The pair of compounds in which both the compounds give positive test with Tollen’s reagent is

Question

The pair of compounds in which both the compounds give positive test with Tollen’s reagent is (A) glucose and sucrose (B) fructose and sucrose (C) acetophenone and hexanal (D) glucose and fructose

Tardigrade Admin · Accepted Answer

Both aldoses (glucose) and fructose can reduce Tollen’s reagent. So option

(D)

is correct.
In other options only

1

can do it for example in option

(a)

glucose, in option

(b)

fructose and option

(c)

only hexanal. Fructose can reduce Tollen's reagent due to its enolisation.

Q. The pair of compounds in which both the compounds give positive test with Tollen’s reagent is

glucose and sucrose

fructose and sucrose

acetophenone and hexanal

glucose and fructose

Both aldoses (glucose) and fructose can reduce Tollen’s reagent. So option (D) is correct. In other options only 1 can do it for example in option (a) glucose, in option (b) fructose and option (c) only hexanal. Fructose can reduce Tollen's reagent due to its enolisation.

Both aldoses (glucose) and fructose can reduce Tollen’s reagent. So option $(D)$ is correct.
In other options only $1$ can do it for example in option $(a)$ glucose, in option $(b)$ fructose and option $(c)$ only hexanal. Fructose can reduce Tollen's reagent due to its enolisation.