12. Lead is used in storage batteries. Answer. Q3) With reference to the physical properties of metals and non-metals, state the following exceptions. 15. MCQs Questions Class 8 Science Chapter 4 Materials: Metals and Non-Metals with answer MCQ for boards and exams.Free PDF Download of CBSE Class 8 Science Chapter 4 Materials: Metals and Non-Metals Multiple Choice Questions with Answers.Based on Latest Exam Pattern. Answer: is a basic oxide. Materials: Metals and Non-Metals Class 8 Extra Questions Very Short Answer Type. a) Write two differences between metal and non-metal. c. Magnesium . NCERT Exemplar Class 8 Science Chapter 4 Materials : Metals and Non-Metals Multiple Choice Questions Question. A metal which is liquid at room temperature. 5) Non-metals cannot conduct heat as it has no free electrons that can carry heat from one . 3 - Synthetic Fibres and Plastics. 1 Which of the following is not a metal? Write the name of a metal which is found in liquid state at room temperature. In polishing, the jeweller put the gold jewellery in a mild acidic solution, which in reaction with acid goes into the solution. Malleability: Metals can be beaten into thin sheets. (c) Copper displaces zinc from zinc sulphate solution. The substance that will be flattened on beating with a hammer is (a) Crystal of iodine (b) Lump of sulphur Students can solve NCERT Class 8 Science Chapter 4 Materials: Metals and Non-Metals Multiple Choice Questions with Answers to know . NCERT Exemplar Class 8 Science Chapter 4 Materials : Metals and Non-Metals Multiple Choice Questions Question. done Metals and Non-metals Total Questions - 20 question_answer 1) Properties of substances W, X, Y and Z are listed below: W, X, Y and Z are respectively A) Iron, iodine, hydrogen and oxygen B) Gold, sulphur, chlorine and hydrogen C) Copper, phosphorus, nitrogen and carbon D) Mercury, bromine, oxygen and graphite. This is a 'Metals and non-metals quiz' created for class 8th graders. (a) Generally, non-metals react with acids. The correct option is a . . (b) Metals are good conductors of heat and electricity. Access Answers to NCERT Exemplar Class 8 Science Chapter 4 - Materials Metals And Non-Metals Multiple Choice Questions 1. List the characteristic properties of metals. Give it . Property by virtue of which metals can be beaten into thin sheets. Give reasons for the following: (a) Aluminium foils are used to wrap food items. The metals, used in making the alloy 'german silver', are-. Class 8 Science Chapter 4 Materials: Metals and Non-Metals with Answers by expert subject teacher for latest syllabus and examination. 7. So, in this process, a certain amount of gold is lost to the acidic solution. ii.) Materials: Metals and Non-Metals Class 8 MCQs Questions with Answers Choose the correct option. Exception - Diamond is hard. (a) reactive (b) good, electricity (c) more (d) hydrogen Q.4. Answer: Sodium and Potassium. Q2. Metals are malleable. (a) Aluminium is highly malleable and it can be easily beaten in sheets to make its foil for wrapping purposes. 4 - Materials : Metals and Non-Metals. Gallium has a low melting point. (d) Carbonate and sulphide ores are usually converted into oxides during the process of extraction. Aluminium. Question 2. A) 1, 2 or 3 B) (b) Copper, aluminium and iron are metals but sulphur is not a metal. (a) Generally, non-metals react with acids. (c) A metal can displace a less reactive metal from its salt in an aqueous solution. Non-metals are (a) non-ductile (b) non-sonorous (c) non-malleable (d) all of these Answer Question 3. (d) Sodium and potassium are stored in kerosene. 2. Answer: (a) Phosphorus is a very reactive non-metal. Give two uses of (a) Silicon : Highly pure silicon is used in making microchips for computers, transistors, solar cells, rectifiers and other solid state devices that are used extensively in the electronic and present space age industries. All netal exist in solid form at room temperature. They are silicon, boron, arsenic, antimony, germanium, tellurium and polonium. (a) Copper (b) Sulphur (c) Aluminium (d) Iron Soln: Answer is (b) Sulphur 2. All metals are ductile All non- metals are ductile Generally metals are ductile Some non-metals are ductile They all are solids. Match the following: Column A: Column B (a) Helium (1) Electric bulb (b) Neon (2) Thermometer (c) Argon . (c) they can give electrons to chlorine atoms to form chloride ions. False. 1 Which of the following is not a metal? 13. Nitrogen dioxide dissolves in rainwater in the presence of oxygen and reaches the soil as nitric acid (HNO 3) 4NO 2 + 2H 2 O + O 2 4HNO 3. Non-metals can exist in all the three physical states: solid, liquid and gaseous. 3) Non-metals doesn't show malleability as they cannot be beaten into thin sheets. Answer: aluminium and iron. Zigya App. (d) Metals react with acids to produce gas. Iodine. Nitric acid reacts with the minerals in the soil to form nitrate salts which is absorbed by the plants. Properties of Non-metals The type of questions that will be asked from NCERT Class 8 Science Unit 4 are displayed in the below provided NCERT Exemplar Class 8 Science Unit 4. b. Potassium . (c) Iron is more reactive than copper. 