OCTCO/OCTF Exit Exam • Set 5 Question 25 of 30
The most stable naphthenic hydrocarbons are the naphthene rings with?
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Direct Answer
Option C: five and six carbon atoms
The most chemically stable naphthenic hydrocarbons are 5-membered (cyclopentane) and 6-membered (cyclohexane) saturated carbon rings due to low ring strain.
All Options
A
Seven and Eight carbon atoms
B
Two and four carbon atoms
C
five and six carbon atoms
(Correct Answer)
D
Four and seven car bon atoms
Detailed Explanation & Context
The most chemically stable naphthenic hydrocarbons are 5-membered (cyclopentane) and 6-membered (cyclohexane) saturated carbon rings due to low ring strain.
Relevant Framework: STCW 2010 Manila Amendments • DG Shipping E-Learning & Exit Exam Standards • Oil and Chemical Tanker Cargo Operations (OCTCO/OCTF).
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