<prompt> Which test is given positive by Glyceraldehyde?Benedicts testMolischs testSeliwanoffs testGerhards test  <response>: Ans. A. Benedicts testGlyceraldehyde is a monosaccharide. All monosaccharides are reducing sugars. All reducing sugars gives positive Benedicts test.Molischs test is a general test for all the carbohydrate but it is positive if number of carbons are 5 or more. Glyceraldehyde contains only 3 carbons.Seliwanoffs test is positive for keto sugars. Glyceraldehyde is an aldehyde.Gerhards test Rotheras test are positive for ketone bodies. 