1. (b) Metals are conductors of heat and (c) Iron is reactive than copper. (d) Coal can be drawn into wires. These are the basic differences between them. CBSE Previous Year Question Paper With Solution for Class 12 Commerce; Metals are non-lustrous. (a) Aluminium Students can take a free CBSE Solutions of Materials: Metals and Non-Metals. ( ) Metals and Non-metals - Objective type questions . (d) they cannot share electrons with chlorine atoms. 16. Lead is soluble in nitric acid and acetic acid. (d) they cannot share electrons with chlorine atoms. (b) Sodium, potassium and lithium are stored under oil. (c) Aluminium is a highly reactive metal, yet it is used to make utensils for cooking. Related - Tips to score 95% in Class 10 Science Paper . 9. When a metal reacts with oxygen, the resulting oxide of the metal-. Zn + 2HCl ZnCl 2 . done Materials : Metals and Non-metals Total Questions - 35 question_answer 1) How many electrons are generally present in metals in their valence shell? (a) Aluminium foils are used to wrap food items. For e.g. Question 4: What do you understand by ductility? Name some common non-metals used in our daily life. Diamond ( a non-metal) is the hardest substance known. A non-metal in chemistry can be defined as a chemical element that generally in a chemical reaction gains electrons when reacts with a metal. Do non-metals produce ringing sound? Must Read: Science Projects for Class 8 Ductility - The property of metals by which they can be beaten into wires is called ductility. Answer (a) Aluminium is highly malleable and it can be easily beaten in sheets to make its foil for wrapping purposes. The metals which are solid in nature always have high melting and boiling points because they are closely packed and have high attraction. (ii) Non-metals are non-ductile i,e, they cannot be drawn into thin wires (iii) Non-metals are bad conductors of heat and electricity (iv) Non-metals are non-lustrous. Answer: Non-metal is a substance which is non-lustrous, non-sonorous, non-ductile, and is a bad conductor of heat and electricity. All metals are reactive. High Melting and boiling point: Most of the metals have high melting and boiling points. (a) Platinum, gold and silver are used to make jewellery. (a) A metals which is liquid at room temperature (b) A non-metal which sublimes and is non-lustrous. The physical properties of metals are as follows:-. Q 2 Q 1.8 Q 3.1. (a) Generally, non-metals react with acids. (d) Metals react with acids to produce hydrogen gas. Mark 'T' if the statement is true and 'F' if it is false. Appearance: All metals are generally shiny. (a) Phosphorus is a very reactive non-metal. (d) Metals react with acids to produce hydrogen gas. There is much to be learned when it comes to the properties of these two. Distinguish between metals and non-metals on the basis of these properties. Sodium . Copper is less . (a) Aluminium foils are used to wrap food items because aluminium metal is malleable. A metal generally used for making jewellery. (i) Non-metals are non-malleable i,e, they cannot be beaten into thin sheets with a hammer. Exercise Q1. The difference between metals and nonmetals is that metals are hard, lustrous, malleable, ductile, sonorous and good conductors of heat and electricity whereas non-metals are not. (c) Iron is more reactive than copper. (b) Metals are good conductors of heat and electricity . Answer 5. to wrap food items. They are often called semi-metals. So it is said that lightning is a boom to plants. That is why aluminium foils are used . True. Cl(17) - 1 electron -Cl-Electronic Configuration = 2,8,7 . All the gases are non-metals. (b) Immersion rods made up of metallic substances because metals are good conductors of heat and electricity. Metals are ductile. Match the following option: A. . Answer: Metals can be beaten into thin sheets. Which of the following statements is correct? Also Check: NCERT Solutions for Class 8 Science. ( ) (b) Sodium is a very reactive metal. (a) Generally, non-metals react with acids. Answer 4. (b) Immersion rods made up of metallic substances because metals are good conductors of heat and electricity. Therefore, it can be beaten into thin foils. Distinguish between metals and non-metals on the basis of these properties. Ans. Reaction of metals with Halogens: Metals react with halogens to form halides which are ionic compounds. (b) they can share electrons with chlorine. Question 4. That is, it is malleable. Zigya App. Non-metals react with water to form a gas which burns with a 'pop' sound. (b) All non-metals are ductile. Question 1. 