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You can also ndert our Career guidance article which is targeted at Courses after 12th. Here we have listed the books in English which are free of cost. These books are basically for CBSE Board but most of the state boards had also adopted the pattern and Content of these books. The time where the students had limited options for choice of NCERT textbook solutions, especially for Math and Science, has gone, but now with many choices, available students are dangling between which to choose.

Our motto is providing all the NCERT books for free to everyone and for this, we are ensuring you that you are going to get the books from class 1 to class 12 for free. All our links are working fine and one-click downloads of the books are available. Our team has given its best effort to make sure that all the books must be downloaded without any technical issues. Chqpter team has chosen the best way to ensure that the readability of the books should be improved and It should be more interesting than previous for the students to read and learn from the books chapteg easily.

The choices made in each edition are from the experts keeping in mind the authority and detail of the content.

This question might have come in your mind. Why they do not suggest other books for Competetive exams preparation. It is always advised to start from standard 6 NCERT texts and read up to standard 12 texts for all relevant subjects.

NCERT books are written in simple and lucid language class 10th ncert science book chapter 1 chemistr? it is easy to understand. They are easy to study, and also helps to save a lot of time. NCERT books class 10th ncert science book chapter 1 chemistr? written and published by reputable persons and institutions after great research. Mistakes are rarely found any and checked numbers of time before its publication.

NCERT books are written by experts in their respective fields after much research. Source of information of NCERT books are genuine and information are provided by government agency and institutions. NCERT books cover topics in a well-framed manner. NCERT books start with basics then they go to an advanced level.

Knowing what to read and how to read are two different things. In this method, you have to read all the books from the specific class and after completing them then proceed to the next class and in the same way to the next class.

Example-Start from class 6 NCERT books then read and complete all subjects history, geography, civics political science class 10th ncert science book chapter 1 chemistr? chemiistr? after completing c,ass subjects move to next class class 7 and again read all subjects of class 7 NCERT Books. In this method, you have to first complete any one subject from any class then move to the chaoter class and read the same subject which you have read in the previous class.

Example-Start from class 6 take any subject for example science then complete it and after reading the science book moves to next class 7 and read the same subject Science and after completing its move to the next class and again choose science subject. If you read NCERT books subject wise you will understand the subject booo and your basic knowledge gets stronger in any subject.

In chemistrr?, if you read NCERT books by the first method that is class wise you will get less knowledge because this method creates the class 10th ncert science book chapter 1 chemistr? between the same subject. If you read NCERT books with full concentration then you will cover it in two to three 10th Class Ncert Book Science Hindi Medium Jack months months.

If not with much focus and concentration it will take too much time maybe months four to six months. It will take two months to three months, not one month because you have to read around 44 NCERT books even if you complete one book in one day it will take clsas than one month. Take interest while reading and enjoy the chapter. Instead, read them till your mind absorb the subject matter without any stress.

When completed, again revise the chapters of your interest within days. Revision is the key, so keep revising them very frequently. This method will definitely work. If you love technology and smartphone, then you should know what Google is going to bring in Next Google smartphone class 10th ncert science book chapter 1 chemistr? releasing in Octoberyes, Google Pixel 3 is coming soon. The questions and answers given in NCERT textbooks at the end of each chapter are not only important for examination but also class 10th ncert science book chapter 1 chemistr? for understanding the concepts in a better way.

Hence, we will tell you that you must read the NCERT books which are very essential for all the examinations. We recommend you to make the notes for every chapter and read it carefully to get success in the exam.

We have compiled the solution of CBSE Class 6 English, Hindi, Maths, Sanskrit, and Science Syllabus to ensure students understand and develop key concepts on various topics, which will also help them to grasp easily. Will not be published Required.

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Barium chloride reacts with Aluminium sulfate to give Aluminium chloride and a precipitate of barium sulphate d. Potassium metal reacts with water to give a potassium hydroxide and hydrogen gas Solution: a. Question 6 Balance the following chemical equations. Question 8 Write the balanced chemical equation for the following and identify the type of reaction of each case. Solution: a. Question 9 What is meant by exothermic and endothermic reactions?

Solution: An exothermic reaction is one that releases heat. If 1 mole of N 2 molecule reacts with 1 mole of O 2 molecule, the heat of KJ has to be supplied to initiate the reaction to give 1 mole of NO molecule.

This means that the bonds between N � N and O � O are so strong that they do not break easily. N 2 has triple covalent bond between the two N atoms. O 2 has a double covalent bond. Thus energy has to be put into the reaction to break the strong bonds. Thus the above reaction is a good example of an endothermic reaction.

Solution: During respiration, glucose combines with oxygen in the cells of our body to form carbon dioxide and water along with the production of energy. Write equations for decomposition reactions.

Solution: Essentially, decomposition reactions are the opposite of combination reactions. A compound decomposes i. Most decomposition reactions are endothermic. Another example of decomposition reaction is the heating of calcium carbonate sea shells, chalk :. Question 12 Write one equation each for decomposition reactions in which energy is supplied in the form of heat, light or electricity?

Solution: When calcium carbonate is heated, it decomposes to give calcium oxide and carbon dioxide:. Write relevant equations for the above? Solution: The difference between the displacement and double displacement reactions is that in a displacement reaction one element displaces another by virtue of it being more reactive whereas in a double displacement two anions and two cations switch places between two compounds respectively.

Thus Zn displaces Cu in the salt form. Zn is more reactive than Cu. Question 14 In the refining of silver, the recovery of silver from silver nitrate solution involves displacement by copper metal. Explain by giving examples: Solution: A precipitation reaction is a reaction in which soluble ions in separate solutions are mixed together to form an insoluble compound that settles out of Ncert Solutions Class 10th Science Chapter 6 Work solution as a solid.

