NCERT Solutions Class 7 SST Chapter 7: Infrastructure: Engine of India's Development | Notes Bazar Skip to content
Handwritten CBSE notes · instant PDF download after payment +91 88240 98091
Home › NCERT Solutions › Class 7 SST › Chapter 7
NCERT Solutions · Class 7 SST · Exploring Society: India and Beyond Part 2 · Chapter 7

Chapter 7: Infrastructure: Engine of India's Development (Economics)

Answers to all "Questions and activities" of Part 2, Chapter 7, Infrastructure: Engine of India's Development (NCERT Class 7 Social Science, Exploring Society: India and Beyond Part 2, 2026-27): physical infrastructure, jobs and indirect benefits, environment-friendly development, infrastructure in disasters, care of public property, scenario posters and innovations. All 7 questions are answered, with the key answer highlighted.

Questions and activities

1
Which form of physical infrastructure has been built in your area in the last decade? How has it benefitted you or your family? If you could build something for the community, what would it be?
Solution

Example: in our area a new metro line and a flyover were built in the last few years. My father now reaches his office in 30 minutes instead of an hour, traffic jams have reduced, and we can visit relatives across the city easily and cheaply. A new government hospital also opened nearby.

What I would build: a community library and learning centre with free internet, study rooms and a children's corner, powered by solar panels, with a small park and a rainwater harvesting tank. It would help students without space or internet at home and bring people together.

E.g. a metro line and flyover that cut travel time and traffic; I would build a solar-powered community library with internet, study space, a park and rainwater harvesting.

2
How does infrastructure like ports, highways and airports create jobs in different parts of the country? Can you think of indirect ways people benefit?
Solution

Direct jobs: engineers, construction workers, drivers, pilots, port workers, security staff, maintenance workers and officials are needed to build and run them.

Indirect benefits:

  • Easier transport of goods leads to new factories, warehouses and businesses near highways and ports, creating more jobs.
  • Farmers can send produce quickly to distant markets and get better prices.
  • Tourism grows, helping hotels, restaurants, guides and handicraft sellers.
  • Small shops, dhabas, petrol pumps and repair shops open along highways.
  • Better connectivity improves access to schools, hospitals and jobs in cities; land values rise.
  • Cheaper transport can lower the prices of goods.

They directly employ builders, drivers, port and airport staff; indirectly they attract factories, warehouses, tourism and roadside businesses, help farmers reach markets, and improve access to education, health and jobs.

3
Why is it important to think about the environment when building new infrastructure? Can infrastructure development and environmental protection go hand in hand? If yes, how?
Solution

Why: building roads, airports, dams and factories can cut forests, destroy wildlife habitats, pollute air and water, block rivers, increase floods and landslides, and add to climate change. Damage to the environment eventually harms people's health and livelihoods.

Yes, they can go together:

  • Careful planning and environmental impact assessments before building.
  • Avoiding sensitive areas; building wildlife corridors and underpasses (e.g. under highways through forests).
  • Planting trees to replace those cut (compensatory afforestation).
  • Using renewable energy (solar-powered airports like Kochi), energy-efficient buildings and recycled materials.
  • Rainwater harvesting, proper drainage and waste management.
  • Promoting public transport, metros and electric vehicles to cut pollution.

Infrastructure can destroy forests, habitats and clean air and water; with planning, impact assessments, wildlife corridors, tree planting, renewable energy (e.g. solar-powered Kochi airport), rainwater harvesting and public transport, development and conservation can go together.

4
How can better infrastructure (roads, airports, communication systems) help during natural disasters like floods or earthquakes?
Solution
  • Communication systems (mobile networks, satellite phones, radio) give early warnings and help coordinate rescue.
  • Good roads, bridges and airports let rescue teams, the army, NDRF, doctors and relief supplies (food, water, medicines) reach affected areas quickly, and help evacuate people.
  • Strong, earthquake-resistant buildings and well-built embankments reduce damage.
  • Hospitals, cyclone shelters and power backup keep essential services running.
  • Weather stations and satellites forecast cyclones and heavy rain in advance.

