Sample Exam: Organic and Biochemistry (Q #1 - #17 are for Exam #4 and Q #18 - #21 are for Final Exam) 1. The name of the alkane below is a. pentane b. 2-methylpentane CH3 CH2 CH CH3 c. 2-methylbutane  d. 1,2 dimethylpropane CH3 e. 3-methylbutane 2. What is the correct name for the alkane shown below? CH3 a. 2,2,4-trimethylheptane  b. 2,2-dimethyl-4-propylpentane CH3  C  CH2  CH  CH3 c. decane   d. 2-propyl-4,4-dimethylpentane CH3 CH2 e. none of the above  CH2  CH3 3. How many different isomers are there for the dichlorocyclopropane? a. 1 b. 2 c. 3 d. 4 e. more than 4 4. What is the name of the compound shown below? CH3CH3 a. 1,3-dimethylbutane b. 2,4-dimethylcyclobutane c. 1,3-dimethylcyclobutane d. cyclohexane e. 1,2,3-trimethylcyclopropane 5. The compound named 2,2,5-trimethyloctane will have a condensed formula of CH3 a. CH3 CH2 CH2 CH CH2 CH2 C CH3 CH3 CH3 CH3 CH3 b. CH3 CH2 CH2 CH2 CH2 CH2 CH2 CH3 CH3 c. CH3 CH CH2 CH2 CH CH2 CH2 CH3 CH3 CH3 d. CH3 CH2 CH2 CH2 CH2 CH2 CH2 CH36. Which of the following pairs of molecules are NOT structural isomers? a. butane and 2-methylpropane b. pentane and methylcyclobutane c. 2,3-dimethylbutane and hexane d. 1,3-dichloropropane and 1,2-dichloropropane e. 1,1-dimethylcyclopropane and methylcyclobutane 7. What is the name of the compound shown below? a. 2-butene CH3 b. 1-pentene  c. 2-methyl-1-butene CH2 = CH CH CH3 d. 3-methyl-1-butene e. 2-methyl butane 8. Which of the following molecules would have a cis and trans isomer? a. CH3CH=CHCH3 b. (CH3)2C=CH2 c. CH3C≡CCH3 d. both a and b e. both a and c 9. What is the name of the compound shown below? ClCl a. 1,3-dichlorobenzene b. 1,5-dichlorobenzene c. 1,3-dichlorocyclohexane d. 2,4-dichlorobenzene e. 1.3-dichlorohexane 10. What is the name of this compound? CH CH2CH3OHCH3CH2 a. 3-pentanol b. 3-pentanone c. 3-pentanal d. pentanol e. pentanoic acid 11. Which compound can be oxidized? a. CH CH b. 3 2CHOCH CH2 c. 3COOHOHCH3 d. CH CH e. both a and d 3 2CHOHCH312. What is the name of the compound below? CH3CH2CHO a. propanal b. propanoic acid c. 1-propanol d. propanone e. propene 13. For small (C4 or less) organic compounds containing Oxygen, the functional groups that are very soluble in water are a. aldehydes and ketones b. alcohols and carboxylic acids c. esters and ethers d. alcohols and aldehydes e. ethers and ketones 14. The reaction below will produce + H2OH+ a. cylclopentane b. cyclopentanal c. cyclopentanone d. cyclopentanol e. no reaction 15. Which molecule has a chiral carbon? a. CH3CClCH3H b. CH3CClHCl c. CH CH d. 3OCH3CCH2CH3ClH e. none of these 16. What is the product of the reaction of CH3NH2 + HBr → ? a. CH3NH2+ + Br− b. CH3NH3+ + Br− c. CH3NH− + H2Br+ d. CH3NH2+ + HBr− e. N.R. 17. The reaction between CH3 CH2 CH2 CH2 OH and CH3 – C – OH will produce  O a. an amide b. an ether c. an ester d. an aldehyde e. no reaction18. The molecule below would be an example of a O  a. a ketopentose C – H b. an aldopentose  c. an alcohol H – C – OH d. an aldehyde  e. a ketone H – C – OH  H – C – OH  CH2OH 19. Amylose, a starch molecule, is an example of a a. monosaccharide b. disaccharide c. polysaccharide d. fatty acid e. amino acid 20. An unsaturated fatty acid is different from a saturated fatty acid because it contains a. at least one carboxyl group, - COOH b. at least one C double bond, - C = C - c. a glycerol molecule d. three fat molecules compared to one fat molecule e. additional -OH groups on the long chain. 21. All 20 amino acids contain a. an ester and an amide group b. a ketone and an amine group c. an alcohol and a carboxylic acid group d. an amine and a carboxylic acid group e. all amino acids are distinctly different in their structure Answers: 1C, 2A, 3B, 4C, 5A, 6B, 7D, 8A, 9A, 10A, 11E, 12A, 13B, 14D, 15D, 16B, 17C, 18B, 19C, 20B,