Home
Class 11
CHEMISTRY
Steatement -I: Acrolein containing alde...

Steatement -I: Acrolein containing aldehyde group undergoes aldol condensation with alkali.
Statement -II The duoble bond breaks when treated with `NaOH` . `H_(2)C=CH-CHOoverset(NaOH)to HCHO+CH_(3)CHO`

A

Both the statements are true and statement- II is the correct explanation of statement -I.

B

Both statements are true but statement -II is not the correct explanation of statement -I.

C

Statement-I is true but statement -II is falsae

D

Statement -I is false but statement- II is true

Text Solution

Verified by Experts

The correct Answer is:
4

`H_(2)C=CH-CHOoverset(OH^(-))toHCHO+CH_(3)CHO`
Promotional Banner

Topper's Solved these Questions

  • CARBONYL COMPOUNDS

    NARAYNA|Exercise LEVEL-IV|37 Videos
  • CARBONYL COMPOUNDS

    NARAYNA|Exercise LEVEL-I(H.W)|19 Videos
  • CARBONYL COMPOUNDS

    NARAYNA|Exercise LEVEL -III|54 Videos
  • BENZENE

    NARAYNA|Exercise Level-6|121 Videos
  • CHEMICAL BONDING AND MOLECULAR STRUCTURE

    NARAYNA|Exercise EXERCISE -4|54 Videos

Similar Questions

Explore conceptually related problems

(CH_(3))_(3) C - CHO does not undergo aldol condensation due to

Statement -I: (CH_(3))_(2)CHCHO mainly undergoes Cannizzare reaction when heated with strong alkali. Statement-II:Steric hindrance prevents aldol condensation.

Which of the following will not form aldol when treated with dilute NaOH. (A) \(CH_{3}CHO\) (B) \((CH_{3})_{3}CCHO\) (C) \(PhCH_{2}\)CHO

The compound that reacts with NaOH . (A) CH_(3)OH (B) CH_(3)CH_(2)OH (C) C_(6)H_(5)OH (D) C_(6)H_(5)CH_(2)OH

Number of possible intra molecular aldol condensation product on heating with NaOH H_(3)C-overset(O)overset(||)(C)-CH_(2)-CH_(2)-CH_(2)-overset(O)overset(||)(C)-H

Statement -I: CH_(3)CHO on reaction with dil NaOH forms Aldol product Statement -II Aldehydes and Ketones having prop hydrogen undergo Aldol condensation.

The additon reaction of enol or enolate to the carbonyl function of aldehyde or ketone is known as aldol addition . The beta -hydroxyaldehyde or beta- hydroxyketone so obtained undergo dehydration in second step to produce a conjugated enone. The first part of reaction is an addition reaction and the second part is an elimination reaction. Carbonyl compound having alpha -hydrogen undergoes aldol condensation reaction . 2CH_(3)CH_(2)-overset(O)overset(||)C-Hunderset(Delta)overset(""^(Ө)OH)rarrCH_(3)CH_(2)CH=underset(CH_(3))underset(|)C-overset(O)overset(||)C-H Which of the following will give aldol condensation ?

The following does not undergo aldol condensation in the presence of alkali (A) CH_(3)CHO (B) CH_(3)COCH_(3) (C) C_(2)H_(5)CHO (D) HCHO

NARAYNA-CARBONYL COMPOUNDS-STATEMENT TYPE
  1. Statement-I :HCHO and HCOOH can be distingushed by Tollen's test ...

    Text Solution

    |

  2. Statement-I: CH(3)COCH(2)COCH(3) does not respond to the iodoform test...

    Text Solution

    |

  3. Steatement -I: Acrolein containing aldehyde group undergoes aldol con...

    Text Solution

    |

  4. Statement -I: (CH(3))(2)CHCHO mainly undergoes Cannizzare reaction whe...

    Text Solution

    |

  5. Statement -I: The acetal formation with ketones does not respond to ba...

    Text Solution

    |

  6. Assertion: (CH(3))(3)C COC(CH(3))(3) and acetone can be distanguished ...

    Text Solution

    |

  7. Assertion : 2, 2- Dimethylpropanal undergoes Cannizzaro reaction with ...

    Text Solution

    |

  8. Assertion : Aldol condensation can be catalysed both by acids and base...

    Text Solution

    |

  9. Statement -I: Crossed Cannizzaro reaction between formaldehyde and ben...

    Text Solution

    |

  10. (A) Carbonyl compounds take part in nucleophilic addition reactions. ...

    Text Solution

    |

  11. Statement -I : Secondary alcohols can be easily oxidised to aldehydes....

    Text Solution

    |

  12. Assertion: The addition of ammonia derivative to a carbonyl compound i...

    Text Solution

    |

  13. Statement -I: Fehling ' s reagent is a test for all aliphatic aldehyde...

    Text Solution

    |

  14. Statement -I: Propanal undergoes Cannizzaro 's reaction. Statemen...

    Text Solution

    |

  15. Statement -I: Nitromethane can give aldol condensation. Statement...

    Text Solution

    |

  16. Assertion : Chloral hydrate is a stable compound. Reason : It is sta...

    Text Solution

    |

  17. (A) Acetaldehyde does not show aldol condensation. (R) Compounds ha...

    Text Solution

    |

  18. (A) Lower aldehydes and ketones are soluble in water but solubility de...

    Text Solution

    |

  19. Statement -I: CH(3)CHO on reaction with dil NaOH forms Aldol produc...

    Text Solution

    |

  20. Statement -:I: Acetaldehyde on reaction with H(2)SO(4) at room t...

    Text Solution

    |