Which of the following is the family of sunflower?

The major product of the following reaction is:

$A$ finite ladder is constructed by connecting several sections of $2\,\mu F$ and $4\,\mu F$ capacitor combinations as shown in the figure. It is terminated by a capacitor of capacitance $C$. What value should be chosen for $C$ such that the equivalent capacitance of the ladder between the points $A$ and $B$ becomes independent of the number of sections in between? (Answer in $\mu F$)

$2, 3$-dimethylhexane contains tertiary,secondary,and primary carbon atoms,respectively:

The combined equation of the diagonals of the square formed by the two pairs of straight lines given by $xy+4x-3y-12=0$ and $xy-3x+4y-12=0$ is

Diborane reacts with $HCl$ in the presence of $AlCl_3$ and liberates