9th Social Science - Book Back Answers - Economics Unit 1

9th - Social Science - Book Back Answers - Economics Unit 1 - English Medium

Tamil Nadu Board 9th Standard Social Science - Economics Unit 1: Book Back Answers and Solutions

This post covers the book back answers and solutions for Unit 1 – Economics from the Tamil Nadu State Board 9th Standard Social Science textbook. These detailed answers have been carefully prepared by our expert teachers at KalviTips.com.

We have explained each answer in a simple, easy-to-understand format, highlighting important points step by step under the relevant subtopics. Students are advised to read and memorize these subtopics thoroughly. Once you understand the main concepts, you’ll be able to connect other related points with real-life examples and confidently present them in your tests and exams.

By going through this material, you’ll gain a strong understanding of Economics Unit 1 along with the corresponding book back questions and answers (PDF format).

Question Types Covered:

1 Mark Questions: Choose the correct answer, Fill in the blanks, Identify the correct statement, Match the following
2 Mark Questions: Answer briefly
3, 4, and 5 Mark Questions: Answer in detail

All answers are presented in a clear and student-friendly manner, focusing on key points to help you score full marks.

All the best, Class 9 students! Prepare well and aim for top scores. Thank you!

Topic: Unit 1. UNDERSTANDING DEVELOPMENT: PERSPECTIVES, MEASUREMENT AND SUSTAINABILITY

I. Choose the correct Answer

Question 1.
Assertion (A): Development increases the quality of life.
Reason (R): People will have higher incomes, better education, better health and nutrition, less poverty.
(a) Both (A) and (R) are true and (R) explains (A)
(b) Both (A) and (R) are true and (R) does not explain (A)
(c) (A) is correct and (R) is false
(d) (A) is false and (R) is true
Answer Key:
(a) Both (A) and (R) are true and (R) explains (A)

Question 2.
The term ‘Human resources’ refers to ___________
(a) investment on poor people
(b) expenditure on agriculture
(c) investment on assets
(d) collective abilities of people
Answer Key:
(d) collective abilities of people

Question 3.
For comparing development between countries, their is considered to be one of the most important attributes.
(a) growth
(b) income
(c) expenditure
(d) savings
Answer Key:
(b) income

Question 4.
___________ is considered a true measure of national income.
(a) GNP
(b) GDP
(c) NNP
(d) NDP
Answer Key:
(c) NNP

Question 5.
The __________ income is also called per capita income.
(a) average
(b) total
(c) people
(d) monthly
Answer Key:
(a) average

Question 6.
Which one of the following country is not a G-8 country?
(a) Japan
(b) Canada
(c) Russia
(d) India
Answer Key:
(d) India

Question 7.
Which one of the following country is not a member of SAARC?
(a) India
(b) Pakistan
(c) China
(d) Bhutan
Answer Key:
(c) China

Question 8.
Assertion (A): The Net National Product (NNP) is considered as a true measure of national output.
Reason (R): It is also known as national income.
(a) Both (A) and (R) are true and (R) explains (A)
(b) Both (A) and (R) are true and (R) does not explain (A)
(c) (A) is correct and (R) is false
(d) (A) is false and (R) is true
Answer Key:
(a) Both (A) and (R) are true and (R) explains (A)

Question 9.
Assertion (A): Human resource is necessary for the progress of any country.
Reason (R): Investment in education and health of people can result in a high rate of returns in the future for a country.
(a) Both (A) and (R) are true and (R) explains (A)
(b) Both (A) and (R) are true and (R) does not explain (A)
(c) (A) is correct and (R) is false
(d) (A) is false and (R) is true
Answer Key:
(a) Both (A) and (R) are true and (R) explains (A)

Question 10.
The Human Development Index (HDI) does not take into account the following dimension in its calculation
(a) Gender
(b) Health
(c) Education
(d) Income
Answer Key:
(a) Gender

Question 11.
Among the following states which state have the literacy rate (2011) higher than national average
(a) Andhra Pradesh
(b) Uttar Pradesh
(c) Tamil Nadu
(d) None of these
Answer Key:
(c) Tamil Nadu

Question 12.
Sex-ratio means
(a) the ratio between adult-male and adult female in a population
(b) the ratio between female and male in a population
(c) the relationship between male of female
(d) the number of females per thousand males
Answer Key:
(d) the number of females per thousand males

