Which of the following compounds is identified by the 'Molisch test'?

Given below are two statements:
Statement $I:$ Fructose does not contain an aldehydic group but still reduces Tollen's reagent.
Statement $II:$ In the presence of base,fructose undergoes rearrangement to give glucose.
In the light of the above statements,choose the correct answer from the options given below:

$A$ molecule of glucose reacts with $x$ molecules of phenylhydrazine to form osazone. The value of $x$ is.........

Which among the following is the simplest carbohydrate?

Which of the following compounds will behave as a reducing sugar in an aqueous $KOH$ solution?

The disaccharide present in milk is