Population Class 9 Social Science NCERT

QWhy is population considered a pivotal element in social studies?

Population is central because most concepts in social studies gain meaning through people. Humans make and use resources and are themselves resources of varying quality. For example, coal becomes a ‘resource’ only when people develop technology to extract and use it. Similarly, floods or tsunamis become ‘disasters’ mainly when they affect a crowded village or town. Therefore, understanding population numbers, distribution, growth, and characteristics provides a basic background for studying the environment, development, and society. People are also both producers and consumers of the earth’s resources.

QWhat was India’s total population according to the 2011 Census?

According to the Census data cited in the chapter, India’s population as of March 2011 stood at 1,210.6 million (about 1.21 billion). This total is significant because it accounts for more than 17 percent of the world’s population, even though India has only 2.4 percent of the world’s area. The chapter uses this figure to explain why it is important to study not only total population size but also how people are distributed, how fast numbers are changing, and what characteristics different age groups have.

QHow does India’s area compare with its share of world population in 2011?

The chapter notes that India’s vast area is about 3.28 million square kilometers, which is roughly 2.4 percent of the world’s total area. However, India’s population in 2011 was 1,210.6 million, which is more than 17 percent of the world’s population. This comparison helps explain why India is considered heavily populated in relation to its land area. It also supports the need to study population density and uneven distribution, because large numbers of people are spread across different regions very unequally.

QWhich state was the most populous in India in 2011, and what was its population?

The chapter states that Uttar Pradesh was the most populous state in India according to the 2011 Census. Its population was about 199 million, which accounted for roughly 16 percent of the country’s total population. This example is used to show how population is unevenly distributed across states. While some states have very large populations, others have much smaller totals, creating major differences in planning needs for resources, services, and development across different parts of India.

QWhich regions had very small populations in 2011 as mentioned in the chapter?

The chapter highlights two examples of very small populations to show contrast with highly populated areas. The Himalayan state of Sikkim had a population of about 0.6 million in 2011. Lakshadweep had only 64,429 people. These figures help students understand that India’s population is not spread evenly; instead, some areas have extremely small populations compared to states like Uttar Pradesh. Such differences affect regional development, infrastructure needs, and the way resources and services are planned.

QWhich five states together had almost half of India’s population in 2011?

As per the chapter, almost half of India’s population lives in just five states: Uttar Pradesh, Maharashtra, Bihar, West Bengal, and Andhra Pradesh. This fact is important for understanding population concentration and uneven distribution. When a large share of people is clustered in a few states, it affects how resources, jobs, housing, education, and healthcare demand are distributed. It also helps explain why population studies often focus on both total numbers and where people live, not just national totals.

QWhy is Rajasthan used as an example when discussing population distribution?

Rajasthan is used to show that a large area does not necessarily mean a large population. The chapter mentions that Rajasthan is the biggest state in terms of area, yet it has only 5.5 percent of India’s total population. This illustrates uneven distribution: population depends on many factors beyond land size. The example supports the need to use measures like population density, which relate people to area, rather than relying only on total population or physical size of states.

QWhat is a census, according to this chapter?

A census is defined in the chapter as an official enumeration of the population done periodically. It is a systematic count that provides information about how many people live in a country and other demographic, social, and economic details. The chapter emphasizes that the census is essential for understanding population size, distribution, growth, and characteristics. For India, the Census of India is described as the most comprehensive source of such demographic and related data.

QWhen was the first census held in India and when was the first complete census taken?

The chapter states that India’s first census was held in 1872. However, the first complete census was taken in 1881. These dates are important because they show the start of a regular system for collecting population data. The chapter also notes that since then, censuses have been held every ten years. This regularity allows comparison across decades, helping students understand changes in population size, density, growth trends, and distribution over time.

QHow often is the census conducted in India?

According to the chapter, censuses in India have regularly been held every ten years since the first complete census in 1881. This ten-year interval is important because it provides a periodic snapshot of population and related demographic, social, and economic information. Such regular data helps in tracking long-term trends such as population growth, changes in density, and shifts in distribution due to factors like migration. It also supports planning for services like education, health, and infrastructure.

QWhy is the Indian Census considered an important source of information?

The chapter describes the Indian Census as the most comprehensive source of demographic, social, and economic data. This is important because population studies need accurate information about how many people live in the country, where they live, and what characteristics they have. Census data supports understanding population distribution and density, tracking population growth over decades, and examining changes linked to birth rates and migration. Such information is crucial for planning development goals, public services, and welfare policies.

QWhat is population density and how is it calculated?

Population density provides a clearer picture of how unevenly people are distributed. The chapter explains that it is calculated as the number of persons per unit area. This measure connects population size with land area, making it easier to compare regions of different sizes. For example, two states might have different populations and areas; density helps show how crowded or sparse they are. The chapter uses density to explain why India is among the most densely populated countries in the world.

QWhat was India’s population density in 2011?

