The number of hyperconjugation structures involved to stabilize the carbocation formed in the above reaction is $.............$.

Arrange the following carbocations in the increasing order of stability with respect to their labels:

Label	Carbocation
$1$	$CH_3-CH^+-CH_3$
$2$	$CH_3^+$
$3$	$(CH_3)_3C^+$
$4$	$CH_3-CH_2^+$

The correct stability order for the following carbocations is:

The stability of the carbocations follows the order:

State True or False for the following statements:
$(i)$ Only carbocation is formed by homolytic cleavage of a bond.
$(ii)$ By heterolytic cleavage of a bond,a carbocation or carbanion is formed.
$(iii)$ The carbon of a carbanion is $sp^2$ and the carbon of a carbocation is $sp^3$.
$(iv)$ The carbon of a carbanion is $sp^3$ and the carbon of a carbocation is $sp^2$.

The correct stability order for the following species is: