Home
Class 12
CHEMISTRY
Assertion: equimolar mixture of conc. HC...

Assertion: equimolar mixture of conc. `HCI` and anhydrous zinc chloride is called Lucas reagent.
Reason: Lucas reeagent can be used to distinguish between methanol and ethanol.

A

If both assertion and reason are true and the reason is the correct explanantion of the assertion.

B

If both assertion and reason are true but reason is not the correct explanantion of the asseriton.

C

If assertion is true but reason is false.

D

If assertion if false but reason is ture.

Text Solution

Verified by Experts

The correct Answer is:
C

Correct Reason: Both methanol and ethanol are `1^(@)` alcohol and hence cannot be distinhuished by Lucas reagnet.
Promotional Banner

Topper's Solved these Questions

  • ALCOHOLS, PHENOLS AND ETHERS

    A2Z|Exercise AIPMT/NEET Questions|27 Videos
  • ALCOHOLS, PHENOLS AND ETHERS

    A2Z|Exercise AIIMS Questions|22 Videos
  • ALCOHOLS, PHENOLS AND ETHERS

    A2Z|Exercise Ethers|34 Videos
  • ALDEHYDES, KETONES AND CARBOXYLIC ACID

    A2Z|Exercise Section D - Chapter End Test|30 Videos

Similar Questions

Explore conceptually related problems

Assertion : Lucas reagent is a mixture of conc. HCl and anhydrous ZnCl_(2) . Reason : Lucas reagent can distinguish methanol from ethanol.

Which of the following paris can be distinguished by using Lucas reagent?

Give reasons for the following (a) No visible reaction occurs when aluminium is left in contact with conc HNO_(3) . (b) The hydroxides of Al and Fe are insoluble in water. However, NaOH is used to distinguish one from another. ( c) Anhydrous AlCl_(3) cannot prepared by heating hydrated aluminium chloride. (d) Aluminium vessels should not be cleaned with cleansing agent containing washing soda. ( e) Duralumin is used in aircraft industry.

Read the passage given below and answer the following questions: Reduction of carboxylic acids and their derivatives plays an important role in organic synthesis, in both laboratory and industrial processes. Traditionally, the reduction is performed using stochiometric amounts of hydride reagents, generating stochiometric amounts of waste. A much more attractive, atom-economical approach is a catalytic reaction using H_2 , however, hydrogenation of carboxylic acid derivatives under mild conditions is a very challenging task, with amides presenting the highest challenge among all classes of carbonyl compounds. Very few examples of the important hydrogenation of amides to amines, in which the C-O bond is cleaved with the liberation of water (Scheme 1), were reported. C-O cleavage of amides can also be affected with silanes as reducing agents. We have now prepared the new, dearomatized, bipyridine-based pincer complex 3, catalyst 3(Here refered as Cat. 3). Remarkably, it efficiently catalyzes the selective hydrogenation of amides to form amines and alcohols (eq 1). The reaction proceeds under mild pressure and neutral conditions, with no additives being required. Since the reaction proceeds well under anhydrous conditions, hydrolytic cleavage of the amide is not involved in this process. (Balaraman, E., Gnanaprakasam, B., Shimon, L. J., & Milstein, D. (2010). Direct hydrogenation of amides to alcohols and amines under mild conditions. Journal of the American Chemical Society, 132(47), 16756-16758.) In the following questions, a statement of assertion followed by a statement of reason is given. Choose the correct answer out of the following choices on the basis of the above passage. Assertion: N-methyl ethanamide on reaction with catalyst 3 will yield ethanol and methanamine. Reason: Use of Catalyst 3 brings about cleavage of C-N bond of amides

A2Z-ALCOHOLS, PHENOLS AND ETHERS-Section B - Assertion Reasoning
  1. Assertion: Solubility of n-alcohol in water decreases with increases i...

    Text Solution

    |

  2. Assertion: p-dimethoxybenzene is polar. Reason: The different oriena...

    Text Solution

    |

  3. Assertion: C(2)H(5)O is more reactive than C(2)H(5)CI. Reason: I bei...

    Text Solution

    |

  4. Assertion: Ethanol is more viscous than glycerol. Reason: Both posse...

    Text Solution

    |

  5. Asserion: A small amount of ethanol is added to CHCI(3) bottles. Rea...

    Text Solution

    |

  6. Assertion: Alcohols cannot be dried by CaCI(2). Reason: CaCI(2) form...

    Text Solution

    |

  7. Asseriton: Methanol is stronger acid than water. Reason: All alcohol...

    Text Solution

    |

  8. Assertion: Acid cataysed dehydration of t-butanol is faster than n-but...

    Text Solution

    |

  9. Assertion: Alcohols give only substitution products with HX and not el...

    Text Solution

    |

  10. Assertion: p-nitrophenol is a stronger acid than o-nitrophenol. Reas...

    Text Solution

    |

  11. Assertion: o-and p-nitrophenol can be separated by steam distillation....

    Text Solution

    |

  12. Assertion: Alcohol and ohenol can be distinguished by sodium hydroxide...

    Text Solution

    |

  13. Assertion: Isobutanal does not give iodoform test. Reason : It does ...

    Text Solution

    |

  14. Assertion: m-Methoxyphenol is a stronger acid than p-methoxyphenol. ...

    Text Solution

    |

  15. Assertion: 2-Phentanol and 3-pentanol cannot be distinguished by iodof...

    Text Solution

    |

  16. Assertion: equimolar mixture of conc. HCI and anhydrous zinc chloride ...

    Text Solution

    |

  17. Assertion: Anisole undergoes eletctrophilic substitution at o-and p-po...

    Text Solution

    |

  18. Assertion: Alcohols have higher boiling points than ethers of comparab...

    Text Solution

    |

  19. Assertion. t-Buty1 Methyl ether is not prepared by rthe reaction of t-...

    Text Solution

    |

  20. Assertion: Benzenediazonium chloride on boiling with water gives pheno...

    Text Solution

    |