CBSE Worksheet for Chapter - 2 Metals And Non - Metals Class 8

Worksheets For class 8

Find CBSE Worksheet for chapter-2 Metals And Non - Metalstals class 8

  1. CLASS-8
  2. BOARD: CBSE
  3. Chemistry Worksheet - 2
  4. TOPIC: Metals And Non - Metalstals
  5. For other CBSE Worksheet for class 8 Science check out main page of Physics Wallah.

SUMMARY

  • Occurence of metals and non-metals, position in the periodic table.
  • Physical properties of metals and non-metals.
  • Chemical properties of metals and non-metals.
  • Reactivity series.
  • Uses of common metals and non-metals.

SECTION – 1

SECTION – 2

Now answer the following questions :

  1. . Which of the following is a good conductor of heat ?
    1. Bromine
    2. Chlorine
    3. Mercury
    4. Iodine
  2. . Which of the following non-metals occurs as a solid ?
    1. Sulphur
    2. Carbon
    3. Iodine
    4. All of these
  3. . Which of the following metals has very low melting point and melts even in hand ?
    1. Sodium
    2. Gallium
    3. Potassium
    4. Graphite
  4. . Tungsten is used in electric bulbs because –
    1. . it has high melting point
    2. . it is metallic
    3. . it has high tensile strength
    4. . it has high density
  5. . The metal which reacts with water only when it is red hot & steam is passed over it, is .
    1. Sodium
    2. calcium
    3. iron
    4. magnesium
  6. 6.Magnesium oxide is a –
    1. basic oxide
    2. acidic oxide
    3. neutral oxide
    4. None of these
  7. 7. When iron is heated with chlorine gas, the product of the reaction is –
    1. FeCl2
    2. Fe2Cl4
    3. FeCl3
    4. no reaction
  8. 8. Which of the following is an example of amphoteric oxide ?
    1. ZnO
    2. CO
    3. Fe2O3
    4. FeO
  9. 9. Which metals occur in their native state in nature ?
    1. . Only noble metals
    2. . Noble and coinage metals
    3. . Metals below hydrogen in the electrochemical series
    4. . Anymetal depending upon its location of occurrence
  10. 10. The non-metal which is used for the manufacture of fertilizers is-
    1. Chlorine
    2. Sulphur
    3. Phosphorus
    4. None of these
  11. 11. Which metal reacts with dilute hydrochloric acid to produce hydrogen ?
    1. Zinc
    2. Copper
    3. Silver
    4. Platinum
  12. 12. Name two metals which react with very dilute nitric acid to produce hydrogen gas.
  13. 13. A,B and C are three metals which undergo chemical reactions according to the following equations :
    1. . A2O + 2 B → B2O3 + 2A
    2. . 3CSO₄ + 2B→ B₂(SO₄)₃ + 3C
    3. . 3CO + 2A→A₂O₃ + 3C
    1. . which element is most reactive
    2. . which element is least reactive
    3. . arrange these element in the order of increasing reactivity.
  14. 14. Why are non-metals oxidizing agents ?
  15. 15. Name the most abundant non-metal and most abundant metal in earth crust.
  16. 16. Give the formula of non-metallic oxide which is known as laughing gas ?
  17. 17. Which property of graphite is utilized in making electrodes ?
  18. 18. Give example of two neutral and two acidic oxides of non-metals ?
  19. 19. Give reasons for the following :
    1. . Electrical wires cannot be made out of phosphorous.
    2. . A saucepan cannot be made from sulphur.

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