true. SURVEY . Sodium reacts vigorously with ... That’s why sodium is stored in : 5) Metals react with bases, such as sodium hydroxide, to produce hydrogen gas. Name some common metals. True False 4 Coal can be drawn into wires. (True)? true. 2. True. Ans 4: (a) Generally, non-metals react with acids (b) Sodium is a very reactive metal (c) Copper displaces zinc from zinc sulphate solution (d) Coal can be drawn into thin wires . Cotton. In fact, so are the of the alkali metals in group I of the periodic table. Sodium. That means a full outer electron shell or valence shell. Answer: Hydrogen, oxygen, carbon, sulphur, phosphorus, etc. (b) One metal which is used to prepare hydrogen gas in the laboratory. Answer to: Is sodium magnetic? Question … MCQ Questions for Class 8 Science with Answers were prepared based on the latest exam pattern. True False Some properties are listed in the following Table. Learn vocabulary, terms, and more with flashcards, games, and other study tools. Answer: Copper, aluminium, iron, silver, gold, etc. Potassium. Alkali metals like sodium only have one valence electrons so they tend to donate this electron to nonmetals in order to achieve stability. 1. It tarnishes easily and has a low melting point and density.sodium is so reactive because they lose their valence electron very easily. During the fusion of organic compound with sodium metal, nitrogen present in the organic compound is converted into. We have provided Materials: Metals and Non-Metals Class 8 Science MCQs Questions with Answers to help students understand the concept very well. Statement A Sodium and potassium are highly reactive metals Statement B Sodium and potassium are stored under water . answer choices . SURVEY . 4. Name some common non-metals. ... Metal surface reacts with oxygen and the moisture present in air and get coated with: These are never found uncombined in nature. False. 3. 4. 5. True. Ans : (c) Assertion (A) is true but reason (R) is false. Potassium is in the most reactive group of elements, the alkali metals, but it's not the most reactive metal within the group. ... Q. Tags: Question 3 . SURVEY . 4. Vaults. Chemistry. Start studying Lab Chemistry Final Review-Ms. Coyle (ONLY DEFINITIONS AND TERMS from Chapter 6,7,8). Tags: Question 4 . Question 15. [1] Reason : Metallic sodium melts when exposed to air. Alkaline Earth Metals. Calcium. (d) Some non-metals are ductile. 8) Non-metals do not produce any sound when hit, which means they are not sonorous : true. (b) Sodium is a very reactive metal. Q. Alkali are so reactive to air they are generally stored in what? Answer: Explanation: As a part of the alkali metal group in the periodic table, sodium is highly reactive and is never found pure in nature. Besides cesium, what other alkali metal is the most reactive: francium, sodium, or lithium? Which of the following statements about alkali metals is true? We have provided Chemical Effects of Electric Current Class 8 Science MCQs Questions with Answers to help students understand the concept very well. 30 seconds . Question 4: Mark ‘T’ if the statement is true and ‘F’ if it is false. Q. Students can solve NCERT Class 10 Science Metals and Non-Metals Multiple Choice Questions with Answers to know their preparation level. (Less)? Tags: Question 4 . 3. It has only one stable isotope, 23Na. Option 2 S tatement ‘B’ is false, statement ‘A’ is true. 4. What yellow food is know for its good source of potassium? Oh, furthest right excluding the Noble Gases. Answer: (a) False (b) True (c) False (d) False. Sodium(Na) and Potassium (K) quickly undergoes reaction with air or H2O (water or moisture) and burn violently and can explode, so it must be stored in an inert medium such as an inert liquid hydrocarbon (example: kerosene) as moisture cannot enter in it. The best electrical conductor is: (a) gold (b) silver (c) copper (d) aluminium. This metal is very reactive, has properties similar to those of magnesium, and is in the same period as bromine. Assertion : Sodium metal is stored under Kerosene. 13. Sodium. (c) Generally, metals are ductile. True False: 2: Sodium is a very reactive metal. Sodium losses an electron and gains a positive charge. (d) Metals react with acids to produce hydrogen gas. It is an excellent reducing agent. (d) A is false but R is true. Sodium is highly reactive metal. Sodium was first isolated by Sir Humphry Davy in 1807 by passing an electric current through molten sodium hydroxide. If true enter 1, else enter 0. ... SURVEY . Sodium is highly reactive, forming a wide variety of compounds with nearly all inorganic and organic anions (negatively charged ions). Mark ‘T’ if the statement is true and ‘F’ if it is false. They are very reactive with Cesium and Rubidium being the most reactive. It normally has an oxidation state of +1, and its single valence electron is lost with great ease, yielding the colourless sodium cation (Na +). You can refer to NCERT Solutions for Class 8 Science Chapter 4 Materials: Metals and Non-Metals to revise the concepts in the syllabus effectively and improve your chances of securing high marks in your board exams. True False 3: Copper displaces zinc from zinc sulphate solution. For example, when manganese dioxide is heated with aluminium