Lakhmir Singh Chemistry Class 10 PDF Free 51: The Best Resource for CBSE Class 10 Chemistry
Lakhmir Singh Chemistry Class 10 PDF Free 51
Introduction
Chemistry is one of the most fascinating and important subjects in science. It deals with the study of matter, its composition, structure, properties and reactions. Chemistry helps us to understand the world around us and how it works. It also helps us to develop new materials, medicines, technologies and solutions for various problems.
lakhmir singh chemistry class 10 pdf free 51
However, chemistry can also be challenging and complex for many students. It requires a lot of practice, revision and conceptual clarity to master the subject. That's why having a good textbook and a reliable solution book is essential for students who want to ace their Class 10 board exams.
One of the most popular and trusted books for Class 10 Chemistry is Lakhmir Singh and Manjit Kaur Solutions. This book provides comprehensive and detailed solutions for all the questions given in the textbook of Lakhmir Singh and Manjit Kaur Chemistry for Class 10. It covers all the chapters and topics as per the latest CBSE syllabus and exam pattern.
Who is Lakhmir Singh?
Lakhmir Singh is a renowned author and educator who has written several books on science subjects for students of various classes. He has a rich experience of teaching science at various levels and has been awarded with many honors and awards for his contribution to the field of education. He is also a member of various academic bodies and committees related to science education.
Lakhmir Singh has teamed up with Manjit Kaur, another experienced teacher and author, to write the textbooks and solutions for Class 10 Physics, Chemistry and Biology. Their books are widely used by students across India and abroad for their simple language, clear explanations, relevant examples and ample practice questions.
What are the benefits of Lakhmir Singh solutions for Class 10 Chemistry?
Lakhmir Singh solutions for Class 10 Chemistry are one of the best reference materials for those who face difficulty in preparation for the board exams. The solutions are prepared by subject experts at BYJU'S to help students acquire in-depth knowledge and obtain good marks in Class 10 board examinations. The questions have been solved in a specific and definite manner, which can be easily understood by the students.
Some of the benefits of Lakhmir Singh solutions for Class 10 Chemistry are:
They provide step-by-step solutions for all the questions given in the textbook of Lakhmir Singh and Manjit Kaur Chemistry for Class 10.
They cover all the chapters and topics as per the latest CBSE syllabus and exam pattern.
They help students to clear their doubts and strengthen their concepts.
They help students to revise the entire syllabus in a systematic and effective way.
They help students to enhance their problem-solving skills and analytical thinking.
They help students to improve their time management and accuracy in the exam.
They help students to boost their confidence and score high marks in the exam.
Chapter-wise overview of Lakhmir Singh solutions for Class 10 Chemistry
Lakhmir Singh solutions for Class 10 Chemistry consist of five chapters, namely, Chemical Reactions and Equations, Acids, Bases and Salts, Metals and Non-metals, Carbon and its Compounds, and Periodic Classification of Elements. Each chapter has a brief introduction, key concepts, sample questions and answers, and a summary. Let us have a look at each chapter in detail.
Chapter 1: Chemical Reactions and Equations
This chapter deals with chemical reactions and equations, as mentioned in the title. The chapter starts with an example of a chemical reaction happening when magnesium ribbon is cleaned when rubbing it with sandpaper before burning it in the air. Then, it talks about the characteristics of chemical reactions and how to balance the equations. Chemical reactions that are applicable and their examples in our day-to-day life are also covered in this chapter.
Key concepts
Chemical reaction: A process in which one or more substances (reactants) are converted into one or more new substances (products) with different properties.
Chemical equation: A symbolic representation of a chemical reaction using the symbols and formulas of the reactants and products.
Balanced chemical equation: A chemical equation in which the number of atoms of each element is equal on both sides of the arrow.
Types of chemical reactions: Combination, decomposition, displacement, double displacement, oxidation, reduction, redox, exothermic, endothermic, etc.
Effects of chemical reactions: Change in state, change in color, change in temperature, evolution of gas, formation of precipitate, etc.
Applications of chemical reactions: Corrosion, rancidity, respiration, photosynthesis, digestion, combustion, etc.
Sample questions and answers
Q1. Write a balanced chemical equation for the following reaction:
Zinc + Hydrochloric acid Zinc chloride + Hydrogen
A1. Zn + 2HCl ZnCl2 + H2
Q2. Identify the type of reaction in the following equation:
CuO + H2 Cu + H2O
A2. This is a redox reaction as well as a displacement reaction. CuO is reduced to Cu by gaining electrons from H2, which is oxidized to H2O by losing electrons to CuO.
Chapter 2: Acids, Bases and Salts
This chapter deals with the acids, bases and salts and their definitions in terms of furnishing H+ and OH- ions. The chapter starts with an introduction of indicators for acids and bases. It also includes their general properties, examples, and uses. The concept of pH scales and their importance in everyday life are also covered in the chapter. Then, it clearly explains the preparation and uses of sodium hydroxide, washing soda, baking soda, bleaching powder and plaster of Paris.
Key concepts
Acid: A substance that furnishes hydrogen ions (H+) or hydronium ions (H3O+) when dissolved in water.
Base: A substance that furnishes hydroxide ions (OH-) when dissolved in water.
