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Role of Rivers in the Economy – Long Answer Questions
Medium Level (Application & Explanation)
Q1. Explain how rivers support the economy through irrigation, navigation, and hydro-power.
Answer:
- Rivers provide irrigation water. This helps farmers grow crops and earn income.
- With regular water, fields stay fertile and productive.
- Rivers support navigation. Boats carry goods and people at a low cost.
- This improves trade between towns and cities near rivers.
- Rivers help in hydro-power generation through dams.
- Hydro-power gives electricity for homes, farms, and industries.
- Thus, rivers create jobs and support the overall economy.
Q2. Why did many cities grow around rivers? Explain with reasons linked to daily life and economic growth.
Answer:
- Rivers give fresh water for drinking and cooking.
- They provide water for farming, which feeds the city.
- Riverbanks have fertile soil, so food supply is stable.
- Rivers allow transport and trade using boats.
- People settled there for safety and easy movement.
- Industries used river water for cooling and cleaning.
- All this helped cities grow in population and economy.
Q3. Explain the role of rivers in supporting Indian agriculture and rural livelihoods.
Answer:
- Most people in India depend on farming.
- Rivers give steady irrigation for fields.
- Regular water means better crop yields.
- Farmers can grow more than one crop in a year.
- Better harvests increase income for rural families.
- This supports markets, transport, and local jobs.
- Thus, rivers are key to food security and rural growth.
Q4. Describe the main causes of river pollution. Link them to daily human activities.
Answer:
- Domestic waste from homes flows as sewage into rivers.
- Industrial waste adds chemicals and toxic materials.
- Agricultural runoff carries fertilizers and pesticides.
- Plastic and solid waste are thrown near riverbanks.
- Religious and social events add flowers and offerings.
- Poor drainage mixes rainwater with sewage and dirt.
- All these make the river water unsafe for use.
Q5. What are GAP and NRCP? Explain their goals and how they try to clean rivers.
Answer:
- Ganga Action Plan (GAP) started in 1985.
- Its aim was to reduce pollution in the Ganga.
- It focused on building sewage treatment and stopping dirty drains.
- National River Conservation Plan (NRCP) began in 1995.
- It works to improve water quality in many rivers.
- It supports treatment plants, riverfront cleaning, and awareness.
- The goal is to keep rivers as safe water sources.
High Complexity (Analysis & Scenario-Based)
Q6. A town depends on a river for drinking and farming. Pollution has increased. Suggest a practical action plan to restore clean water.
Answer:
- Set up sewage treatment plants (STPs) to clean domestic waste.
- Make industries treat water before discharge.
- Stop direct drains from entering the river.
- Create green buffers and plant trees along riverbanks.
- Train communities on waste segregation and safe disposal.
- Start regular water testing and public reporting.
- Enforce fines for illegal dumping and reward good practices.
Q7. A hilly state must choose between river navigation and hydro-power. Compare both and recommend the better option with reasons.
Answer:
- Navigation helps trade but needs safe routes and steady water.
- In hills, rivers are fast and narrow, so navigation is risky.
- Hydro-power uses steep slopes for efficient electricity.
- It can light homes and support small industries.
- But dams must protect fish and people’s rights.
- Given the terrain, hydro-power is usually more practical.
- With care and safeguards, it can boost the local economy.
Q8. A farmer near a river uses chemical fertilizers. After heavy rain, many fish die. Analyze the causes and suggest changes.
Answer:
- Rain washes fertilizers into the river.
- Extra nutrients cause algae growth in water.
- Algae use up oxygen, and fish cannot breathe.
- This leads to sudden fish deaths.
- The farmer should use compost and reduce chemicals.
- Build bunds and grass strips to stop runoff.
- Keep a buffer zone of plants near the river.
Q9. You are planning a new riverside city. Make guidelines to prevent pollution while supporting growth.
Answer:
- Install STPs before any water enters the river.
- Zone industries away from the riverbank.
- Create wide green belts and walking paths.
- Build proper solid waste systems and recycling.
- Protect floodplains and avoid construction there.
- Harvest rainwater and recharge groundwater.
- Run awareness programs for citizens and schools.
Q10. In a drought year, the river’s water is very low. How should the community share water fairly? Justify your priorities and solutions.
Answer:
- First priority is drinking water for people and animals.
- Second is basic sanitation for health.
- Third is essential farming for food crops.
- Industries must reduce use and recycle water.
- Fix leaks, use drip irrigation, and reuse greywater.
- Share water by clear rules and community meetings.
- Prepare long-term plans like storage and watershed work.