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JEE CHEMISTRY MCQ: ORGANIC CHEMISTRY-SOME BASIC PRINCIPLES AND TECHNIQUES

1 Medium

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Analyzing +4 | -1

What is the correct order of decreasing stability of the following cations

I)

C{H_3} - \mathop C\limits^ \oplus H - C{H_3}

II)

C{H_3} - \mathop C\limits^ \oplus H - OC{H_3}

III)

C{H_3} - \mathop C\limits^ \oplus H - OC{H_3}

View answer and explanation

Correct option: A

II > I > III

The correct answer is B (II > III > I) because the carbocation is stabilized by the +R effect of the methoxy group in II and III, with II being more stable due to less steric hindrance.

More Questions from ORGANIC CHEMISTRY-SOME BASIC PRINCIPLES AND TECHNIQUES

Practice All Chapter MCQs →

Keto-enol tautomerism is not observe in How many isomers of

{C_5}{H_{11}}OH

will be primary alcohols? Which statement is true? Common reactions of benzene and its derivatives are: How many structural formulae are possible for

{\mathrm{C}_5}{\mathrm{H}_{11}}\mathrm{Cl}?

Assertion (A): The compounds that have the same constitution and sequence of covalent bonds but differ in relative positions of their atoms or groups in space are called stereoisomers.

Reason (R): Stereoisomerism is a special type of isomerism which can be classified as geometrical and optical isomerism