Home
Class 12
CHEMISTRY
When limestone is heated, CO(2) is given...

When limestone is heated, `CO_(2)` is given off. The metallurgical operation is

A

smelting

B

reducting

C

calcination

D

roasting

Text Solution

Verified by Experts

The correct Answer is:
C
Conversion of an ore (carbonate) into its oxide by heating in absence of air is called calcination.
`underset("Limestone")(CaCO_(3))overset(Delta)rarr underset(underset("oxide")("Calcium"))(CaO) + CO_(2) uarr`
Promotional Banner

Topper's Solved these Questions

  • KARNATAKA CET 2012

    KCET PREVIOUS YEAR PAPERS|Exercise CHEMISTRY|60 Videos

  • KARNATAKA CET 2014

    KCET PREVIOUS YEAR PAPERS|Exercise CHEMISTRY|58 Videos

Similar Questions

Explore conceptually related problems

When a metal is heated, its resistance

When HCOONa is heated to 390^(@) C, it gives

When n -type of semicoductor is heated,

When CO_(2) is added to PEP. The first stabel product synthesised is

KCET PREVIOUS YEAR PAPERS-KARNATAKA CET 2013-Chemistry
  1. If 50% of the reactant is converted into a product in a first order re...

    Text Solution

    |

  2. The number of optical isomers of the compound, CH(3)-underset(Br)under...

    Text Solution

    |

  3. When limestone is heated, CO(2) is given off. The metallurgical operat...

    Text Solution

    |

  4. The rate of reaction increases with rise in temperature because of

    Text Solution

    |

  5. Meso compounds do not show optica activity because :

    Text Solution

    |

  6. When formic acid is heated with concentrated H(2)SO(4), the gas evolve...

    Text Solution

    |

  7. The temperature coefficient of a reaction is 2. When the temperature i...

    Text Solution

    |

  8. Conversion of benzene to acetophenone can be brought by

    Text Solution

    |

  9. Excess of PCl(5) reacts with conc , H(2)SO(4) giving

    Text Solution

    |

  10. An example for a neutral buffer is :

    Text Solution

    |

  11. Least energetic conformation of cyclohexane is

    Text Solution

    |

  12. Which of the following is employed in flash tubes in photography?

    Text Solution

    |

  13. Conjugate base of H(2)PO(4)^(-) is

    Text Solution

    |

  14. An alkyl bromide (X) reacts with sodium in ether to form 4,5-diethyloc...

    Text Solution

    |

  15. Which one of the following shows highest magnetic moment?

    Text Solution

    |

  16. The emf of a galvanic cell constituded with the electrodes Zn^(2+)//Zn...

    Text Solution

    |

  17. Which of the following pairs are correctly matched?

    Text Solution

    |

  18. In a transition series, with the increase in atomic number, the parama...

    Text Solution

    |

  19. Identify a species which is 'NOT' a Bronsted acid but a Lewis acid.

    Text Solution

    |

  20. The compound formed when calcium acetate and calcium formate is dry di...

    Text Solution

    |