Wha is the sweetness index of sucrose?

The enzyme sucrose synthase catalysis the synthesis of sucrose from:

The refractive index of air w.r.t glass is 2//3 .The refractive index of diamond w.r.t. air is 12//5 .What is the refrative index of glass w.r.t. diamond?

If refractive index of glass w.r.t. air is 1.55, then what is the refractive index of air w.r.t. glass.

What are oligosaccharides? Give the structure of sucrose and lactose.

What is the significance of refractive index?

A glass of refractive index 1.45 disappears when immersed in a liquid. What is the value of refractive index of the light?

What is the concentration of solution of sucrose (molar mass=342) which is isotonic with a solution containing 6 g of urea per litre?