JEE Main 202623 JanuaryEvening Shift
- Exam
- JEE Main
- Year
- 2026
- Date
- 23 January
- Shift
- Evening Shift
- Subject
- Chemistry
- Chapter
- General Organic Chemistry
JEE Main 2026 · 23 January · Evening Shift · Chemistry · General Organic Chemistry
Given below are two statements: Statement I : (CH_ 3 )_ 3 C is more...
Given below are two statements:
Statement I: is more stable than as nine hyperconjugation interactions are possible in \left(\mathrm{CH}_{3}\right)_{3} \stackrel{\oplus}{\mathrm{C}}\stackrel{\oplus}{\mathrm{C}} \mathrm{H}_{3} as only three hyperconjugation interactions are possible in .
In the light of the above statements, choose the correct answer from the options given below
Statement I: is more stable than as nine hyperconjugation interactions are possible in \left(\mathrm{CH}_{3}\right)_{3} \stackrel{\oplus}{\mathrm{C}}\stackrel{\oplus}{\mathrm{C}} \mathrm{H}_{3} as only three hyperconjugation interactions are possible in .
In the light of the above statements, choose the correct answer from the options given below
Options
- AStatement I is false but Statement II is true
- BStatement I is true but Statement II is false
- CBoth Statement I and Statement II are true
- DBoth Statement I and Statement II are false
Correct answer
B. Statement I is true but Statement II is false
Step-by-step solution
Statement I: In the tert-butyl carbocation , there are three methyl groups attached to the carbocationic carbon. Each methyl group has 3 -hydrogens, making a total of 9 -hydrogens. Thus, 9 hyperconjugation interactions are possible, which significantly stabilize the carbocation. Statement I is true.
Statement II: In the methyl carbocation , there are no -carbons and consequently no -hydrogens. Hyperconjugation requires the presence of at least one -hydrogen on a carbon adjacent to the hybridized carbocation center. Therefore, zero hyperconjugation interactions are possible in . Statement II is false because it claims three hyperconjugation interactions are possible.
Conclusion: Statement I is true but Statement II is false.
Statement II: In the methyl carbocation , there are no -carbons and consequently no -hydrogens. Hyperconjugation requires the presence of at least one -hydrogen on a carbon adjacent to the hybridized carbocation center. Therefore, zero hyperconjugation interactions are possible in . Statement II is false because it claims three hyperconjugation interactions are possible.
Conclusion: Statement I is true but Statement II is false.