Number of $\sigma$ and $\pi$ bonds present in $CH_3-CH=CH-C\equiv CH$ are

Explain the types of overlapping of atomic orbitals with diagrams.

The number of sigma $(\sigma)$ and pi $(\pi)$ bonds present in benzene respectively are:

Assuming the bond direction is along the $z$-axis,which of the following overlaps of atomic orbitals of two atoms $(A)$ and $(B)$ will result in bonding?
$I$. $s$-orbital of $A$ and $p_x$-orbital of $B$
$II$. $s$-orbital of $A$ and $p_z$-orbital of $B$
$III$. $p_y$-orbital of $A$ and $p_z$-orbital of $B$
$IV$. $s$-orbital of both $(A)$ and $(B)$

Which of the following bonds is formed by the lateral overlap of $p-p$ orbitals?

Which of the following statements is $NOT$ correct?