NCERT Section

Why does micelle formation take place when soap is added to water? Will a micelle be formed in other solvents such as ethanol also? 

Why are carbon and its compounds used as fuels for most applications? 

Explain the formation of scum when hard water is treated with soap.

What change will you observe if you test soap with litmus paper (blue or red)? 

What is hydrogenation? What is its industrial application?

Which of the following hydrocarbons undergo addition reactions ${\mathrm{C}}_2{\mathrm{H}}_6, {\mathrm{C}}_3{\mathrm{H}}_8, {\mathrm{C}}_3{\mathrm{H}}_6, {\mathrm{C}}_2{\mathrm{H}}_2$ and ${\mathrm{CH}}_4$?

Give a test that can be used to differentiate chemically between butter and cooking oil? 

Explain the mechanism of cleansing action of soaps.