NCERT Solutions For Class 7 Science Chapter 10

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NCERT Solutions for Class 10 Science Chapter 1 In Text Book Questions


Question 1. Why should magnesium ribbon be cleaned before burning in air ? Answer: Magnesium ribbon has generally a coating of basic magnesium carbonate on itssurface. It is a mixture of magnesium hydroxide and magnesium carbonate and isslowly deposited on the surface of the metal by the action of moist air. Thecoating or layer prevents the metal from burning when flame is brought incontact with the metal. The surface should be properly cleaned preferably witha sand paper before burning the ribbon in air in order to remove the layer ofmagnesium oxide.More ResourcesQuestion 2. Write the balanced equations for the following chemical reactions : (i) Hydrogen + Chlorine ———> Hydrogen chloride (ii) Sodium + Water ———> Sodium hydroxide + Hydrogen (iii) Barium chloride + Aluminium sulphate ———> Barium sulphate + Aluminiumchloride. Answer: The balanced equations are written for the symbol equations and not for wordequations. Question 3. Write the balanced equations with state symbols for the following reactions : (i) Solutions of barium chloride and sodium sulphate in water react to giveinsoluble barium sulphate and solution of sodium chloride. (ii) Sodium hydroxide solution (in water) reacts with hydrochloric acidsolution (in water) to produce sodium chloride (in water) and water. Answer: The symbol equations in balanced form for the reactions are : Question 4. A solution of the substance ‘X’ is used for white washing. (i) Name the substance ‘X’ and write its formula. (ii) Write the reaction of the substance ‘X’ with water. Answer: (i) The substance lX’ is calcium oxide (also called quick lime). Its formulais CaO Question 5. With the help of an experiment show that in the electrolysis of acidulatedwater, the volume of one gas is twice the volume of the other gas. Name thegas. Answer: The gas is hydrogen and its volume is twice that of oxygen Question 6. When you mix solutions of lead (II) nitrate and potassium iodide, (i) What is the colour of the precipitate formed ? Name the compound involved. (ii) Write a balanced chemical equation for the reaction (iii) Is this a double displacement reaction ? Answer: (i) The precipitate is yellow in colour. The compound is lead (II) iodide withchemical formula Pbl2. (ii) pb(NO3)2 (aq) + 2KI (aq) ———-> Pbl2 (s) + 2KNO3 (aq) (iii) Yes, it is a double displacement reaction.Question 7. Why does the colour of copper sulphate change when an iron nail is dipped init ? Answer: Iron nail acquires a brown coating of copper as a result of the displacementreaction in which iron has displaced copper from copper sulphate solution. Thesolution becomes light green. Question 8. Give one example of the double displacement reaction. Answer: Question 9. Identify the substances that are oxidised and the substances that are reducedin the following reactions : Answer: (i) In this reaction, sodium (Na) is oxidised to sodium oxide (Na2O). Thismeans that oxygen (O2) has been reduced. (ii) In this reaction, hydrogen (H2) is oxidised to water (H2O) while copper(II) oxide (CuO) is reduced to copper (Cu).Question 10. Magnesium ribbon burns with a dazzling flame in air (or oxygen) and changes towhite substance magnesium oxide. Is magnesium being oxidised or reduced inthis reaction ? Answer: The balanced chemical equation for the reaction is : Magnesium (Mg) is oxidised to magnesium oxide (MgO) in this reaction.

NCERT Solutions for Class 10 PDF Download


Organization Name | The National Council of Educational Research and Training —|— Short Name | NCERT Category | NCERT Books Class | Class 10 Medium | English and Hindi Official Website | ncert.nic.in

Download NCERT Book for Class 10 Science PDF


It is easy to download the NCERT Class 10 Books. Just click on the link, a newwindow will open containing all the NCERT Book Class 10 Science pdf fileschapter-wise. Select chapter you wish to download and its done. You will havethe PDF on your device to study offline. * Click Here to go to the page where you can download NCERT Science Book Class 10 PDF.

Download NCERT Book for Class 10 Science PDF


It is easy to download the NCERT Class 10 Books. Just click on the link, a newwindow will open containing all the NCERT Book Class 10 Science pdf fileschapter-wise. Select chapter you wish to download and its done. You will havethe PDF on your device to study offline. * Click Here to go to the page where you can download NCERT Science Book Class 10 PDF.

Download NCERT Book for Class 10 Science PDF


It is easy to download the NCERT Class 10 Books. Just click on the link, a newwindow will open containing all the NCERT Book Class 10 Science pdf fileschapter-wise. Select chapter you wish to download and its done. You will havethe PDF on your device to study offline. * Click Here to go to the page where you can download NCERT Science Book Class 10 PDF.

