CBSE · NCERT · Class 10 Social Science · Chapter 18

NCERT Solutions: Class 10 Social Science Chapter 18 - Economics: Development

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Chapter-wise NCERT intext questions and exercise answers for Economics: Development, grounded in the official textbook.

Questions are taken verbatim from the NCERT textbook; answers were grounded against the chapter's content during generation. Items needing review are marked.
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EXERCISES 12
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1EXERCISES12 questions
Q.1Development of a country can generally be determined byv
  1. (i). its per capita income
  2. (ii). its average literacy level
  3. (iii). health status of its people
  4. (iv). all the above
Solution

Development is multidimensional and includes income, education and health.

Answer:

(iv) all the above

Q.2Which of the following neighbouring countries has better performance in terms of human development than India?v
  1. (i). Bangladesh
  2. (ii). Sri Lanka
  3. (iii). Nepal
  4. (iv). Pakistan
Solution

The chapter’s human-development comparison places Sri Lanka above India.

Answer:

(ii) Sri Lanka

Q.3Assume there are four families in a country. The average per capita income of these families is Rs 5000. If the income of three families is Rs 4000, Rs 7000 and Rs 3000 respectively, what is the income of the fourth family?v
Solution

Total income = 4 × Rs 5000 = Rs 20,000. The known incomes total Rs 14,000, so the fourth income is Rs 20,000 − Rs 14,000 = Rs 6000.

Answer:

Rs 6000

Q.4What is the main criterion used by the World Bank in classifying different countries? What are the limitations of this criterion, if any?v
Solution

Grounded in ‘Income and Other Criteria’.

Answer:

The World Bank mainly uses per capita income, calculated by dividing a country’s total income by its population. It enables comparison between differently sized populations, but an average hides how income is distributed. Countries with the same per capita income may have very different inequality, health, education, security and public services. It also does not measure sustainability or non-material goals such as dignity and freedom.

Q.5In what respects is the criterion used by the UNDP for measuring development different from the one used by the World Bank?v
Solution

Grounded in the human-development comparison.

Answer:

The World Bank classification relies chiefly on per capita income. The UNDP’s Human Development approach combines income with health and education, represented through measures such as life expectancy and schooling. It therefore asks not only how much income a country has, but whether people live long, knowledgeable and decent lives.

Q.6Why do we use averages? Are there any limitations to their use? Illustrate with your own examples related to development.v
Solution

Sample example applying the chapter’s average-income discussion.

Answer:

Averages summarise a large population in one comparable figure and adjust totals for different population sizes. Their limitation is that they conceal distribution. For example, two villages may each average Rs 10,000 per person: in one, everyone earns near that amount; in the other, one rich household earns most income while the rest are poor. Similarly, average school attendance can hide a large gender or caste gap. Averages should therefore be read with distributional and social indicators.

Q.7Kerala, with lower per capita income has a better human development ranking than Haryana. Hence, per capita income is not a useful criterion at all and should not be used to compare states. Do you agree? Discuss.v
Solution

Balances the usefulness and insufficiency of income.

Answer:

I do not agree that per capita income is useless. Income affects people’s ability to buy necessities and governments’ capacity to provide services, so it remains relevant. But Kerala’s stronger literacy, health outcomes and public facilities show that income alone is insufficient. Per capita income should be combined with education, life expectancy, nutrition, equality and access to public services to compare development fairly.

Q.8Find out the present sources of energy that are used by the people in India. What could be the other possibilities fifty years from now?v
Solution

Open-ended model response consistent with the chapter’s sustainability theme.

Answer:

People currently use coal-based electricity, petroleum fuels, natural gas, hydropower, nuclear energy, firewood, dung cakes and growing amounts of solar, wind and biogas. Fifty years from now, a model expectation is much greater reliance on solar and wind supported by storage, expanded grids, green hydrogen, safer nuclear power and electrified transport. Efficiency and decentralised renewable systems could reduce fossil-fuel use, though the transition depends on technology, cost and policy.

Q.9Why is the issue of sustainability important for development?v
Solution

Grounded in ‘Sustainability of Development’.

Answer:

Development that exhausts groundwater, minerals, forests or clean air can raise present output while reducing future wellbeing. Many resources are finite or recharge slowly, and pollution crosses state and national borders. Sustainability is therefore necessary to meet current needs without destroying the capacity of future generations to meet theirs. It requires conservation, renewable alternatives, efficient use and fair access.

Q.10“The Earth has enough resources to meet the needs of all but not enough to satisfy the greed of even one person”. How is this statement relevant to the disscusion of development? Discuss.v
Solution

Applies the quotation to equitable and sustainable development.

Answer:

The statement distinguishes legitimate needs from unlimited accumulation. If development means ever-rising consumption by a few, resources are depleted, pollution grows and others lose access to basic requirements. True development should improve wellbeing broadly while using resources within ecological limits. Equity, efficiency, recycling and renewable energy allow needs to be met; greed turns development into exclusion and leaves future generations with scarcity.

Q.11List a few examples of environmental degradation that you may have observed around you.v
Solution

Sample local response grounded in the chapter’s environmental concerns.

Answer:

Possible observations include polluted drains and rivers, plastic waste in open spaces, smoke from traffic and waste burning, declining groundwater, loss of trees to construction, soil erosion, noise from vehicles and generators, and reduced local biodiversity. These examples show degradation of water, air, land and habitats.

Q.13The following table shows the proportion of adults (aged 15-49 years) whose BMI is below normal (BMI <18.5 kg/m2) in India. It is based on a survey of various states for the year 2019-21. Look at the table and answer the following questions. (i) Compare the nutritional level of people in Kerala and Madhya Pradesh. (ii) Can you guess why around one-fifth of people in the country are undernourished even though it is argued that there is enough food in the country? Describe in your own words.v
Solution

Part (i) reads the printed data; part (ii) applies the chapter’s distinction between availability and development outcomes.

Answer:

(i) Kerala has much lower undernutrition: 8.5 per cent of men and 10 per cent of women have below-normal BMI, compared with 28 per cent of both men and women in Madhya Pradesh. (ii) National food availability does not guarantee household access. Low incomes, unequal distribution, insecure work, high food prices, poor sanitation, disease, gender discrimination and weaknesses in public distribution can leave people unable to obtain or absorb a nutritious diet.