Which one is a disaccharide?

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

Which of the following is a reducing sugar?

Glucose does not react with :-

Which of the following statements is incorrect?

According to the Fischer projection formulas,how are $\alpha-D-(+)-$glucose and $\beta-D-(+)-$glucose classified in relation to each other?