The order of decreasing reactivities of alkanes, alkenes and alkynes is:
Correct answer: C. Alkenes > Alkynes > Alkanes
- A. Alkanes > Alkenes > Alkynes
- B. Alkynes > Alkenes > Alkanes
- C. Alkenes > Alkynes > Alkanes
- D. Alkenes = Alkynes > Alkanes
Explanation
The order of decreasing reactivities for alkanes, alkenes, and alkynes is as follows: alkynes > alkenes > alkanes. This means that alkynes are the most reactive, followed by alkenes, and then alkanes. Alkynes have a triple bond, which makes them more prone to undergo chemical reactions compared to alkenes (double bond) and alkanes (single bond).
This question appeared on the KMU Centralized Admission Test 2020 paper, which you can sit online with every answer explained.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? [email protected]
About Alkenes
Alkenes are unsaturated hydrocarbons containing a carbon-carbon double bond with sigma and pi components and restricted rotation. Their reactions include electrophilic addition of hydrogen, halogens, hydrogen halides and water, with Markovnikov orientation, oxidation, combustion and polymerisation, while their preparation commonly involves elimination from alkyl halides or alcohols.
Practise Chemistry of Hydrocarbons
1,093 free Chemistry of Hydrocarbons MCQs from Chemistry, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Discussion
Stuck on an option, or know a faster way to get there? Ask or explain it here.
No comments yet. Be the first to explain this one.
Exams that ask Chemistry questions like this
Chemistry is on 14 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.
More Alkenes questions
An olefin "X" on ozonolysis gives CH3CH2COCH3 and CH3COCH3. The IUPAC name of X is:
A gas decolorized alkaline KMnO4 solution but does not give any PPT with ammoniacal AgNO3
Propene reacts with hypochlorous acid to form
The addition of hypo-chicrous acid to 1 butene gives:
3-Ethyl-2-Pentene on ozonolysts gives:
Which is the most stable hydrocartion?