Home
Class 10
CHEMISTRY
Heating an ore in a limited supply of ai...

Heating an ore in a limited supply of air or in the absence of air at a temperature just below its melting point is known as:

A

smelting

B

ore dressing

C

calcination

D

bessemerisation

Text Solution

Verified by Experts

The correct Answer is:
C

Calcination
Promotional Banner

Topper's Solved these Questions

  • CHEMISTRY 2014

    ICSE|Exercise SECTION-II|55 Videos
  • CHEMISTRY 2012

    ICSE|Exercise SECTION-II|46 Videos
  • CHEMISTRY-2013

    ICSE|Exercise SECTION-II (40 Marks) |48 Videos

Similar Questions

Explore conceptually related problems

In calcination, ore is heated strongly in the absence of air

Assertion: Durig calcination the ore is heated well below its melting point in the limited supply of air or absence of air. Reason: The process of calcination is carried out for sulphide ores.

Roasting is a process in which the ore (mostly sulphide) is heated strongly in the presence of excess of air. The heating should be done at a temperature below the melting point of the ore. Select of correct statement :

Roasting is a process in which the ore (mostly sulphide) is heated strongly in the presence of excess of air. The heating should be done at a temperature below the melting point of the ore. 2PbS + 3O_(2) rarr A + 2SO_(2) The name of A is.

Roasting is a process in which the ore (mostly sulphide) is heated strongly in the presence of excess of air. The heating should be done at a temperature below the melting point of the ore. Sometimes roasting may not bring about complete oxidation : 2CuFeS_(2) + 4O_(2) rarr A + 2FeO + 3SO_(2) Find the A :

If heat a supplied to a solid, its temperature

The melting points of most of the solid substances increases with an increase of pressure acting on them However, ice melts at a temperature lower than its usual melting point, when the pressure increases. This is Because :

Heating of ore in presence of air to remove sulphure impurities is called

The process of heating the ore strongly in excess of air so that the volatile impurities are removed and the ore is changed to oxide is known as

The diagram below shows the change of phases of a substance on a temperature vs time graph on heating the substance at a constant rate. What is the boiling and melting point of the substance ?

ICSE-CHEMISTRY 2014-SECTION-II
  1. Heating an ore in a limited supply of air or in the absence of air at ...

    Text Solution

    |

  2. State one appropriate observation for the following: When dilute hyd...

    Text Solution

    |

  3. State your observation in the following case: When excess sodium hyd...

    Text Solution

    |

  4. At the cathode when acidified aqueous copper sulphate solution ...

    Text Solution

    |

  5. State your observation in the following case: When calcium hydroxide i...

    Text Solution

    |

  6. State your observation in the following case : When moist starch i...

    Text Solution

    |

  7. Study the figure given below and answer the question that follow : ...

    Text Solution

    |

  8. Study the figure given below and answer the questions that follow : ...

    Text Solution

    |

  9. Study the figure given below and answer the questions that follow : ...

    Text Solution

    |

  10. Name the other ion formed when ammonia dissolves in water.

    Text Solution

    |

  11. Give one test that can be used to detect the presence of the ion produ...

    Text Solution

    |

  12. State the conditions required for the following reactions to take plac...

    Text Solution

    |

  13. State the conditions required for the following reactions to take plac...

    Text Solution

    |

  14. State the condition required for the following reaction to take place ...

    Text Solution

    |

  15. State the conditions required for the following reaction to take place...

    Text Solution

    |

  16. State the main components of the following alloys: Brass

    Text Solution

    |

  17. State the main components of the following alloys: Duralumin

    Text Solution

    |

  18. State the main components of the following alloys: Bronze

    Text Solution

    |

  19. Give balanced equation for the following: Laboratory preparation of ...

    Text Solution

    |

  20. Give balanced equations for the following: (i) Preparation of ethano...

    Text Solution

    |

  21. Draw the structural formula for the following compounds : Ethanol

    Text Solution

    |