Which of the following statements is false?

Identify the correct statement about glucose from the following.

The number of chiral carbons present in sucrose is

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)

Treatment of $D$-glucose with aqueous $NaOH$ results in a mixture of monosaccharides,which are

Which of the following statements support the cyclic form for glucose?
$(i)$ It does not give Schiff's test.
$(ii)$ It is found to exist in two different crystalline forms.
$(iii)$ It oxidises with nitric acid to give saccharic acid.
$(iv)$ Pentaacetate of glucose does not react with hydroxylamine.