Facebook Twitter Instagram
    ScienceMotive
    • Class 9
      • Matter in Our Surroundings
      • Is Matter Around Us Pure
      • Atoms and Molecules
      • Structure of the Atom
      • The Fundamental Unit of Life
    • Class 10
      • Chemistry
    • Class 11
      • Chemisrty
        • Chapter – 1 Some Basic Concepts of Chemistry
        • Chapter – 2 Structure Of Atom
        • Chapter – 3 Classification of Elements and Periodicity in Properties
        • Chapter – 4 Chemical Bonding and Molecular Structure
        • Chapter – 5 States of Matter
        • Chapter – 6 Thermodynamics
        • Chapter – 7 Equilibrium
        • Chapter – 8 Redox Reaction
        • Chapter – 10 s-Block Elements
        • Chapter – 13 Hydrocarbons
    • Class 12
      • Chemistry
        • The Solid State
        • Solutions
        • Electrochemistry
        • Chemical Kinetics
        • Surface Chemistry
        • p – Block Elements
        • d & f Block Elements
        • Coordination Compounds
        • Haloalkanes and Haloarenes
        • Alcohols, Phenols and Ethers
        • Aldehydes, Ketones and Carboxylic Acids
        • Amines
        • Biomolecules
        • Polymers
        • Chemistry in Everyday Life
    • Practice Questions
      • +1
      • +2
    • Test Series
      • Class 9 Test Series
      • Class 10 Test Series
      • Class 11 Test Series
      • Class 12 Test Series
    • World
      • Current Affairs
      • General Knowledge
    ScienceMotive
    Home » Metals and Non Metals Class 10 Important Questions (Worksheet Answers)

    Metals and Non Metals Class 10 Important Questions (Worksheet Answers)

    Dr. Vikas JasrotiaBy Dr. Vikas JasrotiaFebruary 19, 2023No Comments
    Share
    Facebook WhatsApp Telegram Twitter Email

    Metals and Non-Metals Class 10 Important Questions (Worksheet Answers)

    metals and non metals class 10 important questions with answers

    Ans 1. Calcium form hydrogen gas in reaction with water, bubbles of hydrogen gas stick to the calcium metal and that is why calcium floats in water.
    Ca(s) + 2H2O(l) → Ca(OH)2 (aq) + H2 (g)

    Ans 2. (a) Carbon makes it hard and strong. Tungsten also makes it hard and strong.
    (b) Mercury is alloyed with metals to form an amalgam.
    (c) Zinc metal is used for coating over iron metal to galvanise iron.
    (d) Silver articles acquire black coating when left exposed to the atmosphere.

    Ans 3. Sodium chloride is an ionic compound and it forms ions in water, therefore it is soluble in water whereas kerosene is a non-polar covalent compound, NaCl does not form ions in kerosene, therefore, it is insoluble in it.

    Ans 4. Copper is more reactive than Ag, therefore it can displace Ag from the AgNO3 solution.
    Cu(s) + 2AgNO3 (aq) → Cu(NO3)2 (aq) + 2Ag(s)

    Ans 5. (a) It is easier to reduce an oxide than sulphide and carbonate ores.
    (b) It is due to strong forces of attraction between positive and negative ions.
    (c) Hydrogen forms H+ ions like metals, therefore it is included in the activity series.
    (d) Zinc is more reactive than iron, therefore it will get easily oxidised in preference to Fe and hence protect the iron from rusting even if zinc coating is broken.

    Ans 6. The method is alloy formation, by adding a suitable metal or a non-metal. Alloy is. a homogeneous mixture of two or more metals. One of them can be a non-metal also. This process is called alloying.

    Ans 7. (a) They are soluble in water.
    (b) They are hard but brittle solids.
    (c) They conduct electricity in a solid state and in their aqueous solution.
    (d) They have high melting and boiling points

    Ans 8. (a) These metals get corroded. Silver forms black Ag2S (silver sulphide) and copper form a greenish layer of basic copper carbonate CuCO3. Cu(OH)2.
    (b) Tamarind contains acid which reacts with basic copper carbonate and the product gets dissolved and removed from the copper vessel.
    (c) Aluminium forms an oxide layer on its surface which does not further react with air.

