We have included all the important questions from Metals and Non Metals similar to Class 10th Science Chapter 3 Ncert Solutions And that of your chapter 3 science Class 10 notes to help you secure a good Class 10th Science Chapter 3 Ncert Solutions And score in Class 10 science exam. Question 1 Give class 10th science chapter 3 ncert solutions and example of a metal which : i is a liquid at room temperature. Answer: i Mercury ii Sodium iii Silver iv Lead.
Question 2 Explain the meanings of malleable and ductile. Answer: 3 Solutions Class Chapter And Ncert 10th Science Class 10th science chapter 3 ncert solutions and : A metal that can be beaten into thin sheets on hammering is called 10hh. Ductile : A metal which can be drawn into thin wires is called ductile.
Question 1 Why is sodium kept immersed in kerosene oil? Answer: Sodium is highly reactive. Sklutions it is kept immersed in kerosene oil to prevent Class 10th Science Chapter 3 Ncert Solutions And its reaction with oxygen, moisture and carbon dioxide of air to prevent accidental fires.
Question 2 Write equations for the reactions of i iron with steam. Question 3 Samples of four metals A, B, C and D were taken and added to the following solution one class one. The results obtained have been tabulated as follows :. Answer: i B is the most reactive class 10th science chapter 3 ncert solutions and because it gives displacement reaction with iron II sulphate.
Metal A is less reactive because it displaces copper from its salt solution. Metal C is still less reactive because it can displace only silver from its salt Class 10th Science Chapter 3 Ncert Solutions And Class 10th Science Chapter 3 Ncert Solutions And solution and metal D is the least reactive because it cannot displace any metal from its Class 10th Science Chapter 3 Ncert Solutions And Class 10th Science Chapter 3 Ncert Solutions And salt solution. Question 4 Which gas is produced when dilute hydrochloric acid is added to a reactive metal?
Write the chemical reaction when iron reacts with dilute H 2 SO class 10th science chapter 3 ncert solutions and. Answer: Hydrogen gas is produced when dilute Class 10th Science Chapter 3 Ncert Solutions And hydrochloric acid is added to a reactive metal. Question 5 What would you observe when zinc Ncert Chapter Class Solutions 10th And 3 Science is added to a solution of iron II sulphate?
Write the chemical class 10th science Class 10th Science Chapter 3 Ncert Solutions And Class 10th Science Chapter 3 Ncert Solutions And chapter 3 ncert solutions and that takes place. Answer: Zinc is more reactive than iron. Therefore, Class 10th Science Chapter 3 Ncert Solutions And when zinc is added to a solution of iron II sulphate, then the greenish solutkons of iron II sulphate solution fades gradually due to the formation of colourless zinc sulphate solution and iron metal is deposited on zinc.
Question 1 i Write the electron dot structures Class 10th Science Chapter 3 Ncert Solutions And for sodium, oxygen and magnesium. Question 2 Why do ionic compounds have high melting points?
Answer: The ionic compounds are made up of positive and negative ions. There is a strong force of attraction between the oppositely charged ions, so a lot of heat energy is Class 10th Science Chapter 3 Ncert Solutions And required to break this force of attraction and melt the chapher compound. Due to this, ionic compounds have high melting points. Question 1 Define the following terms : i Mineral, ii Ore and iii Gangue. Answer: i Mineral : The natural materials in which the metals or their Class 10th Science Chapter 3 Ncert Solutions And compounds are found in earth are called minerals.
Question 3 What chemical process is used for obtaining a metal from its oxide. Answer: Reduction process is used for obtaining a metal from its oxide. For example, zinc oxide is reduced to metallic zinc by heating with carbon. Besides carbon, highly reactive class 10th science chapter 3 ncert solutions and like sodium, calcium, aluminium.
These displace metals of low reactivity from their oxides. Question 1 Metallic oxides of zinc, magnesium and copper were heated with the following metals :. In which cases will you find displacement reactions taking place? Answer: A more reactive metal can displace a less reactive metal Class 10th Science Chapter 3 Ncert Solutions And Class 10th Science Chapter 3 Ncert Solutions And from its oxide. But out of zinc, magnesium, and copper metals, magnesium is the most reactive, Class 10th Science Chapter 3 Ncert Solutions And zinc is less reactive whereas copper is the least reactive metal.
Question 3 What are Class 10th Science Chapter 3 Ncert Solutions And alloys? Answer: An alloy is a homogeneous mixture of two or more metals, or a metal and a non-metal. For example, bronze is an alloy Ncert Solutions For Class 10th Science Chapter 4 Pdf of copper and tin. Metals and Class 10th Science Chapter 3 Ncert Solutions And Nonmetals Class 10 Question 1. Which of the following pairs will give displacement reactions?
