Population Growth

Correct answer: A. When the death rate falls and the birth rate remains high

The direct answer is A: growth can become faster when the death rate falls while the birth rate remains high. Better health services, vaccination, treatment and sanitation can reduce deaths, especially among children and other vulnerable people. If births continue at a high level at the same time, the number of births is much greater than the number of deaths. Natural increase is understood as births minus deaths, so a lower death rate can make this difference larger. Option B is wrong because a zero birth rate cannot create natural increase. Option C is wrong because high out-migration reduces the population in the area, and no births add nothing. Option D is wrong because failure to count people does not change actual population growth. Memory cue: natural increase depends on the balance between births and deaths; fewer deaths with many births means faster increase.

Correct answer: A. In-migration is the main source

The direct answer is A: in-migration is the most likely main source. Natural increase is the difference between births and deaths. If that difference is small, births are not adding many more people than deaths. Yet the city population can still grow quickly when people move into the city from villages, towns or other regions for work, education, business or services. Step by step: natural increase is low; the total population still rises rapidly; therefore another component, especially inward migration, must be contributing strongly. Option B is wrong because deaths do not add people. Option C is wrong because the size of an area does not itself create population. Option D is wrong because rainfall may influence living conditions but is not the demographic source described here. Memory cue: city growth comes from natural increase plus migration; if the first is low, look for the second.

Correct answer: A. When limited land is shared by more people and jobs are few

The direct answer is A: the effect is more visible when limited land must support more people and employment opportunities are few. In rural areas, families may depend heavily on farming or related work. If the available land is divided among more people, each household may receive a smaller share, and income can become inadequate. Few non-farm jobs make it harder to find another livelihood. Step by step: population increases; land per person falls; competition for work and resources rises; household income may become less secure; rural poverty can therefore become more visible. Option B is wrong because abundant land and sufficient jobs reduce pressure. Option C is wrong because a declining population does not represent the stated increase in pressure. Option D is wrong because strong irrigation and income generally improve livelihood conditions, though they do not remove every problem. Memory cue: more people, less land per person and fewer jobs create stronger livelihood pressure.

Correct answer: A. Future education, health and job demand may be misjudged

The direct answer is A: future demand for education, health services and jobs may be misjudged. Age structure means the distribution of people among age groups, such as children, working-age adults and older people. These groups have different needs. A large child population may require more schools now and more jobs later. A large working-age population may increase employment demand, while a large elderly population may require additional health and care services. If planners look only at total population and ignore age composition, they may build too few or too many facilities and prepare for the wrong future demand. Option B is wrong because age structure does not automatically make the birth rate correct. Option C is wrong because ignoring age data does not end migration. Option D is wrong because land area is unrelated to this error. Memory cue: total number tells “how many”; age structure helps tell “who needs what.”

Correct answer: A. When development is concluded only from the growth rate

The direct answer is A: development may be misunderstood when it is judged only from the population growth rate. Growth rate tells how quickly the population changes, usually as a percentage over a period. It does not by itself show the quality of education, health care, income, housing, employment or public services. Development is a wider idea and needs several social and economic indicators. A high growth rate may put pressure on services, but its effect depends on resources, planning and people’s conditions. A low rate does not automatically prove that development is high. Options B, C and D are better approaches because they add relevant evidence about people’s lives and regional differences. Memory cue: growth rate is one indicator, not a complete development report.

Correct answer: A. Because the existing large population creates demand for education, health, transport and other services

The direct answer is A: a large existing population continues to need education, health care, transport, water, housing and other services. A growth rate measures the speed of change; it does not describe the total number of people already living in the area. A low rate may mean that the population is growing slowly, remaining nearly stable, or changing only slightly, depending on the exact figure. Even without rapid growth, millions of residents may require schools, hospitals, roads and public facilities every day. Option B is wrong because low growth does not mean zero population. Option C is wrong because demand depends strongly on total population and also on age structure and service use. Option D is wrong because low growth is not always rapid decline. Memory cue: separate “how many people exist” from “how fast the number changes.”

