Which of the following is an odd nerve?

Read the following statements.
$I.$ Preganglionic nerve fibres of $III, VII, IX$ and $X$ cranial nerves are a part of the parasympathetic nervous system.
$II.$ $V, VII, IX$ and $X$ cranial nerves are mixed nerves.
$III.$ Trochlear nerves are the largest cranial nerves.
$IV.$ Abducens nerves are motor nerves and originate from the Gasserian ganglia.
Which of the above statements are correct?

Select the mixed type of cranial nerves from the following list:
$i$. Pathetic (Trochlear)
$ii$. Trigeminal
$iii$. Facial
$iv$. Auditory (Vestibulocochlear)
$v$. Glossopharyngeal

In humans,if the abducens nerve is damaged,which of the following functions will be affected?

Distinguish between (Any four):
$(a)$ Afferent neurons and Efferent neurons
$(b)$ Impulse conduction in a myelinated nerve fibre and an unmyelinated nerve fibre
$(c)$ Aqueous humour and vitreous humour
$(d)$ Blind spot and Yellow spot
$(e)$ Cranial nerves and Spinal nerves

Which of the following cranial nerves are classified as mixed nerves?