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Noble gases are found in (free state/compound forms). 2. Non-metals are generally (malleable/brittle). 3. Potassium after combustion will form (acidic oxide/basic oxide). 4 years ago Rohit1998 class 8 cbse ncert materials metals non metals List different uses of metals that you come across in everyday life. 4 years ago Rohit1998 class 8 cbse ncert materials metals non metals What happens when (i) Dilute sulphuric acid is poured on copper plate? (ii) Iron nails are placed in copper sulphate solution? Write word equations of the reactions involved. 4 years ago Rohit1998 class 8 cbse ncert materials metals non metals Gold → (i) Thermometers (b) Iron → (ii) Electric wire (c) Aluminium → (iii) Wrapping food 4 years ago Rohit1998 class 8 cbse ncert materials metals non metals Aluminium foils are used to wrap food items. 2. Immersion rods for heating liquids are made up of metallic substances. 3. Copper cannot displace zinc from its salt solution. 4 years ago Rohit1998 class 8 cbse ncert materials metals non metals Generally, non-metals react with acids. ( ) 2. Sodium is a very reactive metal. ( ) 3. Copper displaces zinc from zinc sulphate solution. () 4 years ago Rohit1998 class 8 cbse ncert materials metals non metals Phosphorus is a very ………… non-metal. Metals are …….. conductors of heat and ……… Iron is ……… reactive than copper. 4 years ago Rohit1998 class 8 cbse ncert materials metals non metals Which of the following statements is correct? All metals are ductile. All non-metals are ductile. Generally, metals are ductile. Some non-metals are ductile. 4 years ago Rohit1998 class 8 cbse ncert materials metals non metals Give reasons for the following: Silver is used in making mirrors. Aluminium is used to make electrical wire. Iron is used in construction of bridges and houses. 4 years ago Rohit1998 class 8 cbse ncert materials metals non metals A metal ribbon bums in air with bright white light and forms a white powder. (a) Which metal is this? (b) Give the equation of the reaction taking place. (c) The metallic oxide formed would be acidic or basic in nature? 4 years ago Rohit1998 class 8 cbse ncert materials metals non metals Give reasons for the following : (i) Metals are used for making bells. (ii) We can’t use pure gold to make jewellery. 4 years ago Rohit1998 class 8 cbse ncert materials metals non metals A copper spoon had fallen into a container containing dil. HCl. What would happen to it in three days time? 4 years ago Rohit1998 class 8 cbse ncert materials metals non metals What happens when (a) Hydrochloric acid is poured on aluminium foils? (b) Sodium is placed in water? (c) Sulphur dioxide is dissolved in water? 4 years ago Rohit1998 class 8 cbse ncert materials metals non metals Compare the following chemical properties of metals and non-metals. (i) Formation of ions (ii) Action with dilute acids (iii) Action with hydrogen. 4 years ago Rohit1998 class 8 cbse ncert materials metals non metals Taking examples of magnesium and sulphur explain how metals and non-metals produce oxides with different characteristics. 4 years ago Rohit1998 class 8 cbse ncert materials metals non metals Give reasons, why : (i) Silver is used in jewellery. (ii) Copper is used in electrical wiring. (iii) Sodium is stored in kerosene oil. 4 years ago Rohit1998 class 8 cbse ncert materials metals non metals Identify the most reactive and least reactive metal amongst the followings: Al, K, Cu, Au. (ii) An iron knife kept dipped in blue copper sulphate solution changes to light green. Why? Write the equation also. 4 years ago Rohit1998 class 8 cbse ncert materials metals non metals Gaurav knows that wires can be made from copper and aluminium. He tries to make wire from sulphur and carbon. Will he succeed? Give reason also. 4 years ago Rohit1998 class 8 cbse ncert materials metals non metals There are four materials A, B, C, and D. A and D are hard and shiny, but B and C are dull and not very hard. Identify the metals and non-metals from A, B, C, and D. 4 years ago Rohit1998 class 8 cbse ncert materials metals non metals You are given two materials X and Y. On hammering X is flattened, but Y breaks. Which one is a metal? 4 years ago Rohit1998 class 8 cbse ncert materials metals non metals Page 2 / 5 Prev 1 2 3 4 5 Next Share: Super Globals Requests: Server: Options and Features route: community use_home_url: url: https://eanshub.com/community/ pageid:187 default_groupid: 3 2022 How Can We Help? 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