Correct answer: A. When population growth exceeds resource capacity

Direct answer: A. Carrying capacity is the level of population that the available resources and services of an area can support for a given time under stated conditions. When population grows faster than the capacity of land, water, food, housing, health care, or other services, the gap between population demand and available support becomes visible. This makes the relationship between growth and carrying capacity clearest. Option A is correct because it presents a direct excess of population pressure over resource capacity. Option B is unsuitable because truly infinite resources would remove the limiting comparison. Option C describes falling demand, which may reduce pressure rather than clearly show excess growth. Option D gives no population and therefore no population pressure. Memory cue: carrying capacity is a limit, so compare population demand with available support.

Correct answer: A. City's total population and service demand may increase

Direct answer: A. Natural increase is the difference between births and deaths. Even when that difference is small, continued in-migration adds people from outside the city. If arrivals remain greater than departures, the city’s total population can grow over time. More residents may increase demand for housing, schools, transport, water, health care, and employment, although the exact effect depends on planning and available capacity. Option A is correct because it connects continuing in-migration with total population and service demand. Option B is wrong because high in-migration does not make the population zero. Option C is wrong because arrivals directly change population size and composition. Option D is wrong because a higher death rate does not automatically follow from in-migration. Memory cue: total population change combines natural increase with net migration.

Correct answer: A. Not only total growth but growth of child age group should also be seen

Direct answer: A. Education planning is closely related to the number and distribution of school-age children, not merely to total population. A city may have a large total population but relatively few children, while another area with a smaller total may have many children. Migration and changing birth patterns can also alter the child-age group even when total population growth is small or stable. Option A is correct because it asks planners to examine both overall growth and the relevant child age group. Option B is wrong because older people do not represent the main immediate school demand. Option C is wrong because age structure is essential for estimating school needs. Option D is wrong because a stable total can hide changes in age composition or movement between neighbourhoods. Memory cue: for schools, count children, not just people.

Correct answer: A. Pressure may feel controlled or lower

Direct answer: A. Population growth increases demand, but pressure depends on demand compared with the available supply of resources and services. If water, housing, transport, schools, health care, and other facilities grow faster than the population, the amount available per person may improve or remain adequate. As a result, crowding and shortage pressure may be controlled or may feel lower, even though the population is still increasing. Option A is correct because it recognises this demand-supply relationship. Option B is wrong because pressure is not automatically infinite. Option C is opposite to the situation described; faster service growth does not mean services immediately end. Option D is wrong because lower pressure does not mean population growth becomes zero. Memory cue: pressure depends on the balance between population demand and service capacity.

Correct answer: A. When the working-age population increases and education, skills, and employment opportunities are available

Direct answer: A is correct. A demographic dividend is the possible economic benefit that can arise when the proportion of people in the working-age group becomes relatively large compared with dependent children and older people. However, a large working-age population is only an opportunity, not an automatic benefit. People need education, useful skills, good health, and suitable jobs so that they can work productively and support economic development. Option A includes both the favourable age structure and the conditions needed to use it. B is wrong because a population without education and skills may not find productive work. C is wrong because disappearing jobs turn the large workforce into an economic burden rather than a dividend. D is wrong because a population made up mainly of dependants increases the support burden. Memory cue: demographic dividend means working-age people plus opportunities, not working-age people alone.

Correct answer: A. Sanitation problems and pollution pressure may increase

Direct answer: A is correct. A fast-growing population usually produces more household and commercial waste because more people consume goods and use services. If collection, treatment, recycling, and safe disposal are weak, waste can accumulate in streets, drains, open spaces, or water bodies. This may create sanitation problems and increase pollution pressure on land, air, and water. Option A correctly connects population growth with the capacity of waste management systems. B is wrong because waste does not disappear without collection and treatment. C is wrong because weak management cannot make environmental pressure zero; it generally increases it. D is wrong because a larger population normally requires more water for drinking, cleaning, and other uses, not less. Memory cue: more people plus weak management usually means more waste, pollution, and pressure on services.

Correct answer: A. When the share of the elderly population is increasing

Direct answer: A is correct. A population growth rate describes how quickly the total population is changing, but it does not show the complete age composition of that population. If the proportion of elderly people increases, demand may rise for regular check-ups, medicines, treatment of long-term conditions, and other health services, even when the total population is growing slowly. A correctly focuses on age structure. B is wrong because an area with no residents has no resident demand for local services. C is not a suitable explanation: if every age group is declining, the statement gives no reason for rising demand. D is self-contradictory because zero need cannot produce increased demand. Memory cue: growth rate tells how fast population changes; age composition helps show what services people may need.

