Arrange the following alkanes in decreasing order of their heats of combustion.
(i) `CH_(3)-overset(CH_(3))overset(|)underset(("Neo-pentane")(i))underset(CH_(3))underset(|)(C)-CH_(3)` (ii) `CH_(3)-underset((Iso-pentane)(ii))underset(CH_(3))underset(|)(CH)-CH_(2)-CH_(3)`
(iii) `CH_(3)-CH_(2)-underset(("n-pentane"))(CH_(2)-CH_(2)-CH_(3)`

Arrange the following alkanes in decreasing order of their heats of combustion. (i) underset(("Neo-pentane")(i))(CH_(3) - underset(CH_(3))underset(|)overset(CH_(3))overset(|)(C) - CH_(3)) (ii) underset("(Iso- pentane)" (ii))(CH_(3) - underset(CH_(3))underset(|)(CH) - CH_(2) - CH_(3)) (iii) underset(("n-pentane"))(CH_(3) - CH_(2) - CH_(2) - CH_(2) - CH_(3))

CH_(3)-underset(CH_(3))underset(|)(C)=CH-underset(CH_(3))underset(|)overset(CH_(3))overset(|)C-CH_(3)

CH_(3)-underset(CH_(3))underset(|)overset(CH_(3))overset(|)(C)-CH_(2)-underset(O)underset(||)(C)-NHCH_(3)

The IUPAC name of CH_(3)-overset(CH_(3))overset(|)underset(CH_(3))underset(|)(C)-underset(CH_(3))underset(|)(CH)-underset(I)underset(|)(CH)-CH_(2)-CH_(3) is:

Arrange the following alkenes in the decreasing order of stability: (I) underset(CH_(3)C=CHCH_(3))underset(|)(CH_(3)) (II) underset(CH_(3)CHCH=CH_(2))underset(|)(CH_(3)) (III) underset(CH_(2)=CHCH_(2)CH_(3))underset(|)(CH_(3))