Page 06 14. CH3CH2Br + NH3 ↓ CH3CH2NH2 + HBr CH3Br + OH− ↓ CH3OH + Br− The nucleophiles in these two reactions are A CH3Br and NH3 B OH− and CH3CH2Br C CH3CH2Br and CH3Br D NH3 and OH−. 15. A compound X has a GFM of less than 100 g. Complete combustion of compound X produces carbon dioxide and water only. Reduction of compound X produces a secondary alcohol. Compound X is most likely to be A B C D H3C C C2H5 O H C C2H5 O H3C C CH2Cl O H3C C C6H5 O Page 07 16. Amine Boiling point (°C) C2H5N(CH3)2 37·5 (C2H5)2NH 56·3 C4H9NH2 77·8 Based on the information in the table, A the tertiary amine has the highest boiling point B the secondary amine has the lowest boiling point C the primary amine has a lower boiling point than the tertiary amine D the secondary amine has a lower boiling point than the primary amine. 17. Compound Y reacts with the product of its own oxidation to form an ester. Compound Y could be A propanal B propan-1-ol C propan-2-ol D propanoic acid. 18. Which of the following statements about benzene is correct? A The benzene molecule is planar. B Benzene does not react with electrophiles. C Benzene readily undergoes nucleophilic attack. D The benzene molecule contains carbon to carbon bonds of two different lengths. 19. Chlorine has two isotopes, 35Cl and 37Cl. These isotopes are present in a sample of 1,1,1-trichloroethane, C2H3Cl3. The number of molecular ion peaks expected in the mass spectrum of 1,1,1-trichloroethane is A 6 B 4 C 3 D 2. [Turn over