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Give the major alkene resulting from the...

Give the major alkene resulting from the thermal decomposition of hydroxide salt of the following:
`[Phoverset(o+)(N)Me_(3)]overset(Theta)(OH)`
b. .
c.

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a. ` (##KSV_CHM_ORG_P2_C15_S01_023_S01.png" width="80%">
`[{:("Compound does not have" beta-H"atom so"),(base (overset(Theta)OH) "displaces one Me group to"),(give MeOH and PhNMe_(2)):}]` b. The are three different types of ` Bate -H` atoms . The major product is obtained by the removal of ` H_a` which gives least -substituted alkene (I)

c. ` (##KSV_CHM_ORG_P2_C15_S01_023_S03.png" width="80%">.
Both the products (I) and (II) are possible .
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