11. The main type of bond found in organic compounds is:
a) Ionic bond
b) Metallic bond
c) Covalent bond
d) Hydrogen bond
Answer: c) Covalent bond
12. Which of the following is a characteristic feature of organic compounds?
a) Presence of metallic bonds
b) Ability to form complex ions
c) Presence of carbon-hydrogen bonds
d) Formation of ionic bonds
Answer: c) Presence of carbon-hydrogen bonds
13. The simplest hydrocarbon is:
a) Methane
b) Ethane
c) Propane
d) Butane
Answer: a) Methane
14. The process of forming a double bond between two carbon atoms is known as:
a) Hydrogenation
b) Dehydrogenation
c) Halogenation
d) Dehydration
Answer: b) Dehydrogenation
15. Which of the following is an example of a saturated hydrocarbon?
a) Ethylene
b) Acetylene
c) Butane
d) Propene
Answer: c) Butane
16. The general formula for alkanes is:
a) CnH2nC_nH_{2n}CnH2n
b) CnH2n+2C_nH_{2n+2}CnH2n+2
c) CnH2n−2C_nH_{2n-2}CnH2n−2
d) CnH2n+1C_nH_{2n+1}CnH2n+1
Answer: b) CnH2n+2C_nH_{2n+2}CnH2n+2
17. An alkene is a hydrocarbon with:
a) Single bonds only
b) Double bonds only
c) Triple bonds only
d) Both single and double bonds
Answer: b) Double bonds only
18. The IUPAC name for CH₃-CH₂-CH₂-CH₃ is:
a) Propane
b) Butane
c) Ethane
d) Pentane
Answer: b) Butane
19. Which of the following is an aromatic hydrocarbon?
a) Ethylene
b) Benzene
c) Methane
d) Propylene
Answer: b) Benzene
20. The functional group present in alcohols is:
a) Hydroxyl group
b) Carbonyl group
c) Carboxyl group
d) Amino group
Answer: a) Hydroxyl group
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