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Which one of the following is the correct sequence in increasing order of molecular weights of the hydrocarbons ?

[A] Butane, propane, ethane and methane
[B] Butane, ethane, propane and methane
[C] Propane, butane, ethane and methane
[D] Methane, ethane, propane and butane
Answer & Explanation
Option: [D]

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