Home
Class 12
CHEMISTRY
(A), (B) and (C) are three non-cyclic fu...

(A), (B) and (C) are three non-cyclic functional isomers of a carbonyl compound with molecular formula `C_4H_(8)O`. Isomers (A) and (C) give positive Tollens' test whereas isomer (B) does not give Tollens' test but gives positive Iodoform test. Isomers (A) and (B) on reduction with Zn(Hg)/conc. HCl give the same product (D).
(a) Write the structures of (A), (B), (C) and (D).
(b) Out of (A), (B) and (C) isomers, which one is least reactive towards addition of HCN ?

Text Solution

Verified by Experts

(a) Structures of A, B, C and D are given below :
`underset("Butanal-1")(A=CH_(3)CH_(2)CH_(2)CHO)`
`underset("Butan-2-one")(B=CH_(3)COCH_(2)CH_(3))`
`underset("2-Methylpropanal")(C=CH_(3)-underset(CH_(3))underset(|)(CH)-CHO)`
`underset("Butane")(D=CH_(3)CH_(2)CH_(2)CH_(3))`
(b) B i.e., `CH_3COCH_2CH_3` is the least reactive towards addition of HCN.
Doubtnut Promotions Banner Mobile Dark
|

Topper's Solved these Questions

  • ALDEHYDES, KETONES AND CARBOXYLIC ACIDS

    U-LIKE SERIES|Exercise LONG ANSWER QUESTIONS - II|44 Videos

  • ALDEHYDES, KETONES AND CARBOXYLIC ACIDS

    U-LIKE SERIES|Exercise SELF ASSESSMENT TEST (SECTION A)(MULTIPLE CHOICE QUESTIONS)(CHOOSE THE CORRECT OPTION)|2 Videos

  • ALDEHYDES, KETONES AND CARBOXYLIC ACIDS

    U-LIKE SERIES|Exercise SHORT ANSWER QUESTIONS|60 Videos

  • ALCOHOLS, PHENOLS AND ETHERS

    U-LIKE SERIES|Exercise SELF ASSESSMENT TEST (SECTION A)(MULTIPLE CHOICE QUESTIONS)(CHOOSE THE CORRECT OPTION)|6 Videos

  • AMINES

    U-LIKE SERIES|Exercise SELF ASSESSMENT TEST|6 Videos

Similar Questions

Explore conceptually related problems

(A), (B) and (C ) are three non-cylic funtional isomers of a carbonyl compound with molecular formula C_(4)H_(8)O . Isomers (A) and (C ) give positive Tollen's test whereas isomer (B) does not give Tollens' test but gives positive iodoform test. Isomers (A) and (B) on reduction with Zn(Mg) | conc. HCl give the same product (D). (a) Write the structures of (A), (B) ,(C) and (D). (b) Out of (A), (B) and (C ) isomers, which one is least reactive towards addition of HCN ?

(a) How do you convert the following (i) Ethanal to propanone (ii ) Toluene to benzoic acid (b) (A),(B ) and (C ) are three non cyclic functional isomers of a carbonyl compound with molecular formula C_4H_8 O . isomers (A) and (C) give positive Tollen's test whereas isomers (B) does not give Tollen's test but gives positive iodoform test , isomers (A) and (B) on reduction with Zn(Hg) /conc. HCl gives the same product (D) (i) Write the structures of (A), (B), (C) and (D) (ii) out of A,B and (C) isomers which one is least reactive towards additions of HCN

Knowledge Check

  • An organic compound of formula, C_(3)H_(6)O forms phenyl hydrazone, but gives negative Tollen's test . The compound is

    A
    `CH_(2) = CHOCH_(3)`
    B
    `CH_(3)CH_(2)CHO`
    C
    `CH_(3)COCH_(3)`
    D
    `CH_(2) = CHCH_(2)OH`

  • (A) A(C_(7)H_(14)) overset(O_(3)//Red)(rarr)B(C_(3)H_(6)O)+C (B) Gives positive Tollens test but negative iodform test. (C ) Give negative Tollens test but positive iodoform test. The compound (B) is:

    A
    a.
    B
    b.
    C
    c.
    D
    d.Both `(b)` and `(c )`

  • (A) A(C_(7)H_(14)) overset(O_(3)//Red)(rarr)B(C_(3)H_(6)O)+C (B) Gives positive Tollens test but negative iodform test. (C ) Give negative Tollens test but positive iodoform test. The compound (B) can be converted to (C ) by using the reagents:

    A
    a.i. `EtMgBr//H_(3)O^(o+)`, ii. `Acidic KMnO_(4)`
    B
    b.i. `MeMgBr//H_(3)O^(o+)`, ii. `Acidic KMnO_(4)`
    C
    c.i. `EtMgBr//H_(3)O^(o+)`, ii. `Aqueous KMnO_(4)`
    D
    d.i. `MeMgBr//H_(3)O^(o+)`, ii. `Aqueous KMnO_(4)`

    • Similar Questions

    Explore conceptually related problems

    (A), (B) and (C) are thrce non-cyclic fuactional isomsers of a carbonyl compound with molecular formula C4H8O Isomery (A) and (C) give positive. Tollens’ test whereas isomer (B) does not give Tollens’ test but gives positive Iodoform test. Isomers (A) and (B) on reduction with Zn/Hg – Conc. HCl give the same product (D). Write the structuress of (A), (B), (C) and (D).

    Draw the possible isomers of the compound with molecular formula C_(3)H_(6)O and also give their electron dot structures.

    What all the acylic structural isomers with the molecular formula C_(4)H_(10)O . Give their IUPAC names also.

    An organic compound of molecular formula C_(3)H_(6)O did not give a silver mirror with Tollens reagent but gave a positive Brady's test and positive iodoform test. It may be:

    Given are the isomers of C_(8)H_(8)O_(2) . Which isomer gives positive iodoform test?

    Home
    Profile