Which statements are correct about lactose?A. IUPAC name of lactose is `beta-` galactopyranosyl-`beta`-D-glucopyranoside.B. IUPAC name of lactose is `beta-D`-glucopyranosyl `beta-D`- galactopyranosideC. On methylation with `MeOH//HCl`, it gives methyl-`beta`- D-glactopyranosyl- `beta`-D-glucopyranoside.D. On methylation with `MeOH//HCl`, it gives methyl- `beta`-D-glucopyranosyl-`beta`-D-galactopyranoside.

Which statements are correct about lactose?A. IUPAC name of lactose is

1.	Which statements are correct about lactose?A. IUPAC name of lactose is `beta-` galactopyranosyl-`beta`-D-glucopyranoside.B. IUPAC name of lactose is `beta-D`-glucopyranosyl `beta-D`- galactopyranosideC. On methylation with `MeOH//HCl`, it gives methyl-`beta`- D-glactopyranosyl- `beta`-D-glucopyranoside.D. On methylation with `MeOH//HCl`, it gives methyl- `beta`-D-glucopyranosyl-`beta`-D-galactopyranoside.
Answer» Correct Answer - A::B::C Since `C-1 OH` group in `beta-D-`glucose is hemiacetalic, so with `MeOH//HCl`, this `OH` group is methylated to form acetal. Thus with `beta-D-`glucose, the word glucopyranoside is named.