MCQ practice · SSC Chemistry Board questions · Chapter 11: Mineral Resources: Fossils
Which statement is correct?
Think it through first, then pick an option.
- a C₂H₆ is more reactive than C₂H₄
- b CH₄ reacts with bases
- c ethanol is a hydrocarbon
- d polypropylene can be recycled
Answer and explanation
Correct answer: d polypropylene can be recycled
According to the book, plastics such as polypropylene can be collected and recycled for reuse.
Why the other options are wrong
- a C₂H₆ is more reactive than C₂H₄: The reverse: with its weak second bond, C₂H₄ (an alkene) is more reactive than C₂H₆.
- b CH₄ reacts with bases: Alkanes generally do not react with acids or bases; methane is quite inert.
- c ethanol is a hydrocarbon: Ethanol contains oxygen, so it is not a hydrocarbon; it is an alcohol.
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