    Ans 9. (a) These metals are extracted by electrolytic reduction, e.g. aluminium is obtained from bauxite by electrolytic reduction.
    (b) (i) Steel is made up of iron and carbon.
    (ii) Brass is made up of copper and zinc.

    Ans 10. (a) ‘X’ is ‘Al’
    2Al + Fe2O3 → Al2O3 + 2 Fe
    (b) AI2O3 reacts with acid as well as base therefore it is amphoteric oxide.
    Al2O3 + NaOH → NaAlO2 + H2O
    Al2O3 + 6 HCl → 2 AlCl3 + 3H2
    Zinc oxide is also an amphoteric oxide.
    (c) Bronze contains’ copper and tin.

    metals and non metals class 10 important questions with answers

    Ans 11. (d) Sodium > Magnesium > Zinc > Iron

    Ans 12. (d) Y is a non-metal and Z is a metal

    Ans 13. (d) Bubbles of hydrogen gas formed stick to the surface of calcium.

    Ans 14. (d) Al

    Ans 15. (c) No reaction takes place

    Ans 16. (a) The green solution slowly turns brown

    Ans 17. (b) It reacts with cold water to form magnesium oxide and evolves hydrogen gas

    Ans 18. (b) Aluminium

    Ans 19. (c) Hg

    Ans 20. (a) Silver and Copper

    Ans 21. (c) PVC

    Ans 22. (b) Carbon tetrachloride

    Ans 23. (b) Basic

    Ans 24. (d) Gallium and caesium

    Ans 25. (c) zinc is more reactive than tin

    Ans 26. (d) Iron

    Ans 27. (c) Amphoteric Oxides

    Ans 28. (b) (iii) and (iv)

    Ans 29. (d) Cu-Zn

    Ans 30. (b) Bubbles of hydrogen formed stick to the surface of the metal

    Ans 31. (d) Steel

    Ans 32. (c) Green

    Ans 33. (b) A large amount of energy is required to break the interionic attraction

    Ans 34. (c) (ii) and (iv)

    Ans 35. (d) Zn

    Ans 36. (b) In water

    Ans 37. (a) CO

    Ans 38. (b) Iron hammer turns brown after some time

    Ans 39. (b) 2HCl + Ba(OH)2 → BaCl2 + 2HOH

    Ans 40. (c) It catches fire and forms hydroxide.

    metals and non metals class 10 important questions with answers

    Advertisement
    Metals and Non Metals Class 10 Important Questions (Worksheet Answers) metals and non metals class 10 important questions with answers
    Share. Facebook Twitter Pinterest LinkedIn Tumblr Email
    Dr. Vikas Jasrotia
    • Website

    Related Posts

    Periodic Classification of Elements Questions PDF (Answers)

    March 1, 2023

    Periodic Classification of Elements Questions

    February 28, 2023

    Carbon and Its Compounds Class 10 Solutions of Practice Questions

    February 22, 2023

    Leave A Reply Cancel Reply

    READ ALSO

    Periodic Classification of Elements Questions PDF (Answers)

    March 1, 2023

    Periodic Classification of Elements Questions

    February 28, 2023

    Carbon and Its Compounds Class 10 Solutions of Practice Questions

    February 22, 2023

    Carbon and Its Compounds Class 10 Practice Questions

    February 21, 2023
    Class 10 Test Series

    Periodic Classification of Elements Questions PDF (Answers)

    By Dr. Vikas JasrotiaMarch 1, 2023

    Periodic Classification of Elements Questions PDF (Answers) Periodic Classification of Elements Questions PDF Ans 1.…

    Class 10 Test Series

    Periodic Classification of Elements Questions

    By Dr. Vikas JasrotiaFebruary 28, 2023

    Periodic Classification of Elements Questions Periodic Classification of Elements Questions Que 1. What is the…

    Class 10 Test Series

    Carbon and Its Compounds Class 10 Solutions of Practice Questions

    By Dr. Vikas JasrotiaFebruary 22, 2023

    Carbon and Its Compounds Class 10 Solutions of Practice Questions Carbon and Its Compounds Class…

    Advertisement
    Advertisement
    Facebook Twitter Instagram Pinterest YouTube
    • Disclaimer
    • Contact Us
    • Privacy Policy 
    • Terms and Conditions
    © 2023 All Rights Reserved ScienceMotive.

    Type above and press Enter to search. Press Esc to cancel.