Please answer all questions

Q1: State whether the following statements are True or False, give your reason a) A compound with the s configuration is the (-) enantiomer. b) An achiral compound can have chiaral centers. c) An optically inactive substance must be achiaral. Q2: How can we decide whether an observed rotation of a solution of an optically active compound is +170 and not actually -190? 03: Give a simple reaction to distinguish cyclohexane from cyclohexene? Q4: a: Assign the absolute configuration of all chiral centers in molecules B and C by writing R or s directly adjacent to the chiral carbon. COOH COOH COOH COOH COOH H OH HO H H OH HO -H HO OH H -OH HO H HO H H OH H H COOH COOH COOH COOH COOH B D E b: List any pairs of enantiomers: c: List any pairs of identical molecules: d: List any pairs of diastereomers: e: List all meso compounds: f: List all dextrorotatory compounds