The chapter states that India’s population density in 2011 was 382 persons per square kilometer. This figure helps explain why India is considered one of the most densely populated countries. Density is a useful measure because it reveals how crowded an area is, rather than only giving total population. The chapter also emphasizes that density varies greatly at the state level, so a national average can hide large differences between very dense and very sparsely populated regions.

QWhich state had the highest population density in 2011 and what was the figure?

According to the chapter, Bihar had a population density of 1,102 persons per square kilometer in 2011, which is presented as a high value compared to other states. This example demonstrates strong variation in density across India. High density suggests more people living in a smaller area, which can influence housing, services, pressure on resources, and planning needs. The chapter uses such state comparisons to show that population distribution is uneven even within one country.

QWhich state had one of the lowest population densities in 2011 as per the chapter?

The chapter notes that Arunachal Pradesh had a population density of only 17 persons per square kilometer in 2011. This low density contrasts sharply with states like Bihar. Such differences highlight uneven population distribution across India. Low density often indicates large areas with fewer people, which can affect how infrastructure and services are provided, such as transport, schools, and healthcare. The chapter uses these figures to show why density patterns are important for understanding population distribution.

QHow did India’s population change between 1951 and 2011?

The chapter explains that India’s population increased steadily from 361 million in 1951 to 1,210 million in 2011. This long-term rise is used to introduce the concept of population growth and to help students see how fast the country’s population has expanded over six decades. The chapter also discusses that even when growth rates begin to decline, the total number of people added can remain large because the base population is already very high.

QWhat does the term ‘magnitude of population growth’ mean in this chapter?

In this chapter, the magnitude of population growth refers to the total population of an area at the beginning of a given time period. This idea helps students understand growth in relation to a starting point. When the base population is very large, even a smaller rate of increase can still result in a big absolute addition. The chapter uses this concept along with growth rate to explain why India continues to add a significant number of people each decade.

QWhat is the growth rate of population, and what trend is noted after 1981?

The chapter defines the growth rate of population as the rate at which the population is growing. It notes an important trend: since 1981, the rate of growth started declining gradually. The chapter connects this decline mainly to rapid decreases in birth rates that began during this period. However, it also explains that despite the declining growth rate, the number of people added every decade continues to be significant because India’s population base is already very large.

QWhy can India add many people even when the growth rate is declining?

The chapter explains that India’s population is very large, so even a low annual increase applied to such a big base results in a substantial absolute increase. This is why, despite a gradual decline in growth rates since 1981, the number of people added each decade can remain high. Understanding this helps students distinguish between percentage growth rate and actual numbers added. It also shows why population planning and resource management remain important even when growth rates slow down.

QHow did birth rates influence population growth trends after 1981?

According to the chapter, birth rates started to decline gradually after 1981. This decline contributed to a decrease in the rate of population growth. The chapter highlights this relationship to explain why population growth is not only about total population but also about processes of population change. Lower birth rates reduce how quickly the population grows, but the chapter also notes that large absolute increases can still occur due to India’s large population base. This makes long-term planning essential.

QWhat role does migration play in population distribution in India?

Migration plays a significant role in changing the composition and distribution of the population. The chapter clarifies that internal migration does not change the total size of the population, but it influences how people are spread across regions. Urban areas often show consistent population growth because people move from rural to urban regions for opportunities and better living conditions. The chapter also notes that migration affects population composition, including changes in age and sex patterns within regions.

QWhy do urban areas in India experience consistent population growth, as explained in the chapter?

The chapter explains that urban areas experience consistent population growth largely due to rural-to-urban migration. People move from rural regions because of adverse conditions there and are attracted to cities by opportunities and better living conditions. This movement changes where people live, increasing the population in towns and cities without changing the national total through internal migration. Such trends are important for understanding distribution and planning, because growing urban populations require housing, jobs, transport, education, and healthcare services.

QWhat is meant by ‘adolescent population’ and what age group does it include?

The chapter describes the adolescent population as an essential resource for the future and states that it makes up one-fifth of India’s total population. Adolescents are generally defined as those aged 10 to 19 years. This group is important because their health and development influence the country’s future workforce and society. The chapter uses this category to discuss specific needs, especially nutrition and health concerns, and to emphasize that adolescents—particularly girls—require focused attention in development planning.

QWhat health and nutrition concerns are highlighted for India’s adolescents?

The chapter explains that adolescents have higher nutritional needs than normal children or adults. However, many adolescents face inadequate diets, which can lead to deficiencies and stunted growth. It also highlights a specific concern for adolescent girls, who often suffer from anaemia and therefore deserve more attention in the development process. These points show why adolescents are viewed as an important resource for the future: improving their health and nutrition supports overall human resource quality and long-term social development.

QWhat is the National Population Policy (NPP) 2000 and what are its aims mentioned in the chapter?

The National Population Policy (NPP) 2000 is presented as a policy built on earlier efforts, especially the comprehensive Family Planning Programme initiated in 1952. The chapter states that the NPP aims to promote responsible and planned parenthood and improve individual health. It also supports broader developmental goals, including free education and reducing infant mortality rates. By linking population measures to health and education outcomes, the chapter shows that population policy is not only about numbers, but also about improving quality of life and development.

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