Correct answer: A. A growing population can increase land demand for housing, roads, and services

Direct answer: A is correct. As population grows, people need places to live, travel, study, work, and receive services. Consequently, land may be used for houses, roads, schools, hospitals, markets, and other facilities. This can change the pattern of land use, although the exact change depends on planning, available land, local conditions, and environmental rules. A states this relationship accurately without claiming that every place changes in exactly the same way. B is wrong because more people generally create additional demands for space and facilities. C is wrong because population needs can influence how land is used. D is wrong because population growth does not only change river courses; it can affect settlement and built-up land. Memory cue: more people create more needs, and more needs can change land use.

Correct answer: A. The gap between the birth rate and the death rate

Direct answer: A is correct. Natural increase is determined by the difference between the birth rate and the death rate. Suppose the birth rate falls from 30 to 24 per thousand, while the death rate falls from 15 to 8 per thousand. The birth rate is lower than before, but the gap changes from 15 to 16 per thousand, so natural increase can become slightly larger. The exact figures are not given in the question, so the correct method is to examine the gap. B is wrong because the birth rate alone cannot show natural increase. C is wrong because area does not calculate the difference between births and deaths. D is unrelated to this population-growth calculation. Memory cue: natural increase depends on birth rate minus death rate, not on either rate alone.

Correct answer: A. Planning local schools and vaccination when the child population rises at ward level

Direct answer: A is correct. A local scale examines a small area, such as a ward, rather than relying only on a national or state average. If the number of children rises in a particular ward, local authorities can use that information to estimate the need for classrooms, teachers, learning materials, vaccination teams, and health outreach. A connects local evidence with a practical service decision. B is wrong because a national average can hide important differences between wards. C is wrong because ignoring local growth may leave services insufficient or poorly placed. D is wrong because population data are essential for estimating demand and planning fairly. Local planning should still use reliable data and broader guidelines. Memory cue: national averages describe broad patterns; local data guide local action.

Correct answer: A. When the number of job seekers rises but local employment does not increase

Direct answer: A is correct. When the number of people seeking work grows faster than the supply of suitable local jobs, some people may leave their area to search for employment, education, or better opportunities elsewhere. This movement is migration; when people move out of their place of origin, it may be described as out-migration. A correctly identifies the imbalance that can create pressure to move. B is generally a situation with better local opportunity, so it does not give the stated reason for increased migration caused by lack of jobs. C is wrong because suitable local work reduces the need to move for employment. D is wrong because without job seekers there is no employment-driven migration pressure. Migration has many causes, so the word “can” is important. Memory cue: too many job seekers and too few local jobs may encourage movement.

Correct answer: B. क्योंकि कौशल की कमी रोजगार-क्षमता घटा सकती है

Direct answer: B is correct. A young population can become a demographic dividend only when many young people are healthy, educated, trained and able to find productive work. Rapid population growth increases the number of young people, but numbers alone do not create jobs or income. If schooling is poor and vocational, technical or professional training is insufficient, young people may not possess the skills employers need. This can lead to unemployment, underemployment and dependence, so the possible economic benefit becomes smaller. A is wrong because youth do not automatically create employment merely by being young. B is correct because employability depends partly on relevant knowledge and skills. C is wrong because a high birth rate adds population but does not teach skills. D is wrong because migration may continue and is not the main reason for the reduced benefit. Memory cue: demographic dividend needs both a young workforce and investment in education, health and skills.

Correct answer: A. दर कम हो, पर आधार जनसंख्या बहुत बड़ी हो

Direct answer: A is correct. A growth rate is a percentage or proportion applied to a base population. Even a low rate can produce a large absolute increase when the base population is very large. For example, one percent of ten million is far more people than one percent of one hundred thousand. The additional people may require schools, hospitals, housing, water, food, transport and jobs, so the practical pressure can be high despite the apparently low rate. B suggests no growth and a small base, so pressure from increase is limited. C describes decline and outward migration, not the highest growth pressure. D indicates natural increase may be zero, although migration could still change the total; it does not by itself show the highest pressure. Memory cue: always read rate together with the base and calculate the actual addition.

