Despite having an aldehydic group
Draw the Haworth structure of a-D-(+) gluco-pyranose

Draw the furanose ring structure of alpha -D- fructose

Despite having an aldehydic group What is the significance of D and (+) here?

Draw the structures of alpha -D-glucose and beta -D-glucose

Explain why : (i) Glucose is soluble in water but cyclohexane is not. (ii) Aldehyde group is absent in the pentaacetate of D-glucose.

How do you explain the absence of aldehyde group in the pentaacetate of D-glucose ?

The group having triangular planar structures is :

Write chemical reaction to show that open structure of D-glucose contains the following: (i) Straight chain (ii) Five alcohol groups (iii) Aldehyde as carbonyl group

(a) Name any three functional groups present in carbon compounds and write their formulae. (b) Draw the structures of the following compounds indicating the functional group present in each , propanal, propanone, propanoic acid, propanol

An element is placed in 2^("nd") group and 3^("rd") period of the periodic table, burns is presence of xygen of form a basic oxide (a) Identify the element (b) Write the electronic configuration (c) Write a balanced equation when it burns in the presence of air (d) Write a balanced when this oxide is dissolved in water (e) Draw the electron dot structure for the formation of this oxide.

Silicon is the second most abundant element (~27.2%) in the earth's after oxygen (45.5 %) Carbon. Silicon, germanium, tin and lead constitute the group 14 of the periodic table. Chemistry of silicon is distinctly different from that of carbon. For example, under standard conditions CO_(2) is a gas whereas SiO_(2) is a covalent solid. Draw the structure of a cyclic silicate having structural formula of [Si_(6)O_(18)]^(n-) .Also determine the value of n [Hint : SiO_(4)^(4-) can be shown as unit]