Home
Class 10
CHEMISTRY
Give reason for the following (i) Iro...

Give reason for the following
(i) Iron grills are frequently painted.
(ii) Gold ornaments retain their lustre even after several years of use.

Text Solution

Verified by Experts

(i) Iron metal easily gets rusted by air containing moisture and oxygen. Therefore, iron grills are frequently painted with rust proof paints.
(ii) Gold is a noble metal and is not affected by chemicals or by air. Therefore, gold ornaments retain their lustre even after several years.
Promotional Banner

Topper's Solved these Questions

  • METALS AND NON-METALS

    DINESH PUBLICATION|Exercise Long Answer Questions|23 Videos

  • METALS AND NON-METALS

    DINESH PUBLICATION|Exercise HOTS|7 Videos

  • METALS AND NON-METALS

    DINESH PUBLICATION|Exercise Very Short Answer Questions|67 Videos

  • CHEMICAL REACTIONS AND EQUATIONS

    DINESH PUBLICATION|Exercise Multiple Choice Questions|18 Videos

  • PERIODIC CLASSIFICATION OF ELEMENTS

    DINESH PUBLICATION|Exercise PBQs|28 Videos

Similar Questions

Explore conceptually related problems

Give reasons for the following : Ionic compounds have high melting points and boiling points. (ii) Ionic compounds conduct electricity in molten state. (iii) Ionic compounds are solids at room temperature and are somewhat hard. (iv) Ionic grills are frequently painted. (v) Gold ornaments retains their lustre even after several years of use.

Why do gold ornaments look new even after several years of use?

Give reasons for the following: Iron sheets are galvanized before use.

Give reasons for the following: Iron is used in construction of bridges and houses.

Give reason for the following: Silver, gold and platinum are used to make jewellery.

DINESH PUBLICATION-METALS AND NON-METALS-Short Answer Questions
  1. Write the names and symbols of two most reactive metals. Explain by dr...

    Text Solution

    |

  2. A metal 'X' acquires a green colour coating on its surface on exposure...

    Text Solution

    |

  3. Give reason for the following (i) Iron grills are frequently painte...

    Text Solution

    |

  4. In one method of rust prevention, the iron is not coated with anything...

    Text Solution

    |

  5. Compound X and aluminium are used to join railway tracks. (a) Idemjfy ...

    Text Solution

    |

  6. An ore on treatment with dilute hydrochloric acid produces brisk effer...

    Text Solution

    |

  7. State the property utilized in the following : (i) Graphite in maki...

    Text Solution

    |

  8. (i) Carbonate and sulphide ores are usually converted into oxides duri...

    Text Solution

    |

  9. The reaction of metal 'X' with Fe(2)O(3) is highly exothermic and is u...

    Text Solution

    |

  10. Aluminium oxide and zinc oxide react with both acids are bases to prod...

    Text Solution

    |

  11. Describe an activity to show that metals are good conductors of electr...

    Text Solution

    |

  12. (a) In the electrorefining of impure copper metal, what are used as ca...

    Text Solution

    |

  13. (a) What is an alloy ? How is it prepared ? Give two examples of alloy...

    Text Solution

    |

  14. Write one example each of the following metals : (a) Most malleable...

    Text Solution

    |

  15. A metal 'P' when exposed to moist air for longer period of times, lose...

    Text Solution

    |

  16. Name the constituents elements of the alloys (i) Brass (ii) Bronze (ii...

    Text Solution

    |

  17. Hydrogen gas is not evolved when most metals react with nitric acid. S...

    Text Solution

    |

  18. (a) Why are metals not generally found in their free state ? (b) If...

    Text Solution

    |

  19. Write balanced chemical equation for the reactions taking place when ...

    Text Solution

    |

  20. An element 'X' burns in oxygen to form an electrovalent compound XO. S...

    Text Solution

    |