<Description: Practice Class 10 Chemistry Chapter 12 MCQs on Hydrocarbons. These important objective questions are based on FBISE exam pattern and include alkanes, alkenes, alkynes, petroleum, and combustion reactions.
1. Hydrocarbons are compounds containing:
2. Which hydrocarbon is saturated?
3. Alkenes contain:
4. The general formula of alkynes is:
B)
C)
D)
5. The main source of hydrocarbons is:
6. The simplest alkane is:
7. Which hydrocarbon is unsaturated?
8. The formula of propane is:
B)
C)
D)
9. Fractional distillation is used to separate:
10. Which gas is commonly known as marsh gas?
11. Ethyne is commonly called:
12. The process of breaking large hydrocarbons into smaller molecules is:
13. Hydrocarbons generally burn in air to produce:
and 
B)
and 
C)
and 
D)
and 
14. Which hydrocarbon contains a triple bond?
15. The major component of natural gas is:
16. Which hydrocarbon belongs to alkene series?
17. Petrol is obtained from petroleum by:
18. The formula of butane is:
B)
C)
D)
19. Which hydrocarbon is used in welding?
20. Hydrocarbons containing only single bonds are:
21. Which fraction of petroleum is used as fuel in jet aircraft?
22. The formula of ethane is:
B)
C)
D)
23. Which hydrocarbon contains a double bond?
24. LPG mainly consists of:
25. The black smoke produced by incomplete combustion contains:
26. Which hydrocarbon is gaseous at room temperature?
27. Unsaturated hydrocarbons decolorize:
28. The process of adding hydrogen to unsaturated hydrocarbons is:
29. Which fuel is considered cleaner?
30. The formula of propene is:
B)
C)
D)
31. Which hydrocarbon is used for fruit ripening?
32. Hydrocarbons are generally insoluble in:
33. The process of burning hydrocarbons in air is:
34. Which hydrocarbon belongs to alkane series?
35. Petroleum is also called:
36. Which fraction of petroleum is used as diesel fuel?
37. Which hydrocarbon is used in preparation of plastics?
38. Which type of hydrocarbons are more reactive?
39. Which hydrocarbon is used in gas welding?
40. Which fraction of petroleum is used for road surfacing?
41. Which gas is used as domestic fuel?
42. The formula of pentane is:
B)
C)
D)
43. Which process converts vegetable oil into ghee?
44. Hydrocarbons are mainly used as:
45. Which hydrocarbon is aromatic?
46. Which hydrocarbon produces soot on burning?
47. The boiling point of petroleum fractions increases with:
48. Which fraction of petroleum is used in dry cleaning?
49. Which fuel has the highest calorific value?
50. Which branch of chemistry studies hydrocarbons?