Chapter 4 :
Hydrocarbons
a)
Methane
b) Ethane
c) Propane
d) Butane
Answer: a) Methane
2. Alkanes are also known as?
a)
Aromatic hydrocarbons
b) Saturated hydrocarbons
c) Unsaturated hydrocarbons
d) Cyclic hydrocarbons
Answer: b) Saturated hydrocarbons
3.Which of the
following is an alkene?
a)
C2H6
b) C3H8
c) C4H10
d) C2H4
Answer: d) C2H4
4. The general formula for alkanes is?
a)
CnH2n
b) CnH2n+2
c) CnH2n-2
d) CnHn
Answer: b) CnH2n+2
5. Which
hydrocarbon is a component of natural gas?
a)
Ethane
b) Methane
c) Butane
d) Propane
Answer: b) Methane
6.What type of bonds do alkanes have?
a)
Single bonds
b) Double bonds
c) Triple bonds
d) Aromatic bonds
Answer: a) Single bonds
7.Which of the
following hydrocarbons is a member of the alkyne series?
a)
Ethane
b) Ethylene
c) Acetylene
d) Propylene
Answer: c) Acetylene
8. The process of breaking down large hydrocarbons into smaller ones is called?
a)
Polymerization
b) Cracking
c) Hydrogenation
d) Substitution
Answer: b) Cracking
9.Which
hydrocarbon is used as a fuel for cooking?
a)
Methane
b) Propane
c) Ethylene
d) Benzene
Answer: b) Propane
10. Which of the following is an aromatic
hydrocarbon?
a)
Methane
b) Ethane
c) Benzene
d) Propylene
Answer: c) Benzene
11.Alkenes are also known as?
a)
Saturated hydrocarbons
b) Unsaturated hydrocarbons
c) Aromatic hydrocarbons
d) Cyclic hydrocarbons
Answer: b) Unsaturated hydrocarbons
12. The chemical formula of ethylene is?
a) C2H6
b) C2H4
c) C3H8
d) C4H10
Answer: b) C2H4
13. What is the main use of hydrocarbons?
a) As
solvents
b) As fuels
c) In food
d) In textiles
Answer: b) As fuels
14. Which of the following is a saturated
hydrocarbon?
a)
Ethylene
b) Acetylene
c) Propane
d) Benzene
Answer: c) Propane
15. Which of the following processes is used
to separate hydrocarbons in petroleum?
a)
Filtration
b) Distillation
c) Chromatography
d) Crystallization
Answer: b) Distillation
16.Which hydrocarbon is used to make
plastics?
a)
Methane
b) Propylene
c) Butane
d) Ethane
Answer: b) Propylene
17. The main component of LPG (Liquefied Petroleum Gas) is?
a)
Methane
b) Ethane
c) Propane
d) Butane
Answer: c) Propane
18. Which of the following hydrocarbons
contains a triple bond?
a)
Ethylene
b) Acetylene
c) Propane
d) Benzene
Answer: b) Acetylene
19. The molecular formula of butane is?
a) C3H8
b) C4H10
c) C5H12
d) C6H14
Answer: b) C4H10
20. Which of the following hydrocarbons is a
gas at room temperature?
a)
Methane
b) Hexane
c) Octane
d) Nonane
Answer: a) Methane
21. Which hydrocarbon is known as marsh gas?
a)
Methane
b) Ethane
c) Propane
d) Butane
Answer: a) Methane
22.What is the main source of hydrocarbons?
a) Air
b) Water
c) Soil
d) Petroleum
Answer: d) Petroleum
23. Which of the following is not an alkane?
a)
Methane
b) Ethane
c) Propylene
d) Butane
Answer: c) Propylene
24.The chemical formula of propane is?
a) C3H8
b) C4H10
c) C2H6
d) CH4
Answer: a) C3H8
25. Which of the following is a property of
hydrocarbons?
a) High
solubility in water
b) Good conductors of electricity
c) Combustible
d) Non-combustible
Answer: c) Combustible
26. Which hydrocarbon is commonly used in
welding torches?
a)
Methane
b) Ethane
c) Acetylene
d) Propane
Answer: c) Acetylene
27. Which of the following is a structural
isomer of butane?
a)
Propane
b) Ethane
c) Isobutane
d) Methane
Answer: c) Isobutane
28. Which hydrocarbon is known for its use in
dry cleaning?
a)
Methane
b) Ethylene
c) Benzene
d) Acetylene
Answer: c) Benzene
29. Alkynes contain how many hydrogen atoms
compared to alkanes with the same number of carbon atoms?
a)
The same number
b) Two more
c) Two less
d) Four less
Answer: c) Two less
30. Which of the following hydrocarbons is found in crude oil?
a)
Methane
b) Butane
c) Octane
d) Propane
Answer: c) Octane
No comments:
Post a Comment