ব্যাংক নিয়োগ প্রস্তুতি ⎯ লং কোর্স

Adventitious is associated with something by chance rather than as an integral part; extrinsic.
Botany, Zoology. appearing in an abnormal or unusual position or place, as a root.

Aberrant means departing from the right, normal, or usual course.
deviating from the ordinary, usual, or normal type; exceptional; abnormal.

Capricious means subject to, led by, or indicative of a sudden, odd notion or unpredictable change; erratic:
He's such a capricious boss I never know how he'll react.
Obsolete. fanciful or witty.

replace ''who'' by ''that''...
for example: He is the same man that supported me.