Chapter 2 Acids, Bases and Salts MCQ Questions paper

Acids, Bases & Salts – Class 10 Science Chapter 2 MCQ PDF Download

Download the Class 10 Science Chapter 2 – Acids, Bases & Salts MCQ PDF for free! This PDF includes important multiple-choice questions (MCQs) based on NCERT and board exam patterns, helping students with quick revision and exam preparation. Ideal for CBSE, ICSE, and state boards. 

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chapter 1 Chemical Reactions and Equations MCQ Questions paper

Chemical Reactions & Equations – Class 10 Science Chapter 1 MCQ PDF Download Get the Class 10 Science Chapter 1 – Chemical Reactions & Equations MCQ PDF for free! 

This PDF contains important multiple-choice questions (MCQs) based on NCERT and board exam patterns. Perfect for CBSE, ICSE, and state board students, this resource helps in quick revision, self-assessment, and exam preparation. Download now to boost your Science exam score!

CLASS 10TH INFORMATION TECHNOLOGY PART A (EMPLOYABILITY SKILLS) UNIT 1 - COMMUNICATION SKILLS CHAPTER 2 - COMMUNICATION CYCLE

CLASS 10TH INFORMATION TECHNOLOGY PART A (EMPLOYABILITY SKILLS) UNIT 1 - COMMUNICATION SKILLS CHAPTER 2 - COMMUNICATION CYCLE (PART 2) Defining Feedback Feedback is an essenal factor in the process of the communicaon cycle. It is the response or reacon of the receiver to the sender aſter perceiving or understanding the message. Here, the receiver becomes the sender and vice versa. Aſter gaining the receiver's response, the sender takes further acons, thereby compleng the communicaon cycle. Example The monitor of your class has been instructed by the teacher to explain the rules of sing in the library. She explains each rule one by one. You all listen to her carefully and follow the rules. As a result, the class gets the reward of being the most disciplined class in school. The recognion reveals the impact of the feedback. Based on the feedback from the receiver, the sender can evaluate the effectiveness of the message. Example Your teacher guides you about the place to keep your skates in the classroom aſter the acvity gets over. You do not listen carefully and keep it carelessly in between the passage. As a result, one of your classmates hurts himself. This reveals that communicaon was not effecve. If you had carefully paid aenon to your teacher's instrucons, you would have kept the skates at the designated place, and your classmate would have been saved from injury. Feedback can be positive or negative. Posive feedback indicates that the sender can connue his communicaon in the same manner as before. Negave feedback, on the other hand, suggests a need for change in the mode of communicaon. If the receiver gives appropriate feedback to the sender, the sender can modify or remodel his strategy of communicaon. If no feedback is given, it indicates agreement or reluctance in accepng ideas.

CLASS 10TH INFORMATION TECHNOLOGY Importance of Feedback Feedback is required to connue the process of acve communicaon. It can be effecve only when it is heard, interpreted, and accepted. It determines the way forward. Feedback helps people to get on track. It guides them to know how others perceive their performance. Feedback is a vital part of effecve learning as it gives clear guidance to the students on how to improve their knowledge and performance. It can enhance a student's confidence, self-awareness, and enthusiasm for learning. Depending on the feedback, one can take the right acon for the next step. Importance of Feedback Effective feedback must...  Be linked to the work the student is doing and not measured against other student's progress  Be linked to the learning intenon and success criteria  Include specific areas of improvement and provide next steps for the students  Be delivered in accessible ways and at an appropriate me so that the students are able to act upon it Let us understand the importance of feedback with the help of an example. Example During a clay modeling period, the teacher was giving feedback on the performance of students. Rohan, one of the students, was disheartened as he could not make a model of an aeroplane even aſter it was demonstrated to him 4-5 mes. The teacher observed him and figured out the problem. She said, "Rohan, you can do it. It's just that you need to do it carefully with a focused mind. I have full confidence in you. Try again!" Result: With such posive feedback from the teacher, Rohan experienced a surge in his confidence. He did well this me. Everybody clapped loudly as his efforts were laudable. Feedback is important in the following ways:

