Answer: (i) Metal that exists in liquid state … Metals are malleable, while non-metals are non-melleable. Carbonate and sulphide ores are usually converted into oxides during the process of extraction. Solution: Gold and platinum are the two metals found in Free State in nature. Life Processes. Two sodium atoms transfer their 2 outermost electrons to an oxygen atom. Solution: Zinc is more reactive (more electro positive) than iron. Solution: Oxides that react with both acids and bases to form salt and water are known as amphoteric oxides. Solution: These solutions will be useful for various competitive exams such as JEE, NEET, etc. (d) iron Write the electron dot structures for sodium, oxygen and magnesium. What are alloys? Question 1 NCERT Solutions for Class 10 Science involves concepts from biology, physics, and chemistry. Answer: (iii) In Na2O, ions present are Na+ and O2-. 2. (ii) Sulphur-di-oxide turn the moist litmus paper from blue to red as contact of SO2 with water turns to sulfurous acid. Read further to find out everything about NCERT Solutions for Class 10 Science Chapter 3 Metals And Non Metals. This is insoluble in water. 3. In this chapter, you will find 13 questions related to nutrition in plants and … Question 14. The compounds fonned by the transfer of electrons from metal to non-non-metal are known as ionic compounds or electrovalent compound. Though applying grease and applying paint prevents iron from rusting but we cannot apply these methods on frying pan hence applying a coat of Zinc is most appropriate method to prevent an iron pan from rusting. (b) II (c) III Light green     Zinc sulphate(Colourless). Answer: Solution: (ii) calcium and potassium with water Here we are providing the solutions to all the chapters of NCERT Social Science Class 10 Textbook for the students. Yes, every mineral has a definite and a fixed composition. (i) Discuss how rainwater harvesting in … Solution: Answer is c. Food cans are coated with tin and not with zinc because Zinc is more reactive that is electro positive than tin. Fe2O3(s) + 2Al(s) → 2Fe(l) + Al2O3(s) + Heat, Gold is a metal found in nature in the free state, Class 10 Metals and Non Metals NCERT Book Page Number: 55. (d) AgNO3 solution and copper metal. NCERT Solutions for Class 10 Science Chapter 3 (PDF): Class 10 CBSE students can refer to this article for Metals and Non-metals chapter Class 10 NCERT Solutions. (c) Student B Pratyush took sulphur powder on a spatula and heated it. The impurities must be removed from the ore prior to the extraction of the metal. Solution: i. (iii)What are the ions present in these compounds? ii. These experiments can be helpful to demonstrate the malleability and electric conductivity of the metals and non-metals, Iron can be prevented from rusting by coating the surface of the iron with rust proof paints. (b) Zinc has a higher melting point than tin. Solution: Copper is used to make hot water tanks and not steel (an alloy of iron) because copper does not reacts with either water or steam whereas iron reacts with steams to corrode the tank. (a) calcium The solutions are helpful to understand the method of answering the questions in the board exams. Name two metals which will displace hydrogen from dilute acids and two metals which will not. iii. You must have seen tarnished copper vessels being cleaned with lemon or tamarind juice. The processes used for removing the gangue from the ore are based on the differences between physical or chemical properties of the gangue and the ore. NCERT Solutions for Class 10 Science, provides answers to all the questions printed at the end of every chapter as well as the questions included within a chapter. (ii) can be easily cut with a knife. Reason- HNO3 is strong oxidizing agent & oxidized H2 to water. The solutions created are genuine and can be referred by the students to prepare for their science exam. What happens when metals are burnt in air? The dishonest goldsmith dipped the gold bangles in aqua-regia (which contains 1 part of concentrated nitric acid and 3 parts of concentrated hydrochloric acid, by volume). (b) Assess the usefulness of these tests in distinguishing between metals and non-metals. Carbon in the form of graphite conducts electricity, as there is a free electron in each carbon atom, which moves freely in between the hexagonal layers. For e.g. MCQ Questions for Class 10 Science with Answers are prepared as per the Latest Exam Pattern. Reduction process is used for obtaining a metal from its oxide. In reality, the subject is quite interesting. Question 3 Write chemical equations that show aluminium oxide reacts with acid as well as base. Everything is presented in a way that students … Textbook Questions. Solution: (ii) Metals replace hydrogen from acids and form salts. (c) Applying a coating of zinc (b) Write a balanced chemical equation for the reaction taking place. High density & high melting point except Na & K. Produce sound on striking a hard surface. Solution: The element is likely to be The results obtained have been tabulated as follows. Question 1 Discussion Forum is a platform to share your knowledge and help the other by answering their questions. (c) CuSO4 – green; FeSO4 – blue All the questions and answers that are present in the CBSE NCERT Books has been included in this page. The metal oxides are then reduced to the corresponding metals by using suitable reducing agents such as carbon. (i) Metals form basic oxides or amphoteric oxides. Silicon reacts with oxygen and forms silicon dioxide. They gain e- as well as negative charge & tenned as anion. Solution: Question 8 (iii) is the best conductor of heat. When non-metals (like sulphur) are connected, the bulb does not light up at all. CuCO3. (b) (i) and (iii) Solution: (a) The green solution of ferrous sulphate slowly turns brown. A man went door to door posing as a goldsmith. UP Board students also download UP Board solutions for Class 10 Science chapter 12 in Hindi Medium. ferrous sulphate and zinc sulphate solutions respectively. Which of the following methods is suitable for preventing an iron frying pan from rusting ? Answer: (i) Sulphur-di-oxide does not have any effect on dry litmus paper. www.embibe.com . 15. (ii) Sodium Class 10 Science Chapter 1 deals with the various types of Chemical Reactions and Equations with related examples. Copper iii. A suitable salt solution of metal M is considered as the electrolyte. Write equations for the reactions of Solution: … Hence they are very effective in cleaning tarnished copper vessels. [CBSE2011] 10. Electrolyte       –     Metal salt solution. What types of oxides are formed when non-metals combine with oxygen? Question 16. (b) zinc has a higher melting point than tin The descriptive language is straightforward and easy to understand. Answers are based on NCERT Science Class 10 pattern and the Solutions cover every chapter provided in the Class 10 NCERT Science curriculum. Question 10. (i) Minerals If copper is kept open in air, it slowly loses its shining brown surface and gains a green coating. (iii) is the best conductor of heat. Life Processes. The NCERT Solutions to the questions after every unit of NCERT textbooks aimed at helping students solving difficult questions. Generally hard except sodium, lithium & potassium .These are soft and can be cut with knife. Which of the following pairs will give displacement reactions? (a) Platinum, gold and silver are used to make jewellery because these are malleable and ductile. (i) Mineral : The natural materials in which the metals or their compounds are found in earth are called minerals. Solution: Sodium is a reactive metals, if kept open it will react with oxygen to explore and catch fire. Magnesium The dishonest goldsmith can recover the dissolved gold from aqua-regia by a suitable treatment. Non-metals are non-conductors of electricity and heat; graphite is the exception, Non-metals are in solid-liquid and gaseous states, Metals which can be beaten to sheets are said to be malleable, Metals which can be drawn into thin wires are said to be ductile, Minerals are compounds (also known as elements) which are found naturally in the earth’s crust. In which test tube, he found a brown deposit? (i) Fe is less reactive than zinc. In this chapter, various chemical properties of acids, bases and salts and the reaction of them with metals, non-metals are studied. The citric acid present in the lemon or Knowing light reflection and refraction class 10 questions and answers will help students of class 10 to bag a decent score in class 10 … Metals and nonmetals class 10 Question 2. The carbonate ores are changed into oxides by heating strongly in limited air which is known as calcination. (d) Good thermal conductivity, malleability, light weight and high melting point are the properties/of aluminium due to which it-is used for making cooking utensils. Solution: He promised to bring back the glitter of old and dull gold ornaments. Get NCERT Solutions and Notes for Class 10 Science - Physics, Chemistry and Biology. 