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

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Which among the following has maximum stability
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Correct option: A
CH2=CHC∙H2C{H_2} = \mathrm{ }CH\mathrm{ }\mathop C\limits^ \bullet {H_2}
Option A (CH2=CHC∙H2C{H_2} = \mathrm{ }CH\mathrm{ }\mathop C\limits^ \bullet {H_2}) is correct because allylic free radicals are more stable than primary, secondary, or tertiary free radicals due to resonance stabilization.

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Keto-enol tautomerism is not observe in How many isomers of C5H11OH{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 C5H11Cl?{\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
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