Metals and Non-metals

CBSE Class 10 Science · 116 board questions from this chapter; 115 listed below, 2022–2026

• Which of the following is an amphoteric oxide?2026
• When Mg metal is treated with hot water, it starts floating on the surface of the water. The reason for its different behaviour…2026
• Which one of the following metals does not react with cold water?2026
• Which one of the following metals neither reacts with cold water nor reacts with hot water but reacts with steam?2026
• Solder is an alloy of2026
• Alloys are homogeneous mixture of metal with a metal or non-metal. Which among the following alloys contain non-metal as one of…2026
• Galvanization is a process of coating iron articles with a thin layer of zinc to prevent iron from rusting. The iron is protected…2026
• On reaction with dilute HCl, which of the following pair of metals will evolve hydrogen gas?2026
• When zinc reacts with NaOH, the product formed is:2026
• When an element 'X' reacts with water, it starts floating. Identify the element 'X':2026
• A student notices that her silver jewellery turned dull and had a grey-black coating over it after wearing for a few months. What…2026
• Assertion: Carbon shares its valence electrons with other atoms of carbon or with atoms of other elements. Reason (R): The shared…2026
• Comment on the following properties of ionic compounds and give reason in support of your answer: (i) Physical nature (ii)…2026
• Show the formation of the following ionic compounds by transfer of electrons between the combining atoms: (i) Sodium oxide ( Na_2…2026
• What are amphoteric oxides? Categorise the following based on their nature: ZnO, Na_2 O, CO_22026
• Attempt either or: (i) Write one example each of one metal that is so soft that it can be cut with a knife, and one non-metal…2026
• Answer the following: 3 × 1=3 Why can the oxides of highly reactive metals not be reduced by carbon? Why do ionic compounds have…2026
• Attempt either option or. (i) Which method will be used to convert each of them to their respective metal oxides? Carbonate ore…2026
• Read the following passage and answer the questions given below: Most of metals occur in combined state in form of ores.…2026
• The pH plays an important role in our daily life. Strength of acids and bases depends on the number of H^+ ions and OH^- ions…2026
• Read the following passage and answer the questions that follow: An electrochemical process is used for refining metals by…2026
• Attempt either option or: (i) Give reasons for the following: (I) Ionic compound have generally high melting points and boiling…2026
• A metal, M, displaces iron from aqueous solution of ferrous sulphate but fails to do so in case of aqueous solution of aluminium…2025
• The products formed when Aluminium and Magnesium are burnt in the presence of air respectively are:2025
• A few pieces of granulated zinc are taken in a test tube and 2 mL of sodium hydroxide solution is added to it. When the contents…2025
• Which one of the following metals is protected from corrosion by a layer of its own oxide?2025
• The property by virtue of which a solid material can be drawn into thin wires is called:2025
• The most common method of extraction of metals from their oxide ores is:2025
• A metal, 'X', on treatment with sodium hydroxide liberates a gas 'G'. It also liberates the same gas, 'G' on treatment with…2025
• Study the following cases: (i) CuSO_4+Mg → (ii) FeSO_4+Pb → (iii) CaSO_4+Al → (iv) ZnSO_4+Ca → The case/cases in which new…2025
• Aluminium powder is used in thermit welding because:2025
• Two metals zinc and tin are dissolved separately in definite proportions in molten copper (the primary metal) to obtain two…2025
• Reaction between two elements A and B, forms a compound C. A loses electrons and B gains electrons. Which one of the following…2025
• During electrolytic refining of copper, the anode, the cathode and the electrolyte used respectively are2025
• The metals obtained from their molten chlorides by the process of electrolytic reduction are:2025
• The formation of magnesium oxide is correctly shown in option:2025
• Assertion: Ductility is that property of metals which enables copper to be used in making cooking utensils. Reason (R): Copper is…2025
• Assertion (A): The metals high up in the reactivity series cannot be obtained from their compounds by heating with carbon. Reason…2025
• Assertion: Brass is prepared by first melting copper and then dissolving tin into it in a definite proportion. Reason (R): The…2025
• Cinnabar is an ore of a metal 'X'. When this ore is heated in air, it is first converted into oxide of 'X' (XO) and then reduced…2025
