Explanation

Tirich Mir is the highest mountain in the Hindu Kush range.

It is the 33rd-highest peak in the world.

It is the highest mountain in the world.

Tirich Mir is located in the Chitral District of Khyber Pakhtunkhwa.

Tirich Mir height: 7708 meters 

It is the first recorded climber on 21 July 1950 by a Norwegian.

The list of Pakistan's highest peaks:

Highest peak of the Hindukush range: Tirich Mir

Highest peak of the Himalaya range: Nanga Parbat

Highest peak of the Karakoram range: K-2

Highest peak of the Kirthar range: Zardak Peak

Highest peak of the Koh-e-Suleman range: Takht-e-Sulaiman

Highest peak of the Salt range: Sakesar

Explanation

Tetrafluoroethane (HFC-134a) is commonly used in modern refrigerators.

Unlike Freon, it does not deplete the ozone layer.

Explanation

In January, Pakistan retaliated against Iran following a border clash.

This incident was part of ongoing tensions along the Pakistan-Iran border.

Explanation

Explanation

"May I come in?".

This is used when requesting permission to enter a place.

Explanation

Optics is the branch of physics that studies light and its interactions with matter.

It including phenomena such as reflection, refraction, and dispersion.

Explanation

Sudan split into two countries in 2011, with South Sudan becoming an independent nation.

This separation followed decades of conflict and a referendum in which South Sudan voted for independence.