Glucose +x Phenyl hydrazine → Osazone 'x' will be:

1.  2
2.  3
3.  4
4.  1

The compound that does not reduce Fehling solution is:
1. Glucose
2. Fructose
3. Sucrose
4. Maltose

A compound that gives a positive Fehling solution test is: 

Which is the correct statement among the following?

Among the following, reducing sugar is:

1. Galactose

2. Gluconic acid

3. β-methyl galactoside

4. Sucrose