CLASS 10TH INFORMATION TECHNOLOGY Basis of Problem-Solving: When the receiver gets a message, it is up to him to agree with the sender or not. If the receiver disagrees with the sender, it can cause a problein. In this case, the feedback can help the sender jusfy the response of the receiver. It enables the sender to interpret the behaviour of the receiver and take the next step accordingly. Hence, it serves as the basis of problem-solving. Effecve Listening: Feedback results into effecve listening. When feedback is given, the sender becomes cauous of the message sent by him. He re-analyses his message and correlates it with the feedback. This enables him to understand if the communicaon has been successful. Can Motivate: Students need movaon to study and to perform the given task well. Right feedback given at the right me can do wonders for them. It can show them the right path that needs to be followed to lead them towards their desired goal. Can Improve Performance: Good performance is what everybody strives for. it can take you to new heights. For that, you need to overcome your fears, shortcomings, and worries. Good feedback enables you to overcome your fears and accomplish your goals age and determinaon. with courage Tool for Continued Learning: Feedback plays a vital role in learning. Learning is an ongoing process. Proper feedback prevents you from geng distracted and pushes you to remain aligned to your goals. It helps you to focus on the improvement areas and learn connuously, which in turn, opens a new world of opportunies. Descriptive Feedback Descripve feedback includes specific informaon in the form of wrien comments or verbal conversaons that help the learner understand what he needs to do in order to improve. According to Black, Harrison, Lee & Wiliam (2003), "Descripve Feedback is the most powerful tool for improving students' learning." In other words, it enables students to learn about their current achievement along with the weaknesses which need to be improved. It includes suggesons to help them achieve their objecves. It also provides a direcon for the students to idenfy the steps taken to fulfil their goals. However, it does not include grades, marks, or coded symbols. Benefits of Descriptive Feedback Descripve Feedback should be focused on how well the task has been accomplished along with providing suggesons to improve further. It offers the following benefits:

CLASS 10TH INFORMATION TECHNOLOGY • Provides useful informaon to students about their learning. • Fills the gap between their present level of performance and the learning goal. • Enables the students to self-assess and set their goals accordingly. When the students get informave feedback about their work, they get a chance to analyse how they have performed, which concepts they have understood clearly, and which concepts need improvement. They can make an outline of the areas which need improvement and proceed further with more clarity. Factors Essential to Giving Descriptive Feedback The following points should be taken into consideraon to make descripve feedback effecve: Goal-Oriented: Feedback should be given keeping the aim of learning in mind, as students work towards achieving the learning objecve. Many a me, students are unaware of the learning aim. They should know what their learning aim is and how they are going to achieve it. Actionable: When students have knowledge but do not know where to apply it, they lose interest in learning. Hence, their experience should be put to use by giving them specific direcon. User-Friendly: The feedback should be given in an easy to understand language so that students can comprehend what they are supposed to do to achieve the learning aim. Otherwise, the feedback provided to them will prove to be worthless. Timely: The students should receive the feedback on me, i.e., when it is sll possible for them to put it to use. The feedback needs to be given to them when they are sll striving for their goal, not when they have already achieved it. Continuous: Feedback should be given connuously, along with instrucons. This enables the students to remain focused on their goal. Consistent: The students should be given a consistent feedback. Otherwise, they will not be able to rely on it, and in turn, will not be able to follow it. Specific and Non-Specific Feedback Specific Feedback Specific feedback provides detailed informaon about something parcular, relang to a task or the individual's performance. It is beneficial as it gives the receiver something substanal to think about and work on the areas which need improvement.