This insoluble compound is called a precipitate. An example of a precipitation reaction Aqueous silver nitrate AgNO3 , when added to a solution containing potassium chloride KCl , precipitates a white solid, and silver chloride is observed. Solution: The shiny brown colored element X is copper metal Cu. When copper metal is heated in air, it forms a black colored compound copper oxide. So, the black colored compound is the copper oxide or copper II oxide, CuO.

Question 17 Why do we apply paint on iron articles? Solution: Rust is a soft and porous substance, which gradually falls from the surface of an iron object, and then the iron below starts rusting. Thus, rusting of iron or corrosion of iron is a continuous process which, if not prevented in time, eats up the whole iron object.

So, when we apply paint on iron articles it reduces the rusting of iron. Question 18 Oil and fat containing food items are flushed with nitrogen.

Solution: Packaging fat and oil containing foods in nitrogen gas can prevent rancidity. When the fat and oil present in food materials gets oxidised in air , their oxidation products have an unpleasant smell and taste. When it is surrounded by unreactive gas, nitrogen, there is no oxygen of air to cause its oxidation and make it rancid. Question 19 Explain the following terms with one example each.

Corrosion b. Rancidity Solution: a. Corrosion is the process in which metals are eaten up gradually by the action of air, moisture or a chemical on their surface.

Corrosion is caused mainly by the oxidation of metals by the oxygen of air. Example: Rusting of iron is the most common form of corrosion. This is called rusting of iron. The condition produced by aerial oxidation of fat and oil in food which is marked by an unpleasant smell and taste is called rancidity. Example: Rancidity can be retarded by keeping Ncert Solutions For Class 10th Science Chapter 1 Form food in a refrigerator. The refrigerator has a low temperature inside it.

When the food is kept in a refrigerator, the oxidation of fat and oil in it is slowed down due to low temperature. So, the development of rancidity due to oxidation is retarded. Question 20 Why should a magnesium ribbon be cleaned before burning in air?

Solution: To remove the oxide layer and facilitates rapid burning. Question 21 Write the balanced equation for the following chemical reactions. Question 22 Write a balanced chemical equation and state symbols for the following reactions. Solutions of barium chloride and sodium sulphate in water react to give insoluble barium sulphate and the solution of sodium chloride b.

Sodium hydroxide solution in water reacts with hydrochloric acid solution in water to produce sodium chloride solution and water. Question 24 Why does the colour of copper sulphate solution change when an iron nail is dipped into it?

Solution: In this reaction, iron displaces copper from copper sulphate solution. The deep blue colour of copper sulphate solution fades due to the formation of light green solution of iron sulphate.

A red-brown coating of copper metal is formed on the surface of the iron metal. This displacement reaction occurs because iron is more reactive than copper. Question 25 Identify the substances that are oxidised and the substances that are reduced in the following reactions. The addition of oxygen is Called oxidation.

So the substance that is oxidized is sodium Na. In this reaction, copper oxide CuO gives the oxygen required for the oxidation of hydrogen; therefore, copper oxide is the oxidizing agent. Hydrogen is responsible for removing oxygen from copper oxide; therefore, hydrogen is the reducing agent here.

Question 1. When crystals of lead nitrate are heated strongly in a dry test tube a crystals immediately melt b a brown residue is left c white fumes appear in the test tube d a yellow residue is left Answer: b Pungent smelling, brown fumes are evolved due to NO 2 gas and brown coloured residue of lead oxide PbO is left. Question 2. A dilute ferrous sulphate solution was gradually added to the beaker containing acidified permanganate solution.

The light purple colour of the solution fades and finally disappears. Which of the following is the correct explanation for the observation? In acidic medium, KMnO 4 oxidises ferrous sulphate to ferric sulphate. Question 3. Examples are: a Hydrogen reacts with chlorine to form hydrogen chloride. Important Questions on 10th Science Chapter 1 What is a balanced chemical equation?

Why should chemical equations be balanced? A reaction which has an equal number of atoms of all the elements on both sides of the chemical equation is called a balanced chemical equation.

The law of conservation of mass states that mass can neither be created nor destroyed. Hence, in a chemical reaction, the total mass of reactants should be equal to the total mass of the products. It means that the total number of atoms of each element should be equal on both sides of a chemical equation. Hence, it is for this reason that chemical equations should be balanced.

Why is respiration considered an exothermic reaction? Energy in our body is obtained from the food we eat.

During digestion, large molecules of food are broken down into simpler substances such as glucose. Glucose combines with oxygen in the cells and provides energy. The special name of this combustion reaction is respiration.

Since energy is released in the whole process, it is an exothermic process. NCERT textbooks are considered the best for understanding the basic concepts. If you want to download other subjects books like 10th Maths, Social Science, English, Hindi, Urdu then you can also download them from links provided on this page. Read them thoroughly and solve all the questions at the end of every chapter.

It is also important to solve all the model and previous year question papers. In this way, you will understand what is more important from the exam point of view, and then, you can finish those topics more effectively. However, we are not suggesting to skip any topic. Candidates can also download the e-books from Embibe. To improve your scores, you should solve practice questions and take mock tests. The tests offered at Embibe will help you in managing your time in an efficient manner.

After taking the Class 10 mock tests, your confidence will increase and you will do fewer mistakes during the board exam. If you have any queries, post them in the comment box below. We will get back to you at the earliest. Explore Embibe to have an online learning experience that is user friendly!

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