Q1. Choose the set of true statements from the following: (I) Vinegar is an aqueous solution of 5% to 8% acetic acid. (II) Hydrolysis of fat gives glycerol and carboxylic acid. (III) Teflon is used as a solvent. (IV) The chemical formula of washing powder is CaOCl2.
A I, II Correct
B II, III
C III, IV
D I, IV
Explanation
Vinegar is commonly an aqueous solution containing about 5% to 8% acetic acid, so the first statement is true. Hydrolysis of fats breaks ester bonds and produces glycerol along with fatty acids, which are carboxylic acids, so the second statement is also true. Teflon is a chemically resistant polymer used in non-stick coatings and insulation, not as a solvent. CaOCl2 is bleaching powder; washing powder is a detergent mixture, so the fourth statement is false.