CLASS 10TH INFORMATION TECHNOLOGY For example, "It was impressive that you started with a queson to hook the listeners. I like it." Note that here this tacc can be replicated while narrang the stories in future to leave a lasng impression on the listeners' mind. It provides guideline for the future. Non-Specific Feedback Non-specific feedback, in general, gives a vague response to the receiver. It may not be of much help, as it does not guide the receiver properly to achieve the desired goal. It gives the impression that the sender has not given a thoughul response. For example, "Great job!" The issue with the above remark is that it is not specific. It does not indicate what went right that led to success. It also does not provide any detail about how to repeat this success story with future projects. Assessment Time A. Select the correct option. 1. _________is a process of sharing informaon between two or more people. a. Descripon b. Communicaon c. Transion d. Feedback b. Communication 2. When a receiver gets a message, he sends back a a. Card b. Mobile c. Response d. Gesture c. Spoken words

CLASS 10TH INFORMATION TECHNOLOGY 3. the_________ response, the more effecve is the communicaon cycle. a. Slower b. Quicker c. Clear d. Faster b. Quicker Assessment Time B. Fill in the blanks. 1. The Communicaon process enlists the steps we take to comprehend each other properly. 2. Right feedback given at the right me can lead the students towards their Desired goal 3. Specific feedback gives a vague response to the receiver. 4. Encoding refers to how the sender wishes to communicate the message. 5. Non-specific feedback provides detailed informaon relang to a task or the individual's Performance. hps://easyclass10.blogspot.com/ hps://chat.whatsapp.com/CrpvX8RgvRkHmtCLYw3LhK THANK YOU

PART A (EMPLOYABILITY SKILLS) UNIT 5: GREEN SKILLS CHAPTER 12: SUSTAINABLE DEVELOPMENT

PART A (EMPLOYABILITY SKILLS) UNIT 5: GREEN SKILLS CHAPTER 12: SUSTAINABLE DEVELOPMENT

CLASS 10TH INFORMATION TECHNOLOGY PART A (EMPLOYABILITY SKILLS) UNIT 5: GREEN SKILLS CHAPTER 12: SUSTAINABLE DEVELOPMENT[Type the document title] Introduction Sustainable Development Humans have strived for development ever since the beginning of civilisaon. Development is considered a gradual progress for improvement in the economic, social, polical, and cultural systems. However, the impact of this development on the environment and the natural resources was not considered in the inial years. This approach has resulted in the rapid depleon of these resources and connues to threaten the Survival of our future generaons. Evolution of Sustainable Development The concept of sustainable development received its first major internaonal recognion in 1972 at the UN Conference on the Human Environment (UNCHE) held in Stockholm, Sweden. The term was not used explicitly, but the internaonal community agreed that both development and environment could be managed in a mutually beneficial manner. In 1983, the United Naons created the World Commission on Environment and Development, which was later known as the Brundtland Commission The Prime Minister of Norway at the me, Gro Harlem Brundtland, was appointed the chairperson of the commission. The organisaon aimed at idenfying the sustainability problems worldwide, raising awareness about them, and suggesng the implementaon of soluons at a global level. Definition of Sustainable Development In 1987, the Brundtland Commission released-the report Our Common Future, commonly called the Brundtland Report'. The report included one of the most widely recognised definions of sustainable development: Simply put, sustainable development is a long-term, integrated approach to development; addressing economic, environmental, and social issues while avoiding excess consumpon of vital natural resources. Sustainability seeks to protect our natural environment, human well-being and ecological health while driving innovaon and not compromising our way of life.

CLASS 10TH INFORMATION TECHNOLOGY "Sustainable development is development that meets the needs of the present without compromising the ability of future generaons to meet their own needs." It contains two key concepts The concept of 'needs', in parcular the essenal needs of the world's poor, to which priority should be given. overrisomic The idea of limitaons imposed by the state of technology and-social organizaon on the environment's ability to meet the present and future needs. World Commission on Environment and Development, Our Common Future ((1987) IntroducoConcept of Sustainable Development The Brundtland Commission's definion and approach to environmental conservaon was completely different from the convenonal one. Let us look at some of the major differences: Principles of Sustainable Development The principles of sustainable development are based on the integraon of environmental, social, and economic concerns into all aspects of decision making. As against unchecked development, sustainable development is a carefully planned strategy that promotes growth and efficient usage of resources while considering immediate and long-term benefits The environment was considered a separate enty. detached from human emoon or acon; whereas development was a term used to describe polical goals and economic progress. Environmental protecon agencies were added to the exisng government structures to address environmental issues. The focus was on countering the ill-effects of the policies which caused environmental degradaon (cure). Convenona l approac The environment is where we live and development is what we all do to improve our lives. The two are inseparable. Government agencies and major departments (in charge of investment, employment, food, energy, and other economic and social development) play key roles in naonal decision making, and consequently in determining whether environmental resources are maintained, protected, or degraded. The focus is on correcng the policies that are the source or root cause of adverse environmental effects (prevenon). Convenona l approach

