Question

Which of the following pairs give positive Tollens’ test?

• A. Sucrose, glucose
• B. Fructose, sucrose
• C. Fructose, glucose
• D. Starch, maltose

Answer 1

The correct option is C Fructose, glucose

The simple trick to this question is to find out the pair that has only reducing sugars. They will answer Tollen’s test positively.

The following is how the carbohydrates react to Tollen’s test.

a. Sucrose- negative

b. Fructose- positive

c. Glucose - positive

d. Maltose- negative

Hence, Fructose and glucose will give a positive Tollen’s test.