NCEA Level 3 - Organic Chemistry Exam Questions
with Correct Solution
1. Cis correct answer: Isomer with same group on same side
2. Trans correct answer: Isomer with same group on ditterent sides
3. Addition correct answer: Reaction where double bond is broken and atoms are added into the
molecule
4. Elimination correct answer: Reaction where atoms are removed from molecule and a double bond
forms
5. Oxidation correct answer: Reaction where molecule gains an O atom or loses an H atom
6. Substitution correct answer: Reaction where atom in a molecule are exchanged for other atoms
7. Alkane correct answer: Addition reaction of alkene and hygrogen produces an...
8. Haloalkane correct answer: Addition reaction of alkene and a halide produces a...
9. Alcohol correct answer: Addition reaction of alkene and water (requires H2SO4) produces
10. Polymerisation correct answer: Adding together many molecules of ethene to form long
chain molecules called polymers
11. Markovnikov's Rule correct answer: Determines the major and minor product of an
addition reaction involving an
unsymmetrical alkene. Rich gets richer.
12. Alkene correct answer: Functional group is
carbon-carbon double bond. Suflx -ene
13. Alkyne correct answer: Functional group is
carbon-carbon triple bond. Suflx -yne
14. Alcohol correct answer: Functional
group is hydroxyl group -OH Suflx -anol
15. 4 correct answer: Alcohols up to _ carbons long are soluble in mater because they can
establish a hygrogen bond with a neighbouring water molecule.
16. Primary Alcohol correct answer: Oxidised to form aldehydes then further to form
carboxylic acid (use Cr2O7 2-/H+ acidified dichromate or MnO4-/H+ permanganate)
17. Secondary Alcohol correct answer: Oxidise to form ketones (use Cr2O7 2-/H+
acidified dichromate or MnO4-/H+ per- manganate)
18. Substitution correct answer: Preparation of alcohol usuing NaOH or KOH
19. Addition correct answer: Preparation of alcohol using H2SO4 (hydration)
20. Chloroalkane correct answer: Product of substitution reaction of alcohol using PCl5, PCl3 or
SOCl2
1/
3
with Correct Solution
1. Cis correct answer: Isomer with same group on same side
2. Trans correct answer: Isomer with same group on ditterent sides
3. Addition correct answer: Reaction where double bond is broken and atoms are added into the
molecule
4. Elimination correct answer: Reaction where atoms are removed from molecule and a double bond
forms
5. Oxidation correct answer: Reaction where molecule gains an O atom or loses an H atom
6. Substitution correct answer: Reaction where atom in a molecule are exchanged for other atoms
7. Alkane correct answer: Addition reaction of alkene and hygrogen produces an...
8. Haloalkane correct answer: Addition reaction of alkene and a halide produces a...
9. Alcohol correct answer: Addition reaction of alkene and water (requires H2SO4) produces
10. Polymerisation correct answer: Adding together many molecules of ethene to form long
chain molecules called polymers
11. Markovnikov's Rule correct answer: Determines the major and minor product of an
addition reaction involving an
unsymmetrical alkene. Rich gets richer.
12. Alkene correct answer: Functional group is
carbon-carbon double bond. Suflx -ene
13. Alkyne correct answer: Functional group is
carbon-carbon triple bond. Suflx -yne
14. Alcohol correct answer: Functional
group is hydroxyl group -OH Suflx -anol
15. 4 correct answer: Alcohols up to _ carbons long are soluble in mater because they can
establish a hygrogen bond with a neighbouring water molecule.
16. Primary Alcohol correct answer: Oxidised to form aldehydes then further to form
carboxylic acid (use Cr2O7 2-/H+ acidified dichromate or MnO4-/H+ permanganate)
17. Secondary Alcohol correct answer: Oxidise to form ketones (use Cr2O7 2-/H+
acidified dichromate or MnO4-/H+ per- manganate)
18. Substitution correct answer: Preparation of alcohol usuing NaOH or KOH
19. Addition correct answer: Preparation of alcohol using H2SO4 (hydration)
20. Chloroalkane correct answer: Product of substitution reaction of alcohol using PCl5, PCl3 or
SOCl2
1/
3
