Water Resources Important Questions.

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1. Q1Medium

   Which traditional water system in Meghalaya uses bamboo pipes to divert perennial springs for irrigation?

   • A.Rooftop Rainwater Harvesting
   • B.Johads
   • C.Bamboo Drip Irrigation System
   • D.Khadins
   Answer: Bamboo Drip Irrigation System

   Explanation: The context describes the **Bamboo Drip Irrigation System** prevalent in Meghalaya, where bamboo pipes transport and distribute water from springs over long distances to agricultural fields. This method is efficient and sustainable, preserving natural water flow without altering the terrain significantly.

2. Q2Medium

   What is the primary purpose of a dam’s spillway or weir?

   • A.To store rainwater from rooftops
   • B.To purify water through filtration
   • C.To control water flow
   • D.To generate electricity independently
   Answer: To control water flow

   Explanation: Dams feature **spillways or weirs** to either **continuously or intermittently release water**, preventing overflow and reducing the risk of catastrophic dam failures. This ensures regulated water release for irrigation, hydropower, and downstream ecosystems.

3. Q3Medium

   In the context of rooftop rainwater harvesting, what is the role of the 'sump'?

   • A.It distributes water to plants
   • B.It diverts rainwater to open drains
   • C.It collects and stores filtered rainwater for immediate usage
   • D.It evaporates excess water
   Answer: It collects and stores filtered rainwater for immediate usage

   Explanation: The **sump** in a rooftop rainwater harvesting system **collects and temporarily stores filtered water** after it passes through sand and brick filters. It ensures a constant supply for household use while excess water is diverted to recharge groundwater.

4. Q4Medium

   Which of these is NOT a cause of water scarcity?

   • A.Over-exploitation of freshwater resources
   • B.Uneven distribution of water resources
   • C.Pollution of water bodies
   • D.Increased precipitation
   Answer: Increased precipitation

   Explanation: Water scarcity is primarily driven by **over-exploitation, uneven distribution, pollution, and high demand** rather than increased precipitation. While heavy rainfall may cause flooding, it **does not inherently address scarcity**—especially when mismanagement and inequitable access persist.

5. Q5Medium

   What is the primary aim of the Atal Bhujal Yojana?

   • A.To build new large dams
   • B.To provide piped water to all cities
   • C.To promote behavioral change toward water conservation
   • D.To increase groundwater extraction
   Answer: To promote behavioral change toward water conservation

   Explanation: The **Atal Bhujal Yojana** targets **water-stressed regions** by **encouraging communities** to shift from **water consumption** to **conservation** and **smart water management**. It fosters awareness and sustainable practices to mitigate over-exploitation.

6. Q6Medium

   Which of the following is a traditional method of water storage commonly found in arid regions like Rajasthan?

   • A.Tankas
   • B.Dams
   • C.Rooftop harvesting
   • D.Johads
   Answer: Tankas

   Explanation: Tankas are traditional underground storage tanks used in arid and semi-arid regions like Rajasthan to store drinking water. They were designed to collect and preserve rainwater for extended periods, ensuring water availability during dry seasons.

7. Q7Medium

   What is the primary reason for the depletion of groundwater resources in urban areas?

   • A.Over-exploitation due to groundwater pumping devices
   • B.Increased rainfall
   • C.Better water conservation policies
   • D.Decreased industrial usage
   Answer: Over-exploitation due to groundwater pumping devices

   Explanation: Urban housing societies and colonies often install groundwater pumping devices to meet their water needs, leading to over-exploitation and depletion of groundwater resources. This is particularly evident in densely populated cities.

8. Q8Medium

   Which of the following is NOT an advantage of multi-purpose river projects?

   • A.Bringing water to water-scarce areas
   • B.Controlling floods by regulating water flow
   • C.Generating electricity for industries and homes
   • D.Large-scale displacements and loss of livelihood
   Answer: Large-scale displacements and loss of livelihood

   Explanation: Multi-purpose river projects, while providing benefits like water supply, flood control, and electricity generation, often lead to large-scale displacements and loss of livelihood for local communities, causing social and environmental issues.

9. Q9Medium

   What was the primary purpose of the Hirakud project in the Mahanadi basin?

   • A.Integrating conservation of water with flood control
   • B.Increasing agricultural productivity
   • C.Generating maximum hydropower
   • D.Expanding urban water supply
   Answer: Integrating conservation of water with flood control

   Explanation: The Hirakud project aims to integrate water conservation with flood control, ensuring sustainable water management and reducing the adverse impacts of floods on downstream areas.

10. Q10Medium

    Which state in India has made rooftop rainwater harvesting compulsory for all houses?

    • A.Tamil Nadu
    • B.Rajasthan
    • C.Meghalaya
    • D.Kerala
    Answer: Tamil Nadu

    Explanation: Tamil Nadu is the first state in India to enforce a legal mandate for rooftop rainwater harvesting structures in all houses, ensuring compliance and promoting water conservation.

11. Q11Medium

    How does traditional rainwater harvesting in Meghalaya, such as rooftop harvesting, contribute to water availability despite high rainfall?

    • A.Supplying 15-25% of household water needs
    • B.Increasing surface water levels
    • C.Reducing groundwater depletion
    • D.Eliminating the need for dams
    Answer: Supplying 15-25% of household water needs

    Explanation: Despite receiving the highest rainfall in the world, Meghalaya faces water scarcity due to improper management. Rooftop rainwater harvesting structures in Shillong provide 15-25% of the total water requirement for households, showcasing its effectiveness.

12. Q12Medium

    Which of the following is a major ecological consequence of multi-purpose dams?

    • A.Salinization of soil
    • B.Increase in biodiversity
    • C.Reduction in water pollution
    • D.Improved groundwater recharge
    Answer: Salinization of soil

    Explanation: Multi-purpose dams have led to ecological consequences such as salinization of soil due to changes in cropping patterns and excessive irrigation, impacting agricultural productivity and ecosystem health.

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