Home
Class 11
CHEMISTRY
Assertion : Lassaigne's tests is not sho...

Assertion : Lassaigne's tests is not shown by diazonium salts.
Reason : Diazonium salts lose `N_(2)` on heating much before they have a chance to react with fused sodium.

A

If both (A) and (R ) are correct and (R ) is the correct explanation of (A)

B

If both (A) and (R ) are correct, but (R ) is not the correct explanation of (A)

C

If (A) is correct, but (R ) is incorrect

D

If both (A) and (R ) are incorrect

Text Solution

Verified by Experts

The correct Answer is:
A
Promotional Banner

Topper's Solved these Questions

  • ORGANIC CHEMISTRY : SOME BASIC PRINCIPLES - PART III (PURIFICATION AND CHARACTERISATION OF ORGANIC COMPOUNDS)

    BRILLIANT PUBLICATION|Exercise LEVEL-II|40 Videos

  • ORGANIC CHEMISTRY : SOME BASIC PRINCIPLES - PART II (ISOMERISM AND REACTION MECHANISM)

    BRILLIANT PUBLICATION|Exercise LEVEL-II (ASSERTION-REASON TYPE)|20 Videos

  • ORGANIC CHEMISTRY: BASIC PRINCIPLES - PART I (NOMENCLATURE)

    BRILLIANT PUBLICATION|Exercise LEVEL-II |41 Videos

Similar Questions

Explore conceptually related problems

Assertion : For preparation of phenol from diazonium salt, benzene diazonium hydrogen sulphate is better than benzene diazonium chloride. Reason : This is an S_(N)1 reaction so Cl^(Theta) may attack phenyl cation, producing some chlorobenzene.

Arene diazonium salts are more stable than alkanediazonium salts due to dispersal of the positive charge on the benzene ring. Obviously, electron-donating groups favour diazotisation by retarding the decomposition of diazonium salts to phenyl cation. The high reactivity of arenediazonium salts is due to the excellent leaving ability of the diazo group as N_2 gas. Which of the following arylamines undergoes diazotisation most readily?

Arene diazonium salts are more stable than alkanediazonium salts due to dispersal of the positive charge on the benzene ring. Obviously, electron-donating groups favour diazotisation by retarding the decomposition of diazonium salts to phenyl cation. The high reactivity of arenediazonium salts is due to the excellent leaving ability of the diazo group as N_2 gas. Consider the following ions: The reactivity of these ions towards azo coupling reactions under similar conditions is

An organic compound A on treatment with CHCl_3 and KOH gives two compounds B and C . Both B an C give the same product (D) when distilled with zinc dust. Oxidation of D gives E . having molecular formula C_7 H_6 O_2 . The sodium salt of E on heating with soda lime gives F which may also be obtained by distilling A with zinc dust. Identify A to F ,

Diazonium salt decompose as : C_(6)H_(5)N_(2)CI^(-)rarrC_(6)H_(5)CI+N_(2) At 0^(@) C the evolution of N_(2) becomes two times faster when the initial concentration of the salt is doubled. Thus, it is

BRILLIANT PUBLICATION-ORGANIC CHEMISTRY : SOME BASIC PRINCIPLES - PART III (PURIFICATION AND CHARACTERISATION OF ORGANIC COMPOUNDS) -LEVEL-II (ASSERTION-REASON TYPE)
  1. Assertion : Sulphur present in an organic compound can be estimated qu...

    Text Solution

    |

  2. Assertion : Simple distillation can help in separating a mixture of pr...

    Text Solution

    |

  3. Assertion : Oils are purified by steam distillation. Reason : The co...

    Text Solution

    |

  4. Assertion : NH(2)-oversetoverset(S)("||")(C)-NH(2) gives red colour in...

    Text Solution

    |

  5. Assertion : Lassaigne's tests is not shown by diazonium salts. Reaso...

    Text Solution

    |

  6. Assertion : In organic layer test, Cl(2) water is added to the sodium ...

    Text Solution

    |

  7. Assertion : Mixed melting point can be used to test the purity of an o...

    Text Solution

    |

  8. Assertion : Impure glycerine is purified by vacuum distillation. Rea...

    Text Solution

    |

  9. Assertion : Criteria of purity of an organic liquid is its boiling poi...

    Text Solution

    |

  10. Assertion : Glycerol is purified by distillation under reduced pressur...

    Text Solution

    |

  11. Assertion : Paper chromatography is a type of partition chromatography...

    Text Solution

    |

  12. Assertion : Components of a mixture of red and blue inks can be separa...

    Text Solution

    |

  13. Assertion : A mixture of o-nitrophenol and p-nitrophenol can be separa...

    Text Solution

    |

  14. Assertion : Ethanol and water mixture cannot be completely separated b...

    Text Solution

    |

  15. Assertion : Nitrogen cannot be estimated in nitrobenzene by Kjeldahl's...

    Text Solution

    |