6. Question 2 Question 15. is a poor conductor of heat. All NCERT Solutions 2020-21 are updated for new academic session based on latest CBSE Syllabus 2020-2021. Malleable : A metal that can be beaten into thin sheets on hammering is called malleable. Can you play the detective to find out the nature of the solution he has used ? Chapter 3 Metals and Non Metals,  is derived from the NCERT textbook of Class 10 Science as prescribed in CBSE Schools of India. We offer chapter-wise solutions for topics in your CBSE Class 10 Science syllabus such as Electricity, Magnetism, Light, Energy, Human Eye etc. 1. Question 1 In other words, metal oxides that react wtih both acids and bases to form salt and water are called amphoteric oxides. In order to achieve that, interest and hard work alone wont be enough to work it out. Answer: Metals and nonmetals class 10 Question 7. Physical Properties of Metals And Non-Metals. Give reason NCERT Solutions Class 10 Social Science Economics Chapter 3 Money And Credit. Ductile is being able to be drawn into thin wires. Chemical reaction when iron reacts with dilute H2SO4 : (ii) Ore : Those minerals from which the metals can be extracted conveniently and profitably are called ores. (c) CU(NO3)2 Explain the meanings of malleable and ductile. Metals and nonmetals class 10 Question 3. So it is kept immersed in kerosene oil to prevent its reaction with oxygen, moisture and carbon dioxide of air to prevent accidental fires. To take bigger steps in life, you also need to rely on a good academic record. Explain. • Alloy is a homogeneous mixture of two or more metals, or a metal & nonmetal. Answer: Write the chemical reaction when iron reacts with dilute H2SO4. Give reasons why copper is used to make hot water tanks and not steel (analloy of iron). 3. Which of the following methods is suitable for preventing an iron frying pan from rusting? (iii) Ductility These minerals are formed as a result of chemical changes taking place during the formation of earth. Answer: Solution: (b) S(s) + O2(g) —> SO2(g), Multiple Choice Questions (MCQs) [1 Mark each]. What is chemical process used for obtaining a metal from its oxide? These CBSE NCERT Solutions will not only help in your Class 10 exam preparation but also in clearing other competitive exams. These compounds are made up of positive and negative ions. Metals and nonmetals class 10 Question 8. There are mainly five kinds of reactions which are combination … He placed an iron strip in each of them. Ores mined from the earth are naturally contaminated with sand, rocky materials. (iii) The ions present in sodium oxide compound (Na2O) are sodium ions (2Na+) and oxide ions (O2-). OR Answer: You must have seen tarnished copper vessels being cleaned with lemon or tamarind juice. Question 3 If you have any query regarding NCERT Solutions for Class 10 Science Chapter 3 Metals and Non-metals, drop a comment below and we will get back to you at the earliest. Elements can be categorised into two types viz, non-metals and metals. Extracting Metals towards the Top of the Activity Series (iv) is a poor conductor of heat. NCERT Solutions for Class 10 Science Chapter 12 Electricity answers of intext questions given on Page 200 or Page 202 or Page 209 or Page 213 or Page 216 or Page 218 or Page 220 or Exercises in English Medium. NCERT Solutions for Class 10 Science Chapter 13 Magnetic Effect of Electric Current intext questions on Page 224, Page 228, Page 229, Page 231, Page 233, Page 236, Page 237, Page 238 and Exercises are given. Why is sodium kept immersed in kerosene oil? The NCERT Solutions to the questions after every unit of NCERT textbooks aimed at helping students … Why do ionic compounds have high melting points? cinnabar (HgS), ore of mercury it is heated in air to converted it in mercuric oxide (HgO) which is then reduced to mercury by further heating. (ii) What would you observe if B is added to a solution of copper (II) sulphate? You are given a hammer, a battery, a bulb, wires and a switch. Metallic oxides of zinc, magnesium and copper were heated with the following metals. By losing two electrons, the two sodium atoms form tow sodium ions (2Na+). Even if the answers are correct, the marks are allotted for other parameters too. By losing two electrons, the two sodium atoms form two sodiumions (2Na+). (iii)Metal B is the most reactive because it displaces iron from its salt solution. Hence there will be strong force of attraction between them. The NCERT Solutions to the questions after every unit of NCERT textbooks aimed at helping students solving difficult questions. 