Explain the formation of scum when hard water is treated with soap.
While cooking, if the bottom of the vessel is getting blackened on the outside, it means that
People use a variety of methods to wash clothes. Usually after adding the soap, they ‘beat’ the clothes on a stone, or beat it with a paddle, scrub with a brush or the mixture is agitated in a washing machine. Why is agitation necessary to get clean clothes ?
How many structural isomers can you draw for pentane ?
What change will you observe if you test soap with litmus paper (red and blue)?