When glucose is heated with red phosphorous and hydroiodic acid it forms hexane. WHat conclusion is drawn from this observation regarding the structure of glucose?

Glucose on oxidation with Br _ 2 /water gives gluconic acid. What does this reaction indicate about the structure of glucose ?

On dropping a small piece of sodium in a test-tube containing carbon compound 'X' with molecular formula C_(2)H_(6)O , a brisk effervescence is observed and a gas Y is produced. On bringing a burning splinter at the mouth of the test-tube the gas evolved burns with a pop sound. Identify 'X' and 'Y'. Also write the chemical equation for the reaction. Write the name and structure of the product formed, when you heat 'X' with excess conc. sulphuric acid.

White phosphorous is heated with excess of dry chlorine to get X. X on hydrolysis finally forms an oxoacid of phosphorous Y. What are X and Y? What is the basicity of the acid ?

(i) What happens when potassium chlorate is heated in presence of MnO_(2) , write the equation for the reactions also. (ii) Draw the structure of sulphuric acid.

When sulphuric acid is added to 1g solid sodiumchloride taken in a test tube, which gas is released? What changes do you observe when you test the gas with dry and wet litmus paper? What conclusion do you draw by this experiment?