Correct answer: B. वृद्धि दर अब भी धनात्मक हो सकती है

Direct answer: B is correct. A falling birth rate means that births are occurring at a lower rate than before; it does not automatically mean that births are fewer than deaths or that the total population is declining. If the birth rate remains higher than the death rate, or if net in-migration adds people, the total population can continue to rise. Thus the population growth rate may still be positive, although it may be slowing. A is wrong because declining birth rate and declining population are not identical. B is correct because positive growth simply means that additions from births and migration are greater than losses from deaths and out-migration. C is wrong because continued growth does not require a zero death rate. D is wrong because migration may contribute to the increase and cannot be dismissed without data. Memory cue: a falling rate can still be a positive rate.

Correct answer: A. क्योंकि आधार जनसंख्या अलग हो सकती है

Direct answer: A is correct. Absolute growth is the actual number added to a population, while the growth rate usually expresses that addition as a percentage of the starting or base population. The same numerical increase can therefore represent very different rates. For example, an addition of 10,000 people is 10 percent of a base of 100,000 but only 1 percent of a base of 1,000,000. If planners compare only the number added, they may wrongly conclude that the two populations are growing equally fast. A is correct because different base populations change the percentage interpretation. B is wrong because a census or population estimate can be associated with specific years. C is wrong because birth rates need not be equal. D is wrong because mortality is relevant to population change. Memory cue: percentage growth always needs a denominator—the base population.

Correct answer: A. When total population is large and services expand slowly

Direct answer: Option A is correct. A growth rate tells us how quickly population changes; it does not tell us that the existing population has become small. If a region already has a very large population, even a slower positive growth rate can continue adding people. These people still need water, food, housing, schools, hospitals, transport, jobs and energy. If services and infrastructure expand more slowly than demand, pressure on resources can rise. Option B cannot create resource pressure because a population of zero has no human demand. Option C is not a normal explanation of rising pressure and gives no reason for increasing demand. Option D removes the condition of scarcity, so pressure would not rise because resources would be unlimited. Memory cue: slower growth is not the same as population decline; demand depends on both population size and service capacity.

Correct answer: A. After it population growth trend moved clearly upward

Direct answer: Option A is correct. In the study of India’s population history, 1921 is called the year of the great divide because the long-term population trend changed around this point. Before 1921, population growth was slow and irregular, with periods of stagnation or decline. After 1921, the general trend became a more consistent increase, although the rate was not identical in every census period. This makes 1921 a demographic turning point, not a claim that population suddenly became infinite or that every later year had exactly the same rate. Option B is absurd because India’s population did not become zero. Option C is wrong because censuses continued after 1921. Option D is wrong because births did not end. Memory cue: “great divide” means a major change in the direction of the population trend, not a literal division of people.

Correct answer: A. Because a small base population can make the ratio look larger

Direct answer: A is correct. Percentage growth compares the increase with the starting population: percentage growth = (increase ÷ original population) × 100. If a small state has 10 lakh people and gains 1 lakh, its growth is 10%. If a large state has 100 lakh people and gains 5 lakh, its growth is only 5%, even though the large state gained more people in absolute numbers. Therefore, a small base can make a moderate numerical increase look large as a percentage. A is correct because it explains this base effect. B is wrong because deaths can occur in both small and large states. C is wrong because large states also have births. D is wrong because percentage calculations do use population numbers. Memory cue: always ask, “Increase compared with which base?”

Correct answer: A. Growth shows future demand and density shows spatial pressure

Direct answer: A is correct. Population growth tells us how quickly the number of people is changing over time. Population density tells us how many people live in a unit of area, so it shows how people are distributed and where pressure may be concentrated. When studied together, growth helps planners estimate future needs, while density helps identify places that may need more housing, water, schools, transport, hospitals or jobs. A is correct because it combines the time dimension of growth with the spatial dimension of density. B is wrong because birth rate is only one demographic measure. C is wrong because neither growth nor density is simply a migration rate. D is wrong because both indicators are useful for planning. Memory cue: growth means change through time; density means concentration in space.