Glucose gives a positive test with

What are the two forms of $D$-glucopyranose obtained from $D$-glucose called?

Select the incorrect pair.

$A$ sugar '$X$' dehydrates very slowly under acidic conditions to give furfural,which on further reaction with resorcinol gives a coloured product after some time. Sugar '$X$' is

How many secondary hydroxyl groups are present in glucose?

What is glycogen? How is it different from starch?