1. Question 20 The ions present in Magnesium oxide compound (MgO) are magnesiumions Mg2+ and oxide ions (O2-). (ii) Zn is more reactive than Fe, so it displaces iron as follows: Metals and nonmetals class 10 Question 5. Cu doesn’t bum but hot metal coated with CuQ black colored layer. When magnesium reacts with oxygen, the magnesium atom transfers its two outermost electrons to an oxygen atom. It provides answers to the questions given in the textbook. So silver metal precipitating out and a copper II nitrate solution will be remaining. (b) Sodium, potassium and lithium are stored under oil. Write the chemical reaction that takes place. (c) Aluminium is a highly reactive metal, yet it is used to make utensils for cooking. Question 10 Moist litmus paper? Here we are providing the solutions to all the chapters of NCERT Social Science Class 10 Textbook for the students. Gold & silver are the most malleable metals. The properties which must be considered while categorising elements as metals and non-metals are thoroughly covered in the chapter, Metals and Non-metals.The chapter throws light on the physical properties of metals and non-metals like metallic lustre, hardness, … Potassium reacts with cold water violently immediately with evolution of H2 which catches fire. State two ways to prevent the rusting of iron. In the electrolytic refining of a metal M, what would you take as the anode, the cathode and the electrolyte ? At anode 2Cl– → Cl2 + 2e– Candidates who are searching for NCERT Solutions for Class 10 Science Chapter 3 Metals And Non Metals questions and answers can refer to the class 10 science chapter 3 notes below. The four students A, B, C and D recorded their observations in the form of a table as given below: Which student has recorded the correct observation? Define the following terms : (i) Mineral, (ii) Ore and (iii) Gangue. Answer: NCERT Books chapter-wise Solutions (Text & Videos) are accurate, easy-to-understand and most helpful in Homework & Exam Preparations. What chemical process is used for obtaining a metal from its oxide? (ii) Non-metals do not replace hydrogen from acids. NCERT Solutions For Class 10 Science Chapter 10 – Light Reflection and Refraction. (b) Green solution of FeSO4 rapidly turns brown NCERT Solutions Class 10 Social Science Economics Chapter 3 Money And Credit. The concepts are explained with steps, diagrams, tips to remember, shortcuts for numerical problems and tricks to remember chemical reactions and formulae. Food cans are coated with tin and not with zinc because The 10th standard is one of the most important milestones of a student’s life. Looking forward to pursuing higher education or a career in science? There is a strong force of attraction between the oppositively charged ions, so a lot of heat energy is required to break this force of attraction and melt the ionic compounds. Write the chemical reaction when iron reacts with dilute H2SO4. NCERT Books chapter-wise Solutions (Text & Videos) are accurate, easy-to-understand and most helpful in Homework & Exam Preparations. What would you observe when zinc is added to a solution of iron (II) sulphate? Question 13. NCERT Solutions Class 10 Science Chapter 3 Metals and Non-metals – Here are all the NCERT solutions for Class 10 Science Chapter 3. A student took four test tubes I, II, III and IV containing aluminium sulphate, copper sulphate? By losing two electrons, the magnesium atoms form a magnesium ion (Mg2+) and by gaining two electrons, the oxygen atom forms an oxide ion (O2-). Extracting Metals Low in the Activity Series, Extracting Metals Middle in the Activity Series. Define the following terms. (a) D Question 9 NCERT Solutions Class 10 Science & Main Points of All Chapters Chapter 1: Chemical Reactions and Equations. Name two metals, which will displace hydrogen from dilute acids, and two metals which will not. Colour change Deposit/coating of solution. We have prepared Class 10 Science NCERT Solutions chapterwise which will save student's precious time. Ways to prevent rusting of iron are : Solution: Answer is (c) Applying a coat of Zinc. (b) Sodium, potassium and lithium readily react with water to produce a lot of heat. Metals and Non metals Class 10 Question 5. So option D is not correct. The NCERT solutions for the 10th chapter of class 10 science are prepared by our subject matter experts in a simple and easy language. Our CBSE Class 10 Chemistry explanations are presented by qualified teachers. So, when it comes to a challenging subject like mathematics, being a little more concerned is … This solution contains questions, answers, images, explanations of the complete Chapter 3 titled Metals and Non-metals of Science taught in class 10. Which metals do not corrode easily ? (d) CuO Class 10. (d) Student C (b) Write a balanced chemical equation for the reaction taking place. From metal hydroxide & H2 of malleable and ductile question 5 diseases in animals humans... Subject experts only after extensive research Ag2S and aluminium oxide and zinc oxide are amphoteric in nature in textbook! Textbooks aimed at helping students solving difficult questions than Cu displaces Cu from CuSO4 solution ) is., K2SO4.Al2 ( SO4 ) 3 hand less reactive properties are –,! 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