sgdfg

15. Which of the following is the product from the dehydration of an alcohol? a. alkane b. alkene c. aldehyde d. ketone

b. alkene

6. CH3CH2CHCH3 is a ׀ Cl a. primary alkyl halide b. secondary alkyl halide c. tertiary alkyl d. methyl halide

b. secondary alkyl halide

10. Which of the following is both the correct bond angle and molecular geometry around a carbon atom with four single bonds? a. 1200, tetrahedral b. 1200, planar c. 109.50, tetrahedral d. 109.50, planar

c. 109.50, tetrahedral

13. How many electrons are shared in a triple bond? a. 1 b. 2 c. 6 d. 4

c. 6

29. Polarizability is highest for _____. a. CH4 b. H2 c. CCl4 d. H2S

c. CCl4

25. Non-polar atoms and molecules condense due to _____. a. ion-dipole interaction c. polarizability dispersion forces b. van der Waals forces d. dipole-dipole attraction

c. polarizability dispersion forces

12. The general formula for an ester is a. ROR' b. RCOOH c. RCOR' d. RCOOR'

d. RCOOR'

22. Carboxylic acids are more acidic than alcohols because a. of the increased polarity of the O-H bond due to the carbonyl group b. of the stability of the carboxylate anion formed upon ionization c. of the greater value of Ka d. all of the above

d. all of the above

27. Which element can take part in hydrogen bonding? a. F b. O c. N d. all of them

d. all of them

21. What is formed when an alcohol reacts with a carboxylic acid? a. ester b. anhydride c. acid chloride d. thioester

a. ester

17. Alkanes react primarily by a. free radical substitution c. electrophilic addition b. electrophilic substitution d. nucleophilic addition

a. free radical substitution

16. Which of the following contains a tertiary carbon? a. 2,2-dimethylpropane b. 3-methylheptane c. 2-pentene d. a, b and c

b. 3-methylheptane

28. Only dispersion forces are present in _____. a. HF b. C6H6 c. CO d. C2H5OH

b. C6H6

20. Aldehydes and ketones generally react by a. nucleophilic addition c. electrophilic addition b. nucleophilic substitution d. electrophilic substitution

a. nucleophilic addition

7. SN2 means a. two step nucleophilic substitution mechanism involving both alkyl halide and nucleophile b. one step nucleophilic substitution mechanism involving both alkyl halide and nucleophile c. two step nucleophilic substitution mechanism involving only the alkyl halide d. one step nucleophilic substitution mechanism involving only the nucleophile

a. one step nucleophilic substitution mechanism involving both alkyl halide and nucleophile

1. Benzene owes its unusual stability to a. pi electron delocalization over and above the six carbon ring b. alternating single and double bonds c. stereochemistry d. carbon being sp2 hybridized

a. pi electron delocalization over and above the six carbon ring

2. Benzene and its derivatives undergo substitution reactions instead of addition reactions because a. the integrity of the benzene ring and the stable pi-bonding pattern remains intact b. the hydrogens of benzene are relatively loosely bound c. the benzene ring is sterically crowded hence only substitution can occur d. the benzene ring is electron rich

a. the integrity of the benzene ring and the stable pi-bonding pattern remains intact

5. The position adjacent to the substituent in a mono-substituted benzene derivative is a. the ortho position b. the meta position c. the para position d. All

a. the ortho position

8. Which alkyl halide will most likely undergo SN1 mechanism? a. 1-bromobutane b. 2-bromo-2-methylpropane c. bromomethane d. 2-bromobutane

b. 2-bromo-2-methylpropane

33. Which of the following has the lowest boiling point? a. CH3COCH3 b. CH3OCH3 c. CH3COOH d.CH3CHO

b. CH3OCH3

32. The hydrocarbon having the lowest boiling point is _____. a. C4H10 b. CH4 c. C6H6 d. C2H6

b. CH4

31. The force due to hydrogen bonding must be overcome in the boiling of _____. a. CH3OCH3 b. NH3 c. SbH3 d.C2H5OC2H5

b. NH3

18. The simplest ketone is a. ethyl methyl ketone b. acetone c. lactone d. cyclohexanone

b. acetone

30. A compound which hydrogen bonds is _____. a. BeH2 b. CH4 c. CH3COOH d. C2H6

c. CH3COOH

4. AlCl3 is a catalyst used in the alkylation of aromatic compounds. It is a a. a Lowry-Bronsted acid b. an Arrhenius acid c. a Lewis acid d. a Lewis base

c. a Lewis acid

9. Which alkyl halide will most likely undergo SN2 mechanism? a. 1-bromobutane b. 2-bromo-2-methylpropane c. bromomethane d. 2-bromobutane

c. bromomethane

23. An example of a trihydric alcohol is a. ethyl alcohol b. glycol c. glycerol d. isopropyl alcohol

c. glycerol

19. The carbonyl group of aldehydes and ketones is very reactive because a. the ‒C=O bond is electron rich c. the ‒C=O bond is polar b. the oxygen has two nonbonding pairs d. all of these

d. all of these

11. The functional group for organic acids is the a. hydroxyl group b. amine group c. carbonyl group d. carboxyl group

d. carboxyl group

24. Dipole-dipole interactions are present in _____. a. HCl b. C6H6 c. CH4 d. NaCl

a. HCl

14. 14. Hydrogenation of an alkene yields a. alkane b. alkyne c. alcohol d. aldehyde

a. alkane

3. Electrophiles are a. electron deficient species b. electron rich species c. electrically neutral species d. positively charged ion

a. electron deficient species