Blood sugar is the same as

When glucose reacts with bromine water,the main product is

$CHO-(CHOH)_4-CH_2OH \xrightarrow{Br_2/H_2O} P$; $P$ is:

Methyl $-\alpha-D$-glucoside and methyl $-\beta-D$-glucoside are both ...... .

Which of the following statements is correct?

Glucose or sucrose are soluble in water but cyclohexane or benzene (simple six-membered ring compounds) are insoluble in water. Explain.