powder, manganese dioxide is reduced to metallic manganese while aluminium gets oxidized to aluminium trioxide. Transition Metals . ( ) (b). Metals can be drawn into thin wires because: (a) they are sonorous (b) they are malleable (c) they are ductile (d) they are dense. False. (c) Copper displaces zinc from zinc sulphate solution. True. The goal of any alkali metal is to lose its valence electron and attain a stable octet configuration. false. False, metals. Q. asked Nov 12, 2017 in Chemistry by jisu zahaan (29.7k points) Mark 'T' if the statement is true and 'F' if it is false. False. (b) Metals are good conductors of heat and electricity. (a) Generally, non-metals react with acids. Mark ‘T’ if the statement is true and ‘F’ if it is false. The sodium atom. Question 3. True or False: Oxidation numbers are charges (like +1 or -1) from gaining or losing electrons. True or False: Group 17 elements are highly reactive nonmetals known as HALOGENS. It is kept in kerosene to prevent it from coming in contact with oxygen and moisture present. True or False: Group 1 elements (except ... False, 2. Materials: Metals and Non-Metals Class 8 Extra Questions Science Chapter 4 Materials: Metals and Non-Metals Class 8 Extra Questions Very Short Answer Questions Question 1. (d) Coal can be drawn into wires. Alkali Metals. 2. Mark ‘T’ If the Statement is True and ‘F’ If It is False. (a) Phosphorus is a very reactive non-metal. (b) Sodium is a very reactive metal true and false Get the answers you need, now! False. Distinguish between metals and non-metals on the basis of these properties. True. Give examples of metalloids. 30 seconds . ( ) (b) Sodium is a very reactive metal. Sodium is more reactive than . (a) Generally, non-metals react with acids. Properties of Metals and Non Metals. Oil. (d) Metals react with acids to produce __hydrogen__ gas. Sodium is a very reactive metal. Sodium metal is a very reactive metal. 154 views. (c) Iron is __more__ reactive than copper. Sodium is more abundant and easier to obtain. Tags: Question 6 . Metals and Non metals. 30 seconds . Sodium(Na), Potassium (K) and Lithium (Li) does not occur naturally and are highly reactive metals. Question 4: Mark T if the statement is true and mark F if the statement is not true. Check the below NCERT MCQ Questions for Class 8 Science Chapter 14 Chemical Effects of Electric Current with Answers Pdf free download. Sodium, like all the Group 1 metals, is very reactive because it wants to achieve what is called an inert gas electron configuration. Lithium. 3. View Answer. ... Option 1 Statement ‘A’ is true, statement ‘B’ is false. The family in the periodic table that contains the most reactive metals is the_____ answer choices . True or False: Elements of group eight are very reactive. Question 2. As a general rule, elements in the furthest two columns to the right and the left of the periodic table are going to be the most reactive elements. It is not true; many metals are very reactive and several nonmetals are nonreactive. Ans: (a) False (b) True (c) False (d) False The alkali metals, Group 1A, are the most reactive metals because they have one valence or outer electron. Click here👆to get an answer to your question ️ Sodium is more reactive than . Sodium is a Very Reactive Metal. 6) Silicon and ... false. Water. Other Metals. … ( ) ← Prev Question Next Question → +1 vote . Highly reactive metals such as sodium, calcium, aluminium, etc., are sometimes used as reducing agents because they can displace metals of lower reactivity from their compounds. Generally, non-metals react with acids. Gold. (b) Metals are __good__ conductors of heat and __electricity__. (a). 5. 10th. True. (c) Iron is more reactive than copper. Q. Sodium is a soft, silvery white, highly reactive element and is a member of the alkali metals within "group 1" (formerly known as ‘group IA’). false. Are alkali metals less or more dense than most elements? Sodium reacts with water to evolve hydrogen which immediately catches fire. True or false: Alkali Metals are so soft they can be cut with a knife? ... Answer whether the above statement is true or false. ( ) … Free PDF Download of CBSE Class 10 Science Chapter 3 Metals and Non-Metals Multiple Choice Questions with Answers. ( ) Concept: Chemical Properties of Metals and Non-metals. By signing up, you'll get thousands of step-by-step solutions to your homework questions. answer choices . True. They lose this electron very easily, forming ions with a charge of +1. ( ) (b) Sodium is a very reactive metal. MCQ Questions for Class 10 Science with Answers was Prepared Based on Latest Exam Pattern. (a) Generally, non-metals react with acids. (Francium)? Sodium is a very reactive metal. Sodium is a very reactive metal. True of false: Can alkali metals explode if they are exposed to water? From among the set of metals — sodium, zinc, iron, copper, silver, select the following giving equations for each reaction : (a) Two metals which will liberate hydrogen from water. Sodium reacts with oxygen in air at room temperature to form sodium oxide. Which is not a Alkali Metal? True. Group I of the alkali metals explode if they are not sonorous: true so are the of the table. 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