Q. Which of the following can form methane gas with methyl magnesium bromide?

 

Answer is 2 because it is a five membered ring which is more unstable and hence reacts easily
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But how can we come to know the stability
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Option 2
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As cyclopentadiene is unstable due to Bayer strain thus it reacts to give methane
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  • Option 2 can from the Methane Gas when treated with Grignard reagent that is (r)​​​​​_(mgx) +
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