Why is it necessary to boil the sodium extract with conc. HNO3 before testing the halogen?
It is boiled with concentrated nitric acid to decompose any sodium cyanide or sodium sulphide present in the compound containing nitrogen or sulphur also. 
Which characteristic is common to different isomers of a compound?
Name three alkanes which do not show chain isomerism.
Name the types of structural isomerism shown by alkanes.
Name the four main types of structural isomerism.
Write the three possible open chains of five carbon atoms
What types of structural isomerism is shown by the following pairs of organic compounds ?
Draw the structure of the tautomer of phenol and write its IUPAC name.
Define ring - chain isomerism. Given one example.?
Write the metamer of diethyl ether ?
Mock Test Series