NCERT Solutions For Class 7 Science Chapter 10


With the help of these NCERT solutions for Class 7 Science Chapter 10,students will be able to understand the concepts better and complete theirassignments and homework on time. It will also help in a quick revision of thechapter.Before getting into the detailed NCERT Solutions for Class 7 Science Chapter10, let’s have a look at the different topics in this chapter along withdownloadable PDF:

NCERT Solutions For Class 10 Science Chapter 3 PDF


Before getting into the details of NCERT Solutions for Class 10 Science, let’shave an overview of topics and subtopics under Metals and Non-Metals:Section Name|Topic Name —|— 3 | Metals And Non-Metals 3.1 | Physical Properties 3.2 | Chemical Properties Of Metals 3.3 | How Do Metals And Non-Metals React? 3.4 | Occurrence Of Metals 3.5 | Corrosion

How to download NCERT Solutions for Class 10 Science?


* Check the table provided above. * Click on the respective chapter’s link. * Now scroll down and check the question you are looking for. * Check the given solution and take a screenshot of it. You can also save the webpage to check the solutions offline.

NCERT Solutions For Class 6 Science Chapter 12 PDF Download


The detailed CBSE Grade 6 Science Chapter 12 NCERT solutions are providedbelow. You can also download the NCERT Solutions for 12th Class ScienceChapter 12 PDF to study in the offline mode.Download Solutions For NCERT Class 6 Chapter 12 PDFAlso, download,This NCERT chapter on Electricity and Circuits introduces the concept ofelectricity and other electrical devices. Students will learn about theworking of an electric cell, connecting an electric bulb to an electric cell,and how to form an electric circuit. Also, the NCERT Class 6 Science Chapter12 will teach students about the structure and function of an electric switchin the form of diagrams. The illustrations provided in the chapter will helpstudents better understand the concepts. To help students further, we bringthe NCERT Grade 6 Science Chapter 12 Solutions PDF.Also check:

NCERT Solutions For Class 10 Science: NCERT Science Book Class 10 Solutions


PDF Free DownloadCBSE NCERT Solutions for Class 10 Science acts as the best study material forstudents as it helps them in their studies while they advance through thesyllabus. We have arranged the NCERT Science Class 10 solutions in a chapter-wise format so that students can download the solutions for the chapter theyare preparing or solving questions for. You can check the list below:

NCERT Solutions For Class 10 Science: Chapter Descriptions


You can check the description of each chapter in the following sections. Thiswill give you a better understanding of the chapters. A link to download NCERTSolutions PDF is given below the description of each chapter. Just click onthe link and download the solutions for free.Note: In the NCERT Science textbook for Class 10, Chapters 1 to 5 constitutethe Chemistry portion, Chapters 6 to 9 cover the Biology syllabus, andChapters 10 to 16 cover the syllabus of Physics.Check Out CBSE Class 10 Science Syllabus From Here

Download NCERT Solutions Class 8 Science chapter 10 Reaching The Age Of


Adolescence In PDF FormatYou can also download here the NCERT Solutions Class 8 Science chapter 10Reaching The Age Of Adolescence in PDF format.Click Here to download NCERT Solutions for Class 8 Science chapter 10 ReachingThe Age Of Adolescence

Download Chapterwise PDF for NCERT Solutions Class 9 Science


NCERT Solutions for Class 9 Science help students to clear any doubtsinstantly and in a more efficient way. These solutions guide students toprepare for important concepts included in the CBSE Class 9 Science syllabus.Students studying in Class 9 are required to solve the exercise questionsincluded in the NCERT Science Book Class 9 to create a proper understanding ofthe topics.While solving the textbook questions, students often find doubts and getconfused. The NCERT Solutions for Class 9 come in handy at such times, as theyinclude precise explanations and detailed answers to those questions. TheseCBSE Class 9 Science NCERT Solutions cover solutions to all the importantchapters included in the textbook-like Matter, Atom, Tissues, LivingOrganisms, Motion, Force, Laws of Motion, Gravitation, Energy and work, Sound,Natural Resources, etc.Along with answers to the textbook questions, these solutions provide youextra questions, exemplar problems, the important questions from Previous yearQuestion papers, sample papers, worksheets, MCQ’s, short answering questions,descriptive type questions, their solutions as well as tips and tricks.

NCERT Solutions for Class 9 Science Chapter wise PDFs


NCERT Class 9 science solutions are provided in a format for betteraccessibility to the students. These solutions serve an important studyingtool for students who are preparing for their board examinations andassignments.

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