NCERT Solutions For Class 9 10 11 12 Maths Science English Sep 27, �� NCERT Class 10th Physics Chapter 1 Ncert Solutions Company Solutions for Class 10 Science Chapter 1 Chemical Reactions and Equations includes all the important topics Class 10th Physics Chapter 1 Ncert Solutions Company with detailed explanation that aims to help students to understand the concepts better. Students who Class 10th Physics Chapter 1 Ncert Solutions Company are preparing for their Class 10 exams must go through NCERT Solutions for Class 10 Science Chapter 1 Chemical Reactions and Equations. Aug 10, �� Free PDF download of NCERT Solutions for Class 10 Science (Chemistry) Chapter 1 - Chemical Reactions and Equations solved by Expert Teachers Class 10th Physics Chapter 1 Ncert Solutions Company as per NCERT (CBSE) Book guidelines. To get the latest copy of NCERT Solutions for Class 10th Physics Chapter 1 Ncert Solutions Company Class 10th Science Chapter 1 visit myboat099 boatplans 17 rows�� NCERT Solutions For Class 12 Physics Chapter 1 Electric Charges And Fields. Topics .
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Hydrogen sulfide gas burns in air to give water and sulfur dioxide c. Barium Class 10th Physics Chapter 1 Ncert Solutions Company Class 10th Physics Chapter 1 Ncert Solutions Company 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.Physics Solutions Company 10th 1 Ncert Class Chapter Class 10th Physics Chapter 1 Ncert Solutions Company

Question 6 Balance the following chemical equations. Question 8 Write the balanced chemical equation for Class 10th Physics Chapter 1 Ncert Solutions Company the following and identify the type of reaction of each case. Solution: a. Question 9 What Class 10th Physics Chapter 1 Ncert Solutions Company Company Physics 10th Ncert Solutions Chapter Class 1 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 Ncert Solutions Class 10th Physics Chapter 12 University example of decomposition reaction is Class 10th Physics Chapter 1 Ncert Solutions Company the heating of calcium carbonate sea shells, chalk :. Question 12 Write one equation each for Class 10th Physics Chapter 1 Ncert Solutions Company Class 10th Physics Chapter 1 Ncert Solutions Company decomposition reactions in which energy is supplied in the form of heat, light or electricity? Solution: Class 10th Physics Chapter 1 Ncert Solutions Company 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 Class 10th Physics Chapter 1 Ncert Solutions Company that in a displacement reaction one element displaces another by virtue of it being more Solutions Physics Company Chapter 10th Ncert Class 1 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 Class 10th Physics Chapter 1 Ncert Solutions Company 14 In the refining of silver, the recovery of silver from silver nitrate solution involves Class 10th Physics Chapter 1 Ncert Solutions Company 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 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 Class 10th Physics Chapter 1 Ncert Solutions Company 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 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 Class 10th Physics Chapter 1 Ncert Solutions Company 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 10th Company Solutions Chapter Physics Class 1 Ncert 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 Class 10th Physics Chapter 1 Ncert Solutions Company Class 10th Physics Chapter 1 Ncert Solutions Company Class 10th Physics Chapter 1 Ncert Solutions Company 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 Class 10th Physics Chapter 1 Ncert Solutions Company Class 10th Physics Chapter 1 Ncert Solutions Company 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 Class 10th Physics Chapter 1 Ncert Solutions Company Class 10th Physics Chapter 1 Ncert Solutions Company iron is more reactive than copper. Question 25 Identify the substances that are oxidised and the Class 10th Physics Chapter 1 Ncert Solutions Company 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 Class 10th Physics Chapter 1 Ncert Solutions Company is responsible for removing oxygen from copper oxide; therefore, hydrogen is the reducing agent here.Class 10th Physics Chapter 1 Ncert Solutions Company

Question 1. When crystals of lead nitrate are heated strongly in a dry test tube a Class 10th Physics Chapter 1 Ncert Solutions Company 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 Class 10th Physics Chapter 1 Ncert Solutions Company 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 Class 10th Physics Chapter 1 Ncert Solutions Company to ferric sulphate. That is, a field line cannot have sudden breaks. Why not? At sudden breaks, the field will have more than one direction which is not possible.

This cannot happen, and so two field lines never cross each other at any point. Since both the fields have the same direction, the electric field at O will be summation of above field. What are the total charge and electric dipole moment of the system? Calculate the magnitude of the torque acting on the dipole. Jagranjosh Education Awards Click here if you missed it! This website uses cookie or similar technologies, to enhance your browsing experience and provide personalised Class 10th Physics Chapter 1 Ncert Solutions Company Class 10th Physics Chapter 1 Ncert Solutions Company Class 10th Physics Chapter 1 Ncert Solutions Company recommendations.

By continuing to use our website, you agree to our Privacy Policy and Cookie Policy. Physics Part 1 Class 11 textbook has 8 chapters which will provide you conceptual understanding of variety of topics which are very important for examinations. A large number of solved examples are included in the text in order to clarify the concepts and to illustrate the application of these concepts in everyday real-life situations.

Physics Part 2 Class 11 textbook has seven chapters that provide the knowledge of certain conventions, basic mathematical tools, numerical values of important Class 10th Physics Chapter 1 Ncert Solutions Company physical constants, and systems of measurement units covering a vast range from microscopic to galactic levels.

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