Answer: Class 10th Science Chapter 3 Ncert Solutions And d AgNO 3 10t and copper metal. Question 2. Which of the following methods is suitable for preventing an iron frying pan from rusting? Answer: c Applying a coating of zinc. Question 3. An element reacts with oxygen to give a compound with a high melting point. This compound is also soluble in water. The element is likely to be a calcium Class 10th Science Chapter 3 Ncert Solutions And b carbon c silicon d iron Answer: a Calcium.
Question 4. Food cans are coated with Class 10th Science Chapter 3 Ncert Solutions And Class 10th Science Chapter 3 Ncert Solutions And tin and not with zinc because a zinc is costlier than tin b zinc has Class 10th Science Chapter 3 Ncert Solutions And a higher melting point than tin c zinc is less reactive than tin d zinc is more reactive than tin. Answer: d Zinc is more reactive than tin. Metals and Non metals Class 10 Question 5. Chater are given a hammer, a battery, a bulb, wires and a switch. Answer: a Metals can be beaten into thin sheets with a hammer without Class 10th Science Chapter 3 Ncert Solutions And breaking.
Non-metals cannot be beaten with a hammer to class 10th science chapter 3 ncert solutions and thin sheets. Non-metals break into pieces when chaptr. Metals are malleable, while non-metals are Class 10th Science Chapter 3 Ncert Solutions And Class 10th Science Chapter 3 Ncert Solutions And Class 10th Science Chapter 3 Ncert Solutions And non-melleable.
When metals are connected into circuit using a battery, bulb, wires and switch, current Class 10th Science Chapter 3 Ncert Solutions And passes through the circuit and the bulb glows. When non-metals like sulphur are connected, the bulb does not light up at all.
Metals are good conductors of electricity. Metals are good conductors of electricity so these can be used for electrical cables. Question 6. What are amphoteric oxides? Give two examples of amphoteric oxides? OR Write chemical equations that show aluminium oxide Class 10th Science Chapter 3 Ncert Solutions And Class 10th Science Chapter 3 Ncert Solutions And reacts with acid as well as base.
In other words, metal oxides that react wtih both acids and bases to form salt and water are called amphoteric oxides. Aluminium oxide and zinc oxide are amphoteric in nature. Question 7. Name two metals which will displace hydrogen Class 10th Science Chapter 3 Ncert Solutions And Class 10th Science Chapter 3 Ncert Solutions And from dilute acids and two metals which will not.
Answer: i Metals above hydrogen in the activity series like sodium and magnesium displace hydrogen from dilute acids. Xolutions 8. In the electrolytic refining of a metal M, what would you take as the anode, the cathode Class 10th Science Chapter 3 Ncert Solutions And and the electrolyte? Question 9. Pratyush took sulphur powder on a spatula and heated it.
He collected the gas evolved by snd a test 10yh over it, as shown in the figure. Answer: i Dry litmus paper � no action. Question State two ways to prevent the rusting of iron. Answer: Class 10th science chapter 3 ncert solutions and to prevent rusting of iron are : a By painting b By galvanizing.
What type of oxides are formed when non-metals combine with oxygen? Answer: Non-metals combine with oxygen to form acidic oxides or neutral oxides. Give reasons : a Platinum, gold and silver are used to make jewellery. Answer: a Sdience, gold and silver are used to make jewellery because these are malleable and ductile. These are highly resistant to corrosion. This is due to their low ignition temperature and high reactivity.
This layer prevents aluminium to react with other substances. Since it is easier to obtain Class 10th Science Chapter 3 Ncert Solutions And metals from their oxides than from their carbonates or sulphides directly, therefore, the carbonate and sulphide ores are first converted to oxides for extracting the metals.
You must have seen Class 10th Science Chapter 3 Ncert Solutions And 3 And Chapter Class Solutions Science Ncert 10th tarnished copper vessels being cleaned with lemon zcience tamarind juice. Explain why these sour substances are effective in cleaning the vessels. Answer: The sour substances such as lemon or tamarind juice contain acids.
These acids dissolve the coating of copper oxide or basic copper carbonate present on the surface of tarnished copper vessels and makes them shining red-brown. Differentiate between metal and non-metal on the basis of their chemical properties. A man went door-to door posing as a Class 10th Science Chapter 3 Ncert Solutions And Class 10th Science Chapter 3 Ncert Solutions And goldsmith.
He promised to bring back the glitter of old and dull gold ornaments. An unsuspecting lady gave a set of gold bangles to him which he dipped in a particular solution. The bangles sparkled like new but their weight was reduced drastically.
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