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

9th Social

II. Fill in the blanks

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III. Find out the correct statement

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IV. Match the following

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V. 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.

VI. 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.