Which of the following is a disaccharide?

Identify the trisaccharide from the following.

What is the nature of invert sugar?

Which among the following sugars is called as laevulose?

Statement $I$. Despite having an aldehyde group,glucose does not give the Schiff test.
Statement $II$. Glucose exists in $\alpha$ and $\beta$ crystalline forms.

Given $D$-Glucose. The compound$(s)$,which on reaction with $HNO_3$ will give the product having degree of rotation,$[\alpha]_{D}=-52.7^{\circ}$ is (are)