ORGANIC CHEMISTRY EXAMINATION QUESTIONS AND
CORRECT ANSWER WITH EXPLANATION GRADED A+
STUDY GUIDE SOUTHERN NEW HAMPSHIRE UNIVERSITY
1. Organic chemistry is the study of:
A. Carbon compounds
B. Metals only
C. Rocks
D. Water only
Answer: A
Rationale: Organic chemistry focuses on carbon-based compounds.
2. The element central to organic chemistry is:
A. Carbon
B. Oxygen
C. Hydrogen
D. Nitrogen
Answer: A
Rationale: Carbon forms stable covalent bonds.
3. Hydrocarbons contain:
A. Carbon and hydrogen
B. Oxygen only
C. Nitrogen only
D. Metals only
Answer: A
Rationale: Hydrocarbons are C and H compounds.
4. Alkanes are:
A. Saturated hydrocarbons
B. Unsaturated hydrocarbons
C. Acids
D. Alcohols
Answer: A
Rationale: Only single bonds present.
5. Alkenes contain:
A. At least one double bond
, B. Only single bonds
C. Triple bonds only
D. No bonds
Answer: A
Rationale: Unsaturated hydrocarbons.
6. Alkynes contain:
A. Triple bonds
B. Single bonds only
C. No bonds
D. Ionic bonds
Answer: A
Rationale: Carbon-carbon triple bonds.
7. The general formula of alkanes is:
A. CₙH₂ₙ₊₂
B. CₙH₂ₙ
C. CₙH₂ₙ₋₂
D. CₙHₙ
Answer: A
Rationale: Formula for saturated hydrocarbons.
8. The general formula of alkenes is:
A. CₙH₂ₙ
B. CₙH₂ₙ₊₂
C. CₙH₂ₙ₋₂
D. CₙHₙ₊₂
Answer: A
Rationale: One double bond reduces hydrogen count.
9. The general formula of alkynes is:
A. CₙH₂ₙ₋₂
B. CₙH₂ₙ
C. CₙH₂ₙ₊₂
D. CₙHₙ
Answer: A
Rationale: Triple bond reduces hydrogen further.
10. Functional group in alcohols is:
A. –OH
, B. –COOH
C. –CHO
D. –NH₂
Answer: A
Rationale: Hydroxyl group defines alcohols.
11. Functional group in carboxylic acids is:
A. –COOH
B. –OH
C. –NH₂
D. –CHO
Answer: A
Rationale: Carboxyl group.
12. Functional group in aldehydes is:
A. –CHO
B. –OH
C. –COOH
D. –NH₂
Answer: A
Rationale: Terminal carbonyl group.
13. Functional group in ketones is:
A. C=O in middle carbon
B. –OH
C. –COOH
D. –NH₂
Answer: A
Rationale: Carbonyl group inside chain.
14. Amines contain:
A. –NH₂ group
B. –OH group
C. –COOH group
D. –CHO group
Answer: A
Rationale: Nitrogen-containing compounds.
15. Functional groups determine:
A. Chemical properties
CORRECT ANSWER WITH EXPLANATION GRADED A+
STUDY GUIDE SOUTHERN NEW HAMPSHIRE UNIVERSITY
1. Organic chemistry is the study of:
A. Carbon compounds
B. Metals only
C. Rocks
D. Water only
Answer: A
Rationale: Organic chemistry focuses on carbon-based compounds.
2. The element central to organic chemistry is:
A. Carbon
B. Oxygen
C. Hydrogen
D. Nitrogen
Answer: A
Rationale: Carbon forms stable covalent bonds.
3. Hydrocarbons contain:
A. Carbon and hydrogen
B. Oxygen only
C. Nitrogen only
D. Metals only
Answer: A
Rationale: Hydrocarbons are C and H compounds.
4. Alkanes are:
A. Saturated hydrocarbons
B. Unsaturated hydrocarbons
C. Acids
D. Alcohols
Answer: A
Rationale: Only single bonds present.
5. Alkenes contain:
A. At least one double bond
, B. Only single bonds
C. Triple bonds only
D. No bonds
Answer: A
Rationale: Unsaturated hydrocarbons.
6. Alkynes contain:
A. Triple bonds
B. Single bonds only
C. No bonds
D. Ionic bonds
Answer: A
Rationale: Carbon-carbon triple bonds.
7. The general formula of alkanes is:
A. CₙH₂ₙ₊₂
B. CₙH₂ₙ
C. CₙH₂ₙ₋₂
D. CₙHₙ
Answer: A
Rationale: Formula for saturated hydrocarbons.
8. The general formula of alkenes is:
A. CₙH₂ₙ
B. CₙH₂ₙ₊₂
C. CₙH₂ₙ₋₂
D. CₙHₙ₊₂
Answer: A
Rationale: One double bond reduces hydrogen count.
9. The general formula of alkynes is:
A. CₙH₂ₙ₋₂
B. CₙH₂ₙ
C. CₙH₂ₙ₊₂
D. CₙHₙ
Answer: A
Rationale: Triple bond reduces hydrogen further.
10. Functional group in alcohols is:
A. –OH
, B. –COOH
C. –CHO
D. –NH₂
Answer: A
Rationale: Hydroxyl group defines alcohols.
11. Functional group in carboxylic acids is:
A. –COOH
B. –OH
C. –NH₂
D. –CHO
Answer: A
Rationale: Carboxyl group.
12. Functional group in aldehydes is:
A. –CHO
B. –OH
C. –COOH
D. –NH₂
Answer: A
Rationale: Terminal carbonyl group.
13. Functional group in ketones is:
A. C=O in middle carbon
B. –OH
C. –COOH
D. –NH₂
Answer: A
Rationale: Carbonyl group inside chain.
14. Amines contain:
A. –NH₂ group
B. –OH group
C. –COOH group
D. –CHO group
Answer: A
Rationale: Nitrogen-containing compounds.
15. Functional groups determine:
A. Chemical properties