Salt: A substance that is formed by the neutralization of an acid and a base.
pH: A measure of the acidity or alkalinity of a solution on a scale of 0 to 14.
pH indicators: Substances that change their color depending on the pH of the solution.
Sodium hydroxide: A strong base that is prepared by the electrolysis of brine solution. It is used for making soap, paper, rayon, etc.
Washing soda: A salt that is prepared by heating baking soda. It is used for washing clothes, softening water, making glass, etc.
Chapter 5: Periodic Classification of Elements
This chapter deals with the periodic classification of elements, which is a systematic arrangement of elements based on their atomic number, electronic configuration and chemical properties. The chapter starts with the historical development of the periodic table by various scientists such as Dobereiner, Newlands, Mendeleev and Moseley. It also explains the modern periodic law and the modern periodic table. The chapter also covers the trends in physical and chemical properties of elements across periods and groups.
Key concepts
Periodic classification of elements: A systematic arrangement of elements based on their atomic number, electronic configuration and chemical properties.
Periodic law: The physical and chemical properties of elements are a periodic function of their atomic number.
Periodic table: A tabular representation of elements arranged in increasing order of their atomic number in horizontal rows called periods and vertical columns called groups.
Periods: Horizontal rows in the periodic table that indicate the number of shells in an atom of an element.
Groups: Vertical columns in the periodic table that indicate the number of valence electrons in an atom of an element.
Trends in physical properties: Atomic size, metallic character, valency, ionization energy, electron affinity and electronegativity.
Trends in chemical properties: Reactivity with oxygen, water, acids and bases.
Sample questions and answers
Q1. How many periods and groups are there in the modern periodic table?
A1. There are seven periods and 18 groups in the modern periodic table.
Q2. Which element has the highest electronegativity value in the periodic table?
A2. Fluorine (F) has the highest electronegativity value (4.0) in the periodic table.
How to download Lakhmir Singh solutions for Class 10 Chemistry PDF free 51?
If you are looking for a convenient and easy way to access Lakhmir Singh solutions for Class 10 Chemistry, you can download them as PDF files from BYJU'S website. BYJU'S provides free PDFs of Lakhmir Singh solutions for Class 10 Chemistry for all the chapters and topics. You can download them by following these simple steps:
Steps to download the PDF file
Visit BYJU'S website at https://byjus.com/lakhmir-singh-solutions-class-10-chemistry/
Select the chapter that you want to download from the list of chapters given on the page.
Click on the "Download Free PDF" button at the end of the page.
The PDF file will open in a new tab or window. You can save it on your device or print it for offline use.
Advantages of downloading the PDF file
You can access Lakhmir Singh solutions for Class 10 Chemistry anytime and anywhere without any internet connection.
You can study at your own pace and convenience without any distractions or interruptions.
You can revise and practice all the questions and answers given in Lakhmir Singh solutions for Class 10 Chemistry before your exam.
You can share Lakhmir Singh solutions for Class 10 Chemistry with your friends and classmates for group study and discussion.
Conclusion
Lakhmir Singh solutions for Class 10 Chemistry are one of the best resources for students who want to excel in their board exams. They provide clear and concise solutions for all the questions given in Lakhmir Singh and Manjit Kaur Chemistry textbook for Class 10. They cover all the chapters and topics as per the latest CBSE syllabus and exam pattern. They help students to understand the concepts, clear their doubts, revise the syllabus, enhance their skills and score high marks in the exam. Students can download Lakhmir Singh solutions for Class 10 Chemistry PDF free 51 from BYJU'S website and use them as a handy reference material for their exam preparation.
FAQs
Q1. What is the difference between a strong acid and a weak acid?
A1. A strong acid is an acid that completely dissociates into its ions in water, while a weak acid is an acid that partially dissociates into its ions in water. For example, HCl is a strong acid and CH3COOH is a weak acid.
Q2. What is the difference between a metal and a non-metal?
A2. A metal is an element that tends to lose electrons and form positive ions, while a non-metal is an element that tends to gain electrons and form negative ions. Metals are usually shiny, malleable, ductile, good conductors of heat and electricity, and have low ionization energies and electronegativities. Non-metals are usually dull, brittle, poor conductors of heat and electricity, and have high ionization energies and electronegativities.
Q3. What is the difference between baking soda and washing soda?
A3. Baking soda is sodium bicarbonate (NaHCO3), while washing soda is sodium carbonate decahydrate (Na2CO3.10H2O). Baking soda is used for baking cakes, fire extinguishers, antacids, etc., while washing soda is used for washing clothes, softening water, making glass, etc.
Q4. What is the difference between carbon and its compounds?
A4. Carbon is an element that has four valence electrons and can form covalent bonds with other elements. Carbon compounds are compounds that contain carbon as one of the constituent elements. Carbon compounds can be organic or inorganic depending on the presence or absence of hydrogen.
Q5. What is the difference between periodic and non-periodic properties of elements?
A5. Periodic properties of elements are those properties that vary periodically with the atomic number of elements in the periodic table. For example, atomic size, metallic character, valency, etc. Non-periodic properties of elements are those properties that do not vary periodically with the atomic number of elements in the periodic table. For example, density, melting point, boiling point, etc. 71b2f0854b