But many fashion experts say that anyone of any age can wear jeans as long as they're comfortable. But many people say they have a tough time finding the perfect pair of jeans. The survey said one in ten people over 53 try on six pairs and spend five days shopping for a new pair of jeans.
The iodoform test or iodoform reaction is a qualitative chemical test for the detection of ketones and aldehydes carrying an alpha methyl group. The reagents are iodine and sodium hydroxide.Only methyl ketones, or alcohols with the feature: CH3CH(OH)-R may undergo this reaction.The iodoform test or reaction is a chemical reaction where iodoform (CHI3) is produced by the multiple halogenation of a methyl ketone (a molecule containing the R-CO-CH3 group) in the presence of a base. R may be H, alkyl or aryl.
Ethanal is the only aldehyde to give the triiodomethane (iodoform) reaction. If Ris a hydrocarbon group, then you have a ketone. Lots of ketones give this reaction, but those that do all have a methyl group on one side of the carbon-oxygen double bond.These are known as methyl ketones.he chemistry of the triiodomethane (iodoform) reaction. What the triiodomethane (iodoform) reaction shows. A positive result-the pale yellow precipitate of triiodomethane (iodoform) - is given by an aldehyde or ketone containing the grouping: