22.1 Multiple Choice Questions 1) Give the number of covalent bonds that a carbon atom can form. A) 1 B) 2 C) 3 D) 4 E) 5 2) Identify the formula for an alkene. A) CnH2n+2 B) CnH2n-2 C) CnH2n D) CnH2n-4 E) CnH2n+4 3) Identify the formula for an alkane. A) CnH2n+2 B) CnH2n-2 C) CnH2n D) CnH2n-4 E) CnH2n+4 4) Identify the formula for an alkyne. A) CnH2n+2 B) CnH2n-2 C) CnH2n D) CnH2n-4 E) CnH2n+4 5) Nonsuperimposable mirror images are called A) structural isomers. B) achiral. C) diastereomers. D) enantiomers. E) racemic mixture. 6) Molecules with the same formula but different structures are called A) structural isomers. B) achiral. C) diastereomers. D) enantiomers. E) racemic mixture. 7) An equimolar mixture of two optical isomers is called a A) structural isomer. B) achiral. C) diastereomer. D) enantiomer. E) racemic mixture. 8) Any molecule that exhibits optical isomerism is said to be A) a stereoisomer. B) a hydrocarbon. C) chiral. D) an alkyne. E) biologically active. 9) How many of the carbons in the following compound are chiral center(s)? A) 0 B) 1 C) 2 D) 3 E) 4 or more 10) How many of the carbons in the following compound are chiral center(s)? A) 0 B) 1 C) 2 D) 3 E) 4 or more 1