Glucose gives a silver mirror with ammoniacal silver nitrate because it has:

$\alpha-$ and $\beta-$ glucose are examples of ...... .

Which of the following statements is not correct?

Which of the following pairs of carbohydrates contains $galactose$ in both of them as one of the constituents?

Which of the following represents the anomer of the compound shown?

Which of the following pentoses will be optically active?
$I$: $CHO-CH(OH)-CH(OH)-CH(OH)-CH_2OH$
$II$: $CHO-CH(OH)-CH(OH)-CH(OH)-CH_2OH$
$III$: $CHO-CH(OH)-CH(OH)-CH(OH)-CH_2OH$