General Knowledge and Reasoning

(c) 26, 24

The differences are $-2,-2,-3$ repeating: $42,40,38,35,33,31,28$. The next two differences are $-2,-2$, giving $26$ and $24$.

(d) Management

In a private limited company, the management is in the hands of its directors.

(c) Fire

The Sun gives light, and fire gives heat in the same way (source and its characteristic product).

(a) Pratap Malla

Rani Pokhari in Kathmandu was built by King Pratap Malla in memory of his son Chakravartendra.

(c) Old, Adult, Adolescent, Child, Infant

This is the only option in a consistent order (descending age, from old to infant). The other options mix the stages of life.

(b) IBM1401

Nepal's first computer was an IBM 1401, brought in 1971 (2028 BS) for the census.

(d) Key : piano

A bristle is a part of a brush, and a key is a part of a piano (part-to-whole relation).

(c) Flooding

Floods are generally cited as the natural disaster that causes the most deaths worldwide, because they affect large populations repeatedly.

(d) All of these

International treaties exist on fisheries, whaling (International Convention for the Regulation of Whaling) and ocean pollution (e.g. MARPOL).

(b) $36.9^\circ C$

Normal body temperature is about $36.9^\circ C$, which equals $98.4^\circ F$ (roughly $98.6^\circ F$).

(c) Spleen

Malaria parasites infect red blood cells and the liver, and cause enlargement of the spleen.

(c) Vit A

Vitamin A is essential for healthy vision; its deficiency causes night blindness.

(a) Tribhuwan Highway

The Tribhuvan Rajpath (Tribhuwan Highway), linking Kathmandu with Raxaul in India, was Nepal's first highway, opened in 1956.