Question 13.
Inter-generational equality is ensured under the process of
(a) Industrial Progress
(b) Economic development
(c) Sustainable development
(d) Economic growth
Answer Key:
(c) Sustainable development

Question 14.
Find the odd one
(a) Solar energy
(b) Wind energy
(c) Paper
(d) Natural gas
Answer Key:
(c) Paper

Question 15.
________ is the state with highest installed solar capacity in India.
(a) Tamil Nadu
(b) West Bengal
(c) Kerala
(d) Andhra Pradesh
Answer Key:
(a) Tamil Nadu

Question 16.
________ resources are those which will get exhausted after years of use.
(a) Natural
(b) Renewable
(c) Non-Renewable
(d) New
Answer Key:
(c) Non-Renewable

Question 17.
Thermal plant emits large quantity of _______, which pollutes the environment.
(a) Oxygen
(b) Nitrogen
(c) Carbon
(d) Carbon dioxide
Answer Key:
(d) Carbon dioxide

II. Fill in the blanks

1. Economic progress of any country is known as __________
2. The head quarters of HRD Ministry is in __________
3. The state having the highest literacy rate in India is __________
4. Human Development Report of the world prepared and released by __________
5. Groundwater is an example of resource __________
6. The book An Uncertain Glory was written by __________

Answer Key:

1. Economic Development
2. Shastri Bhavan, New Delhi
3. Kerala
4. UNDP (United Nation Development Programme)
5. Renewable
6. Prof. Amartya Sen

III. Match the following

1. Development            – (i) Wild life Protection Act
2. Human resource    – (ii) Renewable resources
3. Solar energy            – (iii) Part of daily life
4. 1972                          – (iv) Education

Answer Key:

1. Development           – (iii) Part of daily life
2. Human resource     – (iv) Education
3. Solar energy           – (ii) Renewable resources
4. 1972                       – (i) Wild life Protection Act

IV. Answer the following briefly

1. What do you mean by development?

Development refers to the progress of a particular field or a particular person in a particular direction which differs from time to time, person to person and on other various factors.

2. What are the indicators of development?

Net National Product (NNP)
Per Capita Income (PCI)
Purchasing Power Parity (PPP)
Human Development Index (HDI)

3. Why NNP is not considered as a useful measure to compare a country's development with other countries?

Countries have different populations.
Comparing total income will not be a suggestive way of what an average person earns.

4. Why human resources is considered as the foremost resource of any country?

The term Human Resources refers to the collective abilities of people which can be utilized in the production sector.

5. Expand the following i) PPP ii) HDI.

PPP - Purchasing Power Parity.
HDI - Human Development Index.

6. Expand the following i) NNP ii) PCI

NNP - Net National Product.
PCI - Per Capita Income.

7. What is 'Solar Power'?

Solar power is the conversion of energy from sunlight into electricity using photovoltaic cells.

V. Answer all the questions given under each caption

1. Discuss the policies for sustainable development.

The main aim of the sustainable development is to develop economy without causing more damage to environment.
Using renewable resources.
We should keep in mind about our future generation while using non- renewable energies.
We should move from non- renewable energy to renewable energy.
It is responsible of each and every individuals.

2. Describe in detail about environmental policies in India.

Environmental policies in India have been evolved considerably over the past three decades.
These policies have covered a wide range of issues such as air, water pollution, waste management and bio diversity conservation.
India faces challenges in economic development which has to be achieved with limited resources, minimum externalities and with uncertain climate.
The Supreme Court of India has interpreted and introduced new changes in environment protection.

3. Differentiate between renewable and non renewable resources.

RENEWABLE RESOURCES

NON-RENEWABLE RESOURCES

* These resources take a short time for renewal.

* Renewable resources are pollution free.

* Ex., solar energy, wind energy, water.

*Millions of years are needed for the formation of these resources.

* Non - renewable resources pollute.

* Ex. petroleum, natural gas, metal.

4. Mention any five environmental acts and their action.

National Green Tribunal Act, 2010 - Protecting environment and conservation of forests and other Natural resources.
Forest (Conservation) areas Act, 1980 - Check deforestation and encourage afforestation of non-forest
Water (Prevention and Control Of pollution) Act, 1974 - Maintenance,restoration and insures quality of all types of surface water.
The Environment (Protection)Act, 1986 - Protection and improvement of the environment.