2. NCERT Class 8 Science Chapter wise Solutions. Question 4. Mercury. Materials Metals And Non Metals Questions And Answers Question 7. In other words bond formed between positive and negative ion is called ionic bond. Magnesium reacts with cold water. Metalloid, in chemistry, is a term that describes a chemical element forming a simple substance having properties intermediate between those of a typical metal and a typical nonmetal. (d) Metals react with acids to produce hydrogen gas. 4. (c) Iron is more reactive than copper. Rust formed on iron objects is basic in nature. Materials : Metals And Non-Metals. 8. Mercury and Gallium are the metals which are found in liquid state at room temperature. Alkali metals react in following way: 2M + H 2 2M + H -. It is a property of metals only. Which of the following metals burns with dazzling white flame? With the help of it, candidates can prepare well for the examination. Mark 'T' if the statement is true and 'F' if it is false. Ans: Sodium and potassium, these metals are so soft that they can be cut with a knife easily. E. Answer the following questions in short: 1. Question 3: What do you understand by malleability? Video Explanation of Lesson Metals and Non-Metals Class 10 Class 12. Do you know metals? The differences between metal and non-metal are, i.) Extra Questions On Metals And Non-Metals Class 8 Question 8. Example: aluminium foil and silver sheets used to decorate sweets. Sodium metal is very reactive. 18. ( ) Class 10 Class 12. Comparative Study of Metals, Nonmetals, and Metalloids In turn, there are Four New Elements that are Added to the Periodic Table Non-metals . Generally, metals are good conductors of heat and electricity but non-metals are poor conductors. MCQ Questions for Class 8 Science with . Exception - mercury: Generally non-metals are not shiny. For e.g. True. answer choices. Here is a comprehensive collection of multiple choice questions that could be asked from Class 8 Science Chapter 4 Metals and Non-metals. 4. Which of the following is not a metal? 20 seconds. Write the equation of rusting of iron. (b) Metals are good conductors of heat and electricity. Question: Non-metals form covalent chlorides because. 14. Answer. Match the following option: A. Metallic oxide (i) Liquid Metal B. Non-metallic oxide (ii) Kept in kerosene C. Lead (iii) Kept in water D. Lead (iv) Basic in nature (b) Metals are good conductors of heat and electricity. (a) Copper (b) Sulphur (c) Aluminium (d) Iron Answer. Answer: copper + zinc + nickel. Metals and Non-Metals Class 8 - NCERT Chapter Solutions Q1. Science NCERT Grade 10, Chapter 3, Metals and Non-metals deals with the uses of metals and non-metals in daily life. Question 12. Free solutions for NCERT Solutions - Science , Class 8 Chapter 4 Materials: Metals and Non-Metals designed by Lido Experts. 4) Non-metals doesn't show ductility as they cannot be drawn into thin wires. (v) Non-metals are generally soft. 12. (b) Immersion rods for. It is also soft and does not react with food items. (b) they can share electrons with chlorine. 6 - Combustion and Flame. 2 - Microorganisms : Friend and Foe. Non metals are those elements which have 4,5,6 or 7 valence electrons in their valence shell and they always gain electrons to form electronegative ions. More variety in colour and states are displayed by the non-metals in comparison to metals. Hardness: generally hard Exceptions - sodium and potassium: Generally non-metals are soft. 6. 2) Non-metals are brittle. Liquid hydrogen is a good fuel for batteries. Top . Students can take a free test of the Multiple Choice Questions of Materials: Metals and Non-Metals. (a) Zinc (b) Phosphorus (c) Sulphur (d) Oxygen Answer: (a) Zinc, as it is a metal. The chemical symbol Pb comes from the Latin word plumbum. Which of the following is a non-metal? In this course, metals get positive charge because of transfer of electrons and non-metal gets negative charge because of acceptance of electrons. Answer. It has a tendency to form an acid if combined with oxygen and hydrogen. CBSE Solutions Class 8 Science Beehive Prose. answer choices. Lead is the most stable substance in nature. Answer: Basic. Answer: 6. Gold (i) Thermometers B. 5 - Coal and Petroleum. These explanations are written by Lido teacher so that you easily understand even the most difficult concepts APPEARS IN. Each Questions has four options followed by the right answer. alternatives. That is why aluminium foils are used . Therefore, immersion rods for heating liquids are made of metallic substances. False. (c) Copper cannot displace zinc from its salt solution. This ability is called malleability. b) Why sodium metal is stored in kerosene? Metals are good insulators of heat and electricity. There are few exceptions. Metals are (a) shiny (b) hard (c) sonorous (d) all of these Answer Question 2. Materials : Metals And Non-Metals. Answer 2. Sodium is more reactive than magnesium. <p>Metals are malleable</p>. Materials Metals and Non-Metals Questions and Answers Class 8 EXERCISE:- Q.1 Which of the following can be beaten into thin sheets? Each question has right answer Solved by Expert Teacher. All metals exist in solid form at room temperature. (c) they can give electrons to chlorine atoms to form chloride ions. Mark 'T' if the statement is true and 'F' if it is false. 