Communication networks give warnings and coordinate rescue, good roads and airports bring rescue teams and supplies and allow evacuation, and strong buildings, shelters and hospitals reduce damage and save lives.

5
Have you ever noticed people misusing public spaces, like scribbling on walls, breaking streetlights or damaging benches? What are its consequences? Write your observations and suggest solutions.
Solution

Observations: graffiti and spitting on walls of railway stations and monuments, broken benches in parks, damaged street lights and bus shelters, littering, and stolen manhole covers.

Consequences:

  • Public money (our taxes) is wasted on repairs.
  • Places become unsafe (dark streets without lights, open manholes) and unhygienic.
  • Monuments and heritage are damaged forever.
  • Everyone loses the use of shared facilities.

Solutions:

  • Awareness campaigns in schools and communities that public property belongs to all of us.
  • Fines and CCTV cameras to deter vandalism.
  • Community ownership: residents' groups adopting parks and bus stops.
  • Providing dustbins and designated walls for art (murals).
  • Setting a good example ourselves and reporting damage to the authorities.

Graffiti, broken benches and lights, and littering waste public money, make places unsafe and damage heritage; solutions include awareness, fines and CCTV, community adoption, dustbins and art walls, and reporting damage.

6
Prepare 'scenario posters': (a) a new factory is planned in an area: what infrastructure is required? (b) Imagine futuristic infrastructure (self-cleaning roads, underground highways, bullet trains) that could ease people's lives in your city, town or village. (c) Think about upgrades to the infrastructure near you, considering your terrain and the natural calamities your region is prone to. (d) If you could design a new railway or metro station, what features would you add?
Solution

(a) New factory: good roads/railway connection, reliable electricity (or solar power), water supply and waste-water treatment, internet and phone networks, warehouses, a nearby bank, housing, schools and a health centre for workers, and fire safety.

(b) Futuristic town: solar roads that light up at night, underground metro and cargo tunnels, electric buses and bullet trains, smart traffic lights, automatic waste-sorting bins, rainwater harvesting in every building, drones delivering medicines to villages, and free high-speed internet everywhere.

(c) Terrain-based upgrades (examples):

  • Coastal: cyclone shelters, mangrove belts, early-warning sirens, raised houses.
  • Mountains: landslide-proof roads with retaining walls, all-weather tunnels, ropeways, helipads.
  • Plains (flood-prone): better drainage, embankments, raised roads and flood shelters.
  • Earthquake-prone areas: earthquake-resistant buildings and open evacuation grounds.

(d) My dream metro station: ramps, lifts and tactile paths for people with disabilities, clean free toilets and drinking water, solar roofs, indoor plants and art walls showing local culture, digital maps and announcements in many languages, a small library corner, bicycle parking and charging points, and a play area for children.

(a) Roads/rail, power, water, waste treatment, internet, banks, housing and health facilities. (b) Solar roads, underground metros, smart traffic, waste-sorting, drone deliveries. (c) Cyclone shelters (coast), landslide-proof roads (hills), drainage and embankments (plains). (d) Accessible, solar-powered stations with clean facilities, art, multilingual signs and cycle parking.

7
Modern infrastructure requires consistent technological innovation, e.g. electric vehicles. Find out about other innovations that can improve ease of living or mobility.
Solution
  • Metro rail and Rapid Rail (RRTS) for fast, clean urban transport.
  • FASTag electronic toll collection, reducing waiting at toll plazas.
  • Vande Bharat and high-speed trains; bullet train project.
  • Solar-powered airports and railway stations, solar street lights.
  • UPI and digital payments, DigiLocker, online government services.
  • Smart city systems: smart traffic lights, CCTV, sensors for water and waste.
  • Electric buses and charging stations, e-rickshaws.
  • Drones for deliveries and surveys; 5G and BharatNet broadband to villages.
  • Green buildings with energy-saving designs.

E.g. metros and RRTS, FASTag, Vande Bharat trains, solar-powered airports and street lights, UPI and DigiLocker, smart-city systems, electric buses, drones, 5G and rural broadband, and green buildings.

← Chapter 6: The State, the Government, and You Chapter 8: Banks and the Magic of Finance →

Found a mistake or need help with a question? Message us on WhatsApp.