Write two isomers of molecular formula `C_3H_8O`. Which type of isomer is formed in this case? Give an example of organic polymer.

Give the structures of the isomers of molecular formula C_5H_(12) .

Write the isomers of the compound having formula C_(4)H_(9)Br .

Write the names and structures of the two alkenes (molecular formula: C_4H_8 ) which give the same compound when added to HBr in the absence of organic peroxide but different compounds when added to HBr in the presence of peroxide.

Which types of ligands form chelates? Give example.

Write all possible isomers with the molecular formula C_(4)H_(10)O and name them.

Write the structure of the isomers of alcohols with molecular formula C_(4)H_(10)O . Which of these exhibits optical activity ?

How many strutural isomers having molecular formula C_(3)H_(5)Br_(3) is possible?

How are n-type and p-type semiconductors formed ? Give one example in each case.

What are natural and synthetic polymers? Give two examples of each type.

CoSO_(4)Cl.5NH_(3) exists in two isomeric forms 'A' and 'B'. Isomer 'A' reacts with AgNO_(3) to give white precipitate, but does not react with BaCl_(2) . Isomer 'B' gives white precipitate with BaCl_(2) but does not react with AgNO_(3) . Answer the following questions. (i) Identify 'A' & 'B' and write their structural formulas. (ii) Name the type of isomerism involved. (iii) Give the IUPAC name of 'A' and 'B'.