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JEE Advanced levelOne or more correct optionsDifficulty 3 of 3g1273

Hydrogens on sp3 carbons directly attached to a C=C carbon take part in hyperconjugation. A reference alkene is shown. Select all of the alkenes shown that have MORE than 6 such hydrogens.

  1. AStructure A
  2. BStructure B
  3. CStructure C
  4. DStructure D

Answer: A, C

Counts of hydrogens on sp3 carbons attached to the sp2 carbons: tetramethylethylene has 12, but-2-ene has 6, 2-methylbut-2-ene has 9 and propene has 3. Those greater than 6 are tetramethylethylene and 2-methylbut-2-ene.
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