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Positive Tollen's test is observed for...

Positive Tollen's test is observed for

A

B

C

D

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The correct Answer is:
A, B, C
Tollens's test is given by compounds having aldehyde group. Also `alpha-` hydroxy carbonyl gives positive tollen's test.
`(C) `Ph-underset("Benzoin")underset(OH)underset(|)CH-underset(O)underset(||)C-Phunderset("reagent")overset("Tollen's")rarrPh-underset(O)underset(||)C-underset(O)underset(||)C-Ph+Ag "mirror" (+ve "test")`
(D) `PhCH=CH-underset(O)underset(||)C-Phunderset("reagent")overset("Tollen's")rarr"No reaction"` (-ve test)
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Positive Tollen 's test is oberveved for

(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) 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 (C ) is:

(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 (A) is:

(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(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:

ALLEN-ALKENE, ALKANE & ALKYNE -EXERCISE-5[B]
  1. In the following reaction Compound X is :

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  2. In the following reactoins The major compound Y is

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  3. Positive Tollen's test is observed for

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  4. The major product of the following reaction sequence is :

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  5. The major product of nitration of Benzoic acid is -

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  6. The organic product formed in the reaction C(6) H(5) COOH overset ((I...

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  7. Which of the following carboxylic acids undergoes decarboxylation easi...

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  8. The molecular weight of benzoic acid in benzene as determined by depre...

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  9. CH(3)CH(2)CO OHunderset("Red P")overset(Br(2))to[X]overset(NH(3)(alc.)...

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  10. Among the given compounds, the most susceptible to nucleophilic attack...

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  11. Statement-I: Acetic acid does not undergo haloform reaction. Because...

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  12. When propionic acid is treated with aqueous sodium bicarbonate, CO(2) ...

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  13. Benzoyl chloride is prepared from benzoic acid by

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  14. Which of the following acids has the smallest dissociation constant-

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  15. formed by P & Q can be differentiated by :

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  16. What is X?

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  17. Compound (A) C(5)H(8)O(2) liberated CO(2) on reaction with sodium bica...

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  18. An organic compound (A) on treatment with acetic acid in the presence ...

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  19. Compound (A) (C(6)H(12)O(2)) on reduction with LiAlH(4) yielded two co...

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  20. The sodium salt of a carboxylic acid (A) was produced by passing a gas...

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