CLASS 10TH INFORMATION TECHNOLOGY for our planet. The aim of sustainable development is to balance our economic, environmental, and social needs, allowing prosperity for the present and future generaons. Objectives of Sustainable Development According to United Naons and the affiliated organisaons, the main objecves of sustainable development are: Economic Growth Building a robust and compeve economy; ensuring that sufficient land is available to support growth and innovaon; idenfying and coordinang other developmental needs. Environmental Protecon Protecng and enhancing our natural environment, helping to improve biodiversity, using natural resources wisely, minimising waste and polluon, helping to decrease climate change, spearheading a global shiſt to a low-carbon economy Social Inclusion Creang high-quality development with accessible local services for the community to support its health, social, and cultural well-being. Cultural Diversity Building sensivity towards all cultures and celebrang diversity. The objecves to achieve effecve and sustainable development must be applied simultaneously, interacng with one another in a consistent and commied effort. Importance of Sustainable Development The growth of an economy is considered to be of utmost importance. However, the negave impact that unrestrained growth has on the environment is rarely brought to the forefront. Consequences of Unbalanced Development  Over the past two decades, economic growth has come at the expense of the environment. The following points describe the consequences of unbalanced development:

CLASS 10TH INFORMATION TECHNOLOGY  Earth's natural resources have been used in an inefficient and wasteful manner, that has resulted in poor air quality and overall climate change.  Greenhouse gas emissions are rising alarmingly, and the world is on a path to raise the average global temperature by more than three degrees Celsius in this century itself.  The world is already experiencing the repercussions of climate change, from sea-level rise and melng glaciers to more extreme weather paerns and destrucon of ecosystems and biodiversity. Importance of Sustainable Development We are ruthlessty using the earth's resources and the impact is evident to all. We have to reduce our consumpon of natural resources without compromising our quality of life. We need to consume and sustain at the same me. For instance, if we are cung a tree to use its wood, we should plant a sapling at the same me- this way we use the resource. Here, we are using the resource while ensuring that the future generaon can also do the same. Thus, development can never be achieved if the adverse effects are ignored completely. Measures to be Tak for Sustainable Development Some necessary steps needed for sustainable development are: Proper use of Means and Resources: Sustainable development emphasises on the wise use of resources like minerals, coal, petroleum, water, inseccides, chemical ferlisers, forest products, etc. This will lead to minimum use of resources for maximum benefit without wastage. It helps to conserve and protect the environment. Development of Posive Atude and Holisc Approach Towards Conservaon: Sustainable development brings about changes in people's knowledge, atude, and skill towards the environment. It makes people aware of their responsibility to use and preserve natural resources like oceans, forests, land, ecosystems, etc. It creates a sense that natural resources are commonly shared by all; everyone has a shared responsibility towards these, and hence, these cannot be used according to one's will. It helps to conserve natural and social environment. Integrated Socio-Economic Development: Sustainable development stresses on the fact that the progress of health, educaon, agriculture, tourism, and social reform is of prime importance for the development of human beings. However, while doing so, environment conservaon and promoon should also be kept in mind.