• A light green coloured solution of sulphate salt of metal 'P' is taken in a beaker, a rod of another metal "Q" is put in this…2025
• Name a metal found in the earth's crust (i) in free state and (ii) in the form of its compound. State where each of these metals…2025
• In common practice silver is recovered from silver nitrate solution by the use of copper metal. Name the type of reaction that…2025
• Show the formation of magnesium chloride by electron transfer. Write the name of the cation and anion present in the compound…2025
• "Displacement reactions also play a key role in extracting metals in the middle of the reactivity series." Justify this statement…2025
• What is a reactivity series of elements? How is it developed? Arrange the following elements as they are arranged in the…2025
• Two substances 'A' and 'B' are burnt in air separately. For 'A', ashes are collected and dissolved in water to get solution 'X',…2025
• Study the experimental set-up given in the figure and answer the following questions: Identify these metals from the following…2025
• Name and describe the most widely used method for refining impure metals?2025
• Design an activity to show that metals are good conductors of heat and have high melting points.2025
• Samples of four metals A, B, C and D were added one by one to the following solutions. The results obtained were tabulated as…2025
• With the help of an activity, explain the conditions under which iron articles get rusted. OR (i) Name two metals which react…2025
• Write the electron-dot structures of (i) sodium, and (ii) oxygen. Using these structures, show the formation of sodium oxide.…2025
• Observe the following diagram showing an experiment to determine the conditions under which a metal ' M ' corrodes. List your…2025
• (i) Consider the following metals: K, Ca, Al, Cu, Ag, Fe Select from the above metals, a metal which I. does not react with…2025
• Many pure metals like copper, iron and gold are very soft and as such are considered unsuitable for certain uses. Metallic…2025
• The number of shells required to write the electronic configuration of Potassium (At. No. 19)2024
• A metal and a non-metal that exists in liquid state at the room temperature are respectively:2024
• The metals which are found in both free state as well as combined state are:2024
• Which of the following is an alloy of copper and tin?2024
• A metal 'X' is used in thermit process. When 'X' is heated with oxygen, it gives an oxide 'Y', which is amphoteric in nature. 'X'…2024
• Oxides of aluminium and zinc are:2024
• Assertion: Carbon reduces the oxides of Sodium and Magnesium. Reason (R): Sodium and Magnesium have more affinity for Oxygen than…2024
• Assertion: The extraction of metals from their sulphide ores cannot take place without roasting of the ore. Reason (R): Roasting…2024
• Assertion: Different metals have different reactivities with water and dilute acids. Reason (R): Extraction of a metal from its…2024
• Assertion: A piece of Zinc metal gets reddish brown coating when kept in copper sulphate solution for some time. Reason (R):…2024
• Assertion: Hydrogen gas is not evolved when zinc reacts with nitric acid. Reason (R): Nitric acid oxidises the hydrogen gas…2024
• Assertion: A piece of Zinc metal gets reddish brown coating when kept in copper sulphate solution for some time. Reason (R):…2024
• Assertion: Metals in the middle of activity series are found in nature as sulphides or carbonates. Reason (R): The sulphide ores…2024
• Sodium metal is stored under kerosene oil. Why? Some metal oxides are soluble in water. What are the aqueous solutions of these…2024
• State giving reason the reduction process to obtain the following metals from their compounds: (i) Mercury, (ii) Copper and (iii)…2024
• It is observed that Calcium on reaction with water floats on its surface. Explain why it happens. Also write a balanced chemical…2024
• State reasons for the following: Zinc oxide is an amphoteric oxide. Sodium metal is stored in bottle filled with kerosene oil. In…2024
• Draw a labelled diagram to show electrolytic refining of copper. State what happens when electric current is passed through the…2024
• Suggest an activity to differentiate between the chemical properties (acidic or basic character) of the product obtained on…2024
• State reasons for the following: Zinc oxide is an amphoteric oxide. Calcium starts floating when immersed in water. In the…2024
• State giving reason the reduction process to obtain the following metals from their compounds: (i) Mercury, (ii) Copper and (iii)…2024
