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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
Both aldehydes & `alpha`-hydroxyketones show positive Tollen's test. The compound (d) is not `alpha`-hydroxy-ketone and it does exhibit positive iodoform test. Compounds (a), (b) and (c ) exhibit
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(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 ?

Tollen's reagent is

Tollen's reagent is

In the following questions , a statement of assertion (A) is followed by a statement of reason (R). Br A: Glucose gives positive Tollen's test. R: Glucose gives a reddish brown precipitate of CuO with Fehling's solution

(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:

(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:

Fehling test is positive for