Glucose cannot be classified as which of the following?

The correct corresponding order of names of four aldoses with configurations given below,respectively,is:
$(1)$ $CHO-CH(OH)-CH(OH)-CH_2OH$ (both $-OH$ on right)
$(2)$ $CHO-CH(OH)-CH(OH)-CH_2OH$ ($-OH$ on left at $C-2$,right at $C-3$)
$(3)$ $CHO-CH(OH)-CH(OH)-CH_2OH$ (both $-OH$ on left)
$(4)$ $CHO-CH(OH)-CH(OH)-CH_2OH$ ($-OH$ on right at $C-2$,left at $C-3$)

Sucrose is

What is the hydrolytic conversion of sucrose into glucose and fructose called?

Polysaccharides have .............. linkage?

On the basis of which evidences,$D$-Glucose was assigned the following structure: $CHO-(CHOH)_4-CH_2OH$?