRev Class 8 answered |
The formula is: Water Used = Flow Rate × Time tap is ON. This helps in measuring daily household or institutional water consumption.
What is the per person daily water requirement prescribed by Jal Jeevan Mission for urban areas?- a)55 L/day
- b)75 L/day
- c)100 L/day
- d)135 L/day
Correct answer is option 'D'. Can you explain this answer?
What is the per person daily water requirement prescribed by Jal Jeevan Mission for urban areas?
a)
55 L/day
b)
75 L/day
c)
100 L/day
d)
135 L/day
|
|
EduRev Class 8 answered |
According to Jal Jeevan Mission, the prescribed daily water requirement is 135 litres per person in urban areas and 55 litres per person in rural areas.
Which of the following is primary data in a water audit?- a)Government rainfall records
- b)Census population data
- c)Water usage observed in households
- d)Reports from Jal Shakti Ministry
Correct answer is option 'C'. Can you explain this answer?
Which of the following is primary data in a water audit?
a)
Government rainfall records
b)
Census population data
c)
Water usage observed in households
d)
Reports from Jal Shakti Ministry
|
|
C K Academy answered |
Primary data is collected directly through surveys, observations, or experiments, e.g., measuring household water usage.
Which of the following is not a groundwater recharge method?- a)Building check dams
- b)Creating percolation tanks
- c)Making contour bunds
- d)Burning crop residue
Correct answer is option 'D'. Can you explain this answer?
Which of the following is not a groundwater recharge method?
a)
Building check dams
b)
Creating percolation tanks
c)
Making contour bunds
d)
Burning crop residue
|
|
Trisha Vashisht answered |
Groundwater recharge includes contour bunds, check dams, percolation tanks, and borewell recharge. Burning crop residue does not help recharge water.
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Environmental Management for Grade 9
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