(b) Metals are conductors of heat and ____________ . Copper is used in electrical wiring because it is a good conductor of electricity. Can a wire be drawn out of wood? A student dips a zinc plate in copper sulphate solution. (b) All non-metals are ductile. Would it still have been such a useful metal .Give reason? Deerfield Academy AP Chemistry Project by Richard Park and Alex Platt Ans: It is done by passing an electric current through sulphuric acid using aluminium rod as anode. The metallic oxide formed would be acidic or basic in nature ? What is the zinc In the sample provided?_____ How many moles of zinc are In this sample? thin sheets used for wrapping of food items, medicines, etc. Give reason: Chemical reaction does not take place when copper is added to iron sulphate solution. Question 1.Which of the following properties is generally not shown by metals? Copper cannot displace zinc from its salt solution. ( ) 4. 1. ( ) (d) Coal can be drawn into wires. Zinc sulphate and magnesium Since Zinc is more reactive than Copper, Zinc displaces Copper from Copper sulphate to form Zinc sulphate and Copper. Describe any three properties of metal with suitable example? (e) A metal that bums in oxygen with a bright light.Answer: Why silver and gold do not react with hydrochloric acid? 5. (iii) Anodizing of aluminium: Anodizing process consists of passing an electric current through sulphuric acid using aluminium as anode. False ii. (e) Machinery Because when zinc is dipped into a copper sulfate solution, zinc becomes plated with copper. Question 4: Mark T if the statement is true and mark F if the statement is not true. Question 71. Gold is alloyed with copper to make it hard. Ans: Sodium and potassium react quickly with oxygen at room temperature so they are stored in kerosene oil. Copper displaces zinc from zinc sulphate solution. 3. Which metals will react with cold water ? (ii) In general metals react with water to form a metal oxide or hydroxide and hydrogen gas. Leave the tubes for several days and then examine them. (iv) Copper displaces zinc from zinc sulphate solution. (a) Fullerenes(b) Graphite(c) Diamond(d) SulphurAnswer:(b), Question 14.Food cans are coated with tin and not with zinc because(a) zinc is costlier than tin(b) zinc is less reactive than tin(c) zinc is more reactive than tin(d) zinc has a higher melting point than tinAnswer:(a), Question 15.Electrical wires have a coating of an insulating materials. Which of the following statements is true about the reaction between zinc and copper sulfate? They are:(a) Painting or applying oil: Painting the surface of the metal after cleaning it thoroughly is the most common method which keeps air away. In the periodic table, Aluminum is a metal of Group 13 and copper, iron and zinc are transition metals. This article explains everything you need to know about zinc, its functions, benefits, the risk of deficiency and potential side effects. zinc sulphate and copperd. (a) Generally, non-metals react with acids. 7. Can alloying be used to lower the melting point? Fill in the blanks. Potassium after combustion will form (acidic oxide/basic oxide). Preserve blood and other donated organ: – Nitrogen. Ans: An alloy is a mixture of two or more metals or one or more metals and a non-metal. It is used to alter the properties of metals to suit certain applications. (d) Metals react with acids to produce __hydrogen__ gas. 4. 3. Why is phosphorous stored under water? Zinc is more reactive. So aluminium is more reactive than zinc. Explain. 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