#1
Which of the following is the largest consumer of water worldwide?
Agriculture
ExplanationAgriculture consumes the most water globally due to irrigation needs.
#2
What percentage of Earth's water is freshwater?
3%
ExplanationOnly 3% of Earth's water is freshwater, the rest being saltwater.
#3
Which of the following is a key factor contributing to water scarcity?
All of the above
ExplanationMultiple factors like overuse, pollution, and climate change contribute to water scarcity globally.
#4
What is the term for the process by which water evaporates from plants?
Transpiration
ExplanationTranspiration is the process of water movement through plants, evaporating from leaves.
#5
What is the term for the process of collecting and storing rainwater for later use?
Rainwater harvesting
ExplanationRainwater harvesting involves capturing and storing rain for various purposes like irrigation.
#6
Which of the following is a major cause of water pollution?
All of the above
ExplanationVarious sources including industrial waste, agricultural runoff, and sewage contribute to water pollution.
#7
Which of the following is not a method of water conservation?
Desalination
ExplanationDesalination is not a conservation method but rather a process of making seawater drinkable.
#8
What is the primary purpose of greywater recycling?
To conserve freshwater resources
ExplanationGreywater recycling aims to reuse wastewater for non-potable purposes, conserving freshwater.
#9
Which country is the largest exporter of bottled water?
Italy
ExplanationItaly is known for exporting significant amounts of bottled water worldwide.
#10
What is the term for the process of removing salt from seawater to make it suitable for drinking?
Desalination
ExplanationDesalination is the process of salt removal from seawater, making it potable.
#11
Which country has the highest per capita water usage?
Saudi Arabia
ExplanationSaudi Arabia has high per capita water usage due to its arid climate and heavy reliance on desalination.
#12
What is the primary function of a water treatment plant?
To remove contaminants from water
ExplanationWater treatment plants purify water by removing contaminants, making it safe for consumption.
#13
Which organization oversees the implementation of the Clean Water Act in the United States?
EPA (Environmental Protection Agency)
ExplanationThe EPA is responsible for enforcing the Clean Water Act in the U.S., ensuring water quality.
#14
Which river is the longest in the world?
Nile
ExplanationThe Nile River in Africa is considered the longest river globally.
#15
Which of the following is a characteristic of hard water?
Contains dissolved calcium and magnesium ions
ExplanationHard water contains high levels of calcium and magnesium ions, leading to scaling issues.
#16
What is the term for the process of reducing water flow by obstructing its passage?
Water diversion
ExplanationWater diversion involves redirecting water flow through barriers or channels for various purposes.
#17
What is the primary objective of water quality monitoring?
To ensure compliance with regulations
ExplanationWater quality monitoring aims to ensure that water bodies meet regulatory standards for human and environmental health.