• Write electronic configuration of Sodium (At. No.11) and Oxygen (At. No. 8) and show the formation of the ionic compound obtained…2024
• Name the ore of mercury and state the form in which it is found in nature. Write the chemical equations along with the condition…2024
• (i) Define a homologous series of carbon compounds. (ii) Why is the melting and boiling points of C_4 H_8 higher than that of C_3…2024
• The metals produced by various reduction processes are not very pure. They contain impurities, which must be removed to obtain…2024
• Three metal samples of magnesium, aluminium and iron were taken and rubbed with sand paper. These samples were then put…2024
• Metal oxides generally react with acids, but few oxides of metal also react with bases. Such metallic oxides are: I. MgO II. ZnO…2023
• Copper is used for making cooking utensils. Which of the following physical properties of copper is NOT responsible for the same?2023
• When zinc reacts with sodium hydroxide, the product formed is:2023
• Among the following, the metal with lowest density is:2023
• Which of the following statements is true for an amphoteric oxide?2023
• A metal 'X' is used in thermite process. When X is burnt in air it gives an amphoteric oxide 'Y'. 'X' and 'Y' are respectively:2023
• The following diagram shows the electrolytic refining of copper: Which of the following statements is incorrect description of…2023
• The electron dot structure of chlorine molecule is:2023
• Bronze is an alloy of2023
• Which of the following metals do not corrode in moist air?2023
• Assertion: Sodium oxide is an amphoteric oxide. Reason (R): Metal oxides which react with both acids as well as bases are known…2023
• Assertion: The colour of aqueous solution of copper sulphate turns colourless when a piece of lead is added to it. Reason (R):…2023
• Assertion: In the following reaction ZnO+C → Zn+CO ZnO undergoes reduction. Reason (R): Carbon is a reducing agent that reduces…2023
• Assertion: Sodium, calcium and magnesium are obtained by the electrolysis of their molten oxides. Reason (R): These metals have…2023
• (i) Why is acidified water considered to be a good conductor of electricity? (ii) Write a chemical equation showing the ionic…2023
• (i) A compound 'A' with a molecular formula of C_2 H_4 O_2 reacts with a base to give salt and water. Identify 'A', state its…2023
• (i) What are isomers? Write the structures of two compounds having molecular formula C_3 H_6 O and give their names. (ii) What…2023
• (i) It is observed that covalent compounds are bad conductors of electricity. Give reason. (ii) Carbon can neither form C^4+…2023
• The melting points and boiling points of some ionic compounds are given below: These compounds are termed ionic because they are…2023
• Almost all metals combine with oxygen to form metal oxides. Metal oxides are generally basic in nature. But some metal oxides…2023
• Metals are required for a variety of purposes. For this we need their extraction from their ores. Ores mined from the earth are…2023
• On the basis of reactivity metals are grouped into three categories - (i) Metals of low reactivity (ii) Metals of medium…2023
• Almost all metals combine with oxygen to form metal oxides. Metal oxides are generally basic in nature. But some metal oxides…2023
• (i) Write the electronic configuration of element X, given by its symbol as under: _20^40 X. (ii) Determine its position in the…2022
• "Carbon prefers to share its valence electrons with other atoms of carbon or with atoms of other elements rather than gaining or…2022
• The atomic number of an element 'X' is 11. (i) Write the electronic configurations of X and find its valency. (ii) Write the…2022
• The atomic number of a non-metal 'X' is 8. Write the period number and the group number of 'X'. Draw the electron dot structure…2022
• Draw the electron dot structure of the following: Cyclohexane Butane2022
• Write the electronic configuration of an element X having atomic number 24. Explain how on the basis of this electronic…2022
• Draw the electron dot structure of the following: Benzene Ethane2022
• List two advantages of adopting the atomic number of an element as the basis of classification of elements in the Modern Periodic…2022
• Consider the following organic compounds: (i) (ii) Name the functional group present in their compounds. Write the general…2022
• Consider the following organic compounds: (i) (ii) Name the functional group present in their compounds. Write the general…2022

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