Explanation

The book is at rest with no net force or motion, so it is in static equilibrium.

Since any small push won’t topple it, it is also considered stable equilibrium on a flat surface.

Explanation

Urea is the most widely used nitrogenous fertilizer in Pakistan due to its high nitrogen content (46%).

It is cheap, effective, and easily available compared to other nitrogen fertilizers.

Explanation

Neon is a noble gas that exists as single atoms (mono-atomic) in nature.

Oxygen (O₂), Nitrogen (N₂), and Fluorine (F₂) are diatomic molecules.

Explanation

DAP (Diammonium Phosphate) is a synthetic chemical fertilizer rich in nitrogen and phosphorus.

Manures and compost are natural fertilizers, not synthetic.

Explanation

Bone is the hardest and most rigid connective tissue in the body.

It provides structural support and protection to organs.

Explanation

UNICEF stands for: United National international children's emergency fund

UNICEF: a United Nations agency

UNICEF: responsible for providing humanitarian and developmental aid to children worldwide.

    UNICEF works in more than 192 countries and territories

    UNICEF Formed: 11 December 1946

Explanation

Finger : Ring :: Neck : Necklace.

A ring is an ornament worn on a finger.

A necklace is an ornament worn on a neck.

Explanation

Explanation

The subject is Saima (female), so the pronoun should be her, not his.

Correct sentence: Neither Saima nor her friends were able to attend the theory class this morning.

Explanation

The term fluids refers to both liquids and gases, as they can flow.

Liquids specifically are also classified under fluids because of their ability to take the shape of a container.