Very Short Answer Questions: Infrastructure: Engine of India's Development

Q1: What is physical infrastructure?

Ans: Physical infrastructure is a vast network of tangible structures built to keep our cities and villages functioning. It includes transportation systems, utilities, communication networks, and energy infrastructure.

Q2: What are the main components of transportation systems in physical infrastructure?

Ans: The main components of transportation systems include roads, bridges, railways, metro trains, airports, and ports. These structures help connect people and places across the country.

Q3: Why is physical infrastructure called the backbone of the nation?

Ans: Physical infrastructure is called the backbone of the nation because it makes life easier for people, businesses, and the government. It connects producers to markets and supports tourism and emergencies.

Q4: What is India's ranking in the world for road network size?

Ans: India has the second-largest road network in the world after the United States as of 2024. This extensive network connects cities, towns, and villages across the country.

Q5: What are local roads, and how do they help communities?

Ans: Local roads are near your home and help children reach school, farmers carry crops to markets, and ambulances reach hospitals. They serve the everyday needs of local communities.

Q6: Who builds and maintains national highways and expressways in India?

Ans: National highways and expressways are built and maintained by the central government. They are super fast roads that join cities across states and connect with railway stations and airports.

Q7: What is the length of India's national highways as of 2025?

Ans: As of 2025, India's national highways are around 150,000 kilometres long. These highways connect major cities and states across the country for faster travel.

Q8: Which is the longest national highway in India, and what is its length?

Ans: NH44 is the longest national highway in India at 4,112 kilometres. It runs from Srinagar in the north to Kanyakumari in the south.

Q9: What is the Golden Quadrilateral?

Ans: The Golden Quadrilateral is an important highway network connecting Delhi, Mumbai, Chennai, and Kolkata. It helps in the faster transport of people and goods between these major cities.

Q10: Why are bridges and tunnels built in difficult terrains?

Ans: Bridges and tunnels enable ease of access in difficult terrains like dense forests, wide river beds, and steep mountains where highways cannot be built everywhere.

Q11: How has the Dhola Sadiya Bridge helped the people of Assam and Arunachal Pradesh?

Ans: The Dhola Sadiya Bridge provides year-round travel and has cut travel time by four hours. Farmers can take produce to market faster, and people can access hospitals during floods.

Q12: What makes the living root bridges of Meghalaya unique?

Ans: The living root bridges are crafted by the Khāsi and Jaintia tribes using roots of the Indian rubber tree. They are living and growing structures that can last hundreds of years.

Q13: When and why did the British introduce railways in India?

Ans: The British introduced railways in India in 1853. Their purposes were to transport raw materials to ports for export, help British goods move across India, and enable troop movement.

Q14: What is India's ranking in the world for railway system size?

Ans: Indian Railways is the fourth-largest railway system in the world. It carries over 20 million passengers every day and is one of the cheapest train services globally.

Q15: Why are cargo trains more efficient than road transport?

Ans: Cargo trains use 75 to 90 per cent less energy than road transport. They carry goods like coal, grains, textiles, and electronics more efficiently across long distances.

Q16: How many people does Indian Railways employ?

Ans: Indian Railways is the largest employer with about 1.21 million employees in 2024. These include engineers, ticket collectors, and service staff, creating many indirect jobs too.

Q17: What are the main benefits of metro train systems in Indian cities?

Ans: Metro trains offer fast and reliable travel, reduce road traffic, and lower pollution by using cleaner fuels like electricity. Some metros also use solar power for operation.

Q18: Why is air transport particularly helpful during disasters?

Ans: Air transport is particularly helpful in delivering aid during disasters like floods and earthquakes. It can reach difficult terrains like high mountains, deserts, and dense forests quickly.

Q19: How many airports does India have in 2025?

Ans: In 2025, India has 159 airports. India has the third-highest domestic air traffic in the world, handling around 376 million passengers in 2024 to 2025.

Q20: Why is shipping considered cheaper for heavy goods?

Ans: Shipping is a cheaper mode of transport for heavy goods like coal, cars, and cement over long distances. India's approximately 11,100-kilometre coastline supports trade through shipping.

Q21: What happens when Rani sends a voice note from Madhya Pradesh to Tamil Nadu?

Ans: The message travels through mobile towers powered by electricity, through fibre cables, gets transmitted to satellites in space, travels through servers, and finally appears on her cousin's phone.

Q22: How does e-governance help citizens?

Ans: E-governance allows citizens to apply for documents, file complaints, or get information easily using communication technologies. An example is the DigiLocker app for storing and accessing documents.

Q23: What was J. C. Bose's contribution to communication in India?

Ans: J. C. Bose pioneered wireless communication in India. In 1895, he demonstrated wireless signals passing through walls and invented key wireless devices, influencing later radio communication developments.

Q24: What are examples of social infrastructure in communities?

Ans: Social infrastructure includes schools, colleges, training centres, hospitals, health centres, police stations, fire stations, courts, parks, libraries, and community centres that support community wellbeing and development.

Q25: What did the Arthaśhāstra emphasise about infrastructure?

Ans: The Arthaśhāstra emphasised planned infrastructure under state supervision. Roads had fixed widths based on their purpose and traffic, and damage to public works attracted strict punishments and fines.