3. SOLUTION: Q 6. Use these for exam preparation, to understand concepts or to do your homework. Answer. A) 1, 2 or 3 B) 7, 8 or 9 C) 10, 11 or 12 D) 20, 30 or 40 View Solution play_arrow question_answer 2) How many electrons are present in non- metals in their outermost shell? Free solutions for NCERT Solutions - Science , Class 8 Chapter 5 - Materials: Metals and Non-Metals Exercise question 8. (a) All metals are ductile. Choose the correct answer 1. Answer: No, non-metals do not produce the ringing sound. 2. Non Metals . Ionic Bonds. Substances used to enhance the growth of plants. 7 - Conservation of Plants and Animals. 3. (C) Copper cannot displace zinc from its salt solution. A metal which reacts with acid as well as base to form hydrogen gas. For example, carbon, sulphur and phosphorus are solid non-metals; bromine is a liquid non- metal; whereas hydrogen, oxygen, nitrogen and chlorine are gaseous non-metals. CBSE Class 8 - Science - Metals and Non-Metals (Question Bank) (#cbsenotes) #eduvictors Metals and Non-Metals (Question Bank) Name the following questions: 1. The chemical symbol for lead is Pb. Solve any question of Metals and Non metals with:- Most of the metals in existence have the power to conduct electricity, unlike all non-metals. (a) Copper (b) Sulphur (c) Aluminium (d) Iron Answer. Q. Non-metals react with oxygen to from basic or neutral oxides False. Question 3 Fill in the blanks. Complete the following reactions: Ans: 2Mg + O 2 Heat - 2MgO. Page No. View Solution play_arrow Bromine. (a) Phosphorus is a very non-metal. Give reasons for the following. We hope the NCERT Solutions for Class 8 Science Chapter 4 Materials: Metals and Non-Metals help you. Ans. Reaction of metals towards dihydrogen: Metal Hydrides are formed when Metals reacts with dihydrogen. 8 - Cell - Structure and Functions. 5. to wrap food items. Ans. Answer. 8. 8. 11. Malleability - The property of metals by which they can be beaten into thin sheets is called malleability. 8. Do you wish to test out your understanding of the two types of materials? The rest of these are non-metals. Lead is a chemical element with an atomic number 82. a. Non-metals form covalent chlorides because. If the red litmus placed in a solution turns blue, the solution is called hydroxides. Mg + H2O- MgO + H2. NON-METALS 1) Non-metals are non-lustrous as they cannot shine. The two most abundant metals, found in the earth's crust, are-. Mark 'T' if the statement is true and 'F' if it is false. Answer 3. If you said yes, then the quiz below is perfect for you. (b) Sodium is a very reactive metal. 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, malleability . Mark 'T' if the statement is true and 'F' if it is false. Identify the non-metal which exists in a liquid state in room temperature 25C. Which of the following can be beaten into thin sheets? NCERT Class 8 Science Unit 4 is for Materials : Metals and Non-Metals. 3. <p> Metals are good insulators of heat and electricity </p>. Example: copper wires. Metals: Non-metals: 1. Ionic bonds are formed because of transfer of electrons from metal to non-metal. Answer: 3Fe + 2H 2 O + O 2 Fe 3 O 4 + 2H 2. 17. Zinc Phosphorus Sulphur Oxygen Answer is (a) zinc Q.2 Which of the following statements are correct? Ca + 2H 2 O Ca (OH) 2 + H 2. 53. (b) Immersion rods for heating liquids are made up of metallic substances. Name two metals which can be cut with a knife. Metals are lustrous whereas non-metals have no luster. Question 3. (c) A non-metal which has low tensile strength (d) A non-metal which conducts electricity (e) A metal which floats on water Gold is allayed with copper to make it hard. Download the Science Quiz Questions with Answers for Class 8 free Pdf and prepare to exam and help students understand the concept very well. (a) they can give electrons to chlorine. Answer: The metals have the following properties: (a) Hardness, (b . (A) Aluminium foils are used to wrap food items. Complete the following equation : Ans: Zinc reacts with dilute hydrochloric acid to form zinc chloride and hydrogen. 19. Question 1. (a) Phosphorus is a very reactive non-metal. Iron (ii) Electric wire C. Aluminium (iii) Wrapping food D. Aluminium (iv) Jewellery E. Copper (b) Copper, aluminium and iron are metals but sulphur is not a metal. 1 - Crop Production and Management. Answer: The materials which are not sonorous and are poor conductor of heat and electricity are called non-metals. It is also soft and does not react with food items. (a) they can give electrons to chlorine. Answer: Mercury. (B) Immersion rods for heating liquids are made up of metallic substances. 2NO + O 2 2NO 2. State whether the statements given below are True or False: 1. Give reasons for the following.
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