CLASS 10TH INFORMATION TECHNOLOGY Development based on People's Parcipaon: The aim of sustainabledevelopment can be achieved only when the maximum number of people parcipate and promote it. This parcipaon creates a feeling of ownership towards development work and environment conservaon among the local populaon. Limited Development: Somemes, development is done more than it is needed. It happens due to the greed of individuals. This undesirable development results in the depleon of the already limited non- renewable resources globally. Sustainable development promotes the concept of limited development that is not driven by greed International Efforts to Promote and Implement Sustainable Development The United Naons (UN) is supporng efforts to assess climate science, facilitang negoaons under the UNFCCC (United Naons Framework Convenon on Climate Change) for a climate agreement, and providing assistance to countries and communies to reduce emissions in order to migate climate change. To address climate change, the then UN Secretary-General Ban Ki-moon launched a number of iniaves, including 'Sustainable Energy for All', that is working to help people access clean energy, improve energy efficiency, and increase the use of renewable sources of energy. Sustainable Development Goals (SDGs) Sustainable Development Goals (SDGs) are the collecon of 17 global goals set by the United Naons General Assembly in 2015 for the year 2030. These were implemented from 1st January 2016. The SDGs have been adopted by 193 member countries of the United Naons. Aim of SDGs • Achieve a more sustainable future for all. • Address the global challenges-poverty, inequality. climate change, environmental degradaon, prosperity, peace, and jusce. • Acon by all countries, poor, rich, and middle-income to promote welfare while protecng the planet. • Foster economic growth; address social needs like educaon, health, social protecon, and job opportunies while tackling climate change and environmental protecon.

CLASS 10TH INFORMATION TECHNOLOGY Sustainable Development-The Future Over the next fiſteen years, countries will mobilise efforts to end all forms of poverty, fight inequalies and tackle climate change, while ensuring that no one is leſt behind. All countries have to put in significant efforts to aain sustainable development goals in order to save our planet. Individuals can also contribute to achieving these goals by making small changes in their lifestyle. Sustainable Development-The Challenges Sustainable development requires a lot of concentrated efforts, and its implementaon sll faces various challenges. Both developed and developing countries are facing numerous problems while aempng to achieve sustainable development:  Lack of financial resources to plan and carry out sustainable development • Sustainable development is oſten difficult in countries that are facing extreme challenges. An example can be war-torn countries that are unable to priorise sustainable development due to their polical condions. Natural occurrences, such as earthquakes and tsunamis, may also pose a threat to sustainability as their adverse effects can destroy infrastructure. For example, in the village of Ramche in Nepal, the only source of water was shaken off course by the earthquake of 2015. Since then, the village has been going a water crisis, and the expenditure on a boled water has gone up • At mes, there is conflict between immediate profit and investment towards sustainable technologies. For example, in certain countries, the government has increased financing towards the non-sustainable energy sources to keep the economy growing and win people's votes, which is a short term view. They are refusing to adopt sustainable energy sources which make beer economic sense in the long-term. • Corrupon is another challenge. Funding to developing countries usually provided through foreign grants may get misdirected due to bureaucracy and corrupon. • Lack of effort at the local government level may also prevent the implementaon of the goals. • Another key challenge is ensuring responsibility and accountability in achieving sustainable development. This requires linking regional, naonal, and internaonal scales to assess if countries are meeng the goals.

CLASS 10TH INFORMATION TECHNOLOGY ASSESSMENT TIME 1. Define sustainable development. Ans. Sustainable development is the development that meets the need of the present without compromising the ability of future generaons to meet their own needs. 2. What are the two key concepts of sustainable development? Ans. Sustainable Development contains two key concepts: a. The concept of 'needs'; in parcular the essenal needs of the world's poor, to which overriding priority should be given. b. The idea of limitaons imposed by the state of technology and social organisaon on the environment's ability to meet present and future needs. 3. Name the four objecves of sustainable development. Ans. The four objecves of sustainable development are economic growth, environmental protecon, social inclusion, and cultural diversity 4. How does sustainable development ensure economic growth? Ans. Sustainable development ensures economic growth by building a robust and compeve economy, ensuring that sufficient land is available to support growth and innovaon; idenfying and coordinang other developmental needs. 5. What does sustainable resource teach us about the use of resources? Ans. Sustainable development teaches the minimum use of resources for the maximum benefit without wastage. It helps to conserve and protect the environment. hps://easyclass10.blogspot.com/ hps://chat.whatsapp.com/CrpvX8RgvRkHmtCLYw3LhK

CLASS 10TH INFORMATION TECHNOLOGY THANK YOU