Home
Class 11
CHEMISTRY
Lime is heated with at 2000^@ the produ...

Lime is heated with ____ at `2000^@` the product is treated with water to liberate ethyne.

A

charcoal

B

coke

C

graphite

D

diamond

Text Solution

Verified by Experts

The correct Answer is:
B

`CaO +3Coverset(2000^@C)toCaC_2CO`
`CaC_2+2H_2OtoHC-=CH+Ca(OH)_2`
Promotional Banner

Topper's Solved these Questions

Similar Questions

Explore conceptually related problems

When SO_(3) is treated with heavy water the product/a is /are

When phenol is treated with Br_(2) -water, the product is

Aniline is reacted with bromine water and the resulting product is treated with an aqueous solution of sodium nitrite in presence of hydrochloric acid The compound so formed is converted into a tetrafluoroborate which is subsequently heated The final product is .

A mixture of alumina and coke is heated in a current of nitrogen to about 1800^(@)C and the product obtained treated with water.A gas is evolved.The gas is :

In an industrial process, coke is heated with quicklime in an electric furnace and th cooled product is then treated with water to produce

R SHARMA-ALKYNES-Question Bank
  1. How many alkynyl group are possible with the formula C3H3^(-)?

    Text Solution

    |

  2. The number of sigma-and pi-bond in 1-buten-3-yne is:

    Text Solution

    |

  3. Lime is heated with at 2000^@ the product is treated with water to li...

    Text Solution

    |

  4. Acetylene is allowed to react with an excess of HCl in the presence of...

    Text Solution

    |

  5. Which of the dihalides undergo a double dehydroahalogenation to give a...

    Text Solution

    |

  6. Monosidium acetylide is treated with benzyl bromide. The product forme...

    Text Solution

    |

  7. 1,2-dibromopropane is heated with one mole of alcoholic KOH. The react...

    Text Solution

    |

  8. 2,3-dibromobutane is treated with sodium amide (excess) in liquid ammo...

    Text Solution

    |

  9. Stilbene (C6H6=CHC6H5) reacts with (Br2)/(CCl4) and the resulting prod...

    Text Solution

    |

  10. CH3C-=C CH3underset(CaCO3 and BaSO4)overset((H2)/(Pd))to p Identifty t...

    Text Solution

    |

  11. Which of the followig reagents may be used to distinguish between but-...

    Text Solution

    |

  12. The total number of isomers possible for the formula C3H4 is

    Text Solution

    |

  13. Chloroethene is treated with sodium amide in liquid ammonia. The major...

    Text Solution

    |

  14. Al4C3,Mg2C3 and CaC2 are hydrolyzed separately. The hydrocarbons forme...

    Text Solution

    |

  15. CH-=CHunderset(Hg^(2+))overset(CH3CO2H(2mol))toAoverset(Heat)toB The f...

    Text Solution

    |

  16. Which of the following is least preffered to make higher alkynes fom s...

    Text Solution

    |

  17. HC-=Chunderset(1mol)overset(NaNH2)toAunderset((2)H2O)overset((1)H2CO)t...

    Text Solution

    |

  18. Br2CHCHBr2underset(C2H5OH,Delta)overset(Zn(1mol))toP Identify the ma...

    Text Solution

    |

  19. HC-=Chunderset(1mol)overset(Na)toAoverset(D2O)toB Identify the final...

    Text Solution

    |

  20. A hydrocarbon (A) reacts with sodium amide and then with ethylbromide ...

    Text Solution

    |