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level: Level 1 of Praticals

Questions and Answers List

level questions: Level 1 of Praticals

QuestionAnswer
reducing sugarbenedicts solution and heat Red – Reducing sugar present Blue – Reducing sugar not present
non reducing sugardo 1st test add an bendedicts and heat. ( reducing sugar) then add acid and heat to break the bonds add alkali (neutralise acid) add benedicts and heat Red –sugar present Blue – sugar not present
test for starchadd iodine to the substance a blue/black colour change should be observed
test for proteinAdd copper sulphate Add sodium hydroxide colour change to purple indicates present