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  4. Which of the following compounds can liberate methane when treated with excess of methyl magnesium iodide in dry ether. (a)(CH)3-(CH)2-(CH)2-OH (b)(CH)3-(CH)2-C≡ CH (c)(CH)3-(CH)2-COOH (d)(CH)3-(CH)2-CHO

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Q. Which of the following compounds can liberate methane when treated with excess of methyl magnesium iodide in dry ether.
$\left(a\right)\left(CH\right)_{3}-\left(CH\right)_{2}-\left(CH\right)_{2}-OH$
$\left(b\right)\left(CH\right)_{3}-\left(CH\right)_{2}-C\equiv CH$
$\left(c\right)\left(CH\right)_{3}-\left(CH\right)_{2}-COOH$
$\left(d\right)\left(CH\right)_{3}-\left(CH\right)_{2}-CHO$

NTA AbhyasNTA Abhyas 2020

Solution:

Active (Acidic) Hydrogen containing compound librate $CH_{4}$ with $CH_{3}-Mg-I$ .