Current Affairs and Contemporary Issues

(c) Acoustics

Acoustics is the branch of physics that deals with the study of sound, its production, propagation and effects.

(d) Banks

A river is defined by its channel, which necessarily has two banks (sides). Fishes, boats and deltas are not always present — a polluted or seasonal stream may have no fish or boats, and only rivers reaching the sea form a delta.

(b) Elephant polo

The World Elephant Polo Championship is held in Nepal (at Meghauli, Chitwan) and is the only international sports competition staged exclusively in Nepal. Dandi Biyo and Bhale Jadhai are traditional Nepali games but not international events, while Kabaddi is played in many countries.

(a) Manaslu

Manaslu (8,163 m) is popularly known as the "Killer Mountain" in Nepal because of its very high fatality rate among climbers, caused by frequent avalanches and difficult weather on its slopes.

(d) Learning

Knowledge is acquired through learning — it is the process by which information, skills and understanding are gained. A school, a teacher or a textbook may help, but none of them is necessary: a person can gain knowledge without any of them, whereas knowledge cannot exist without learning.