Explanation

Explanation

• R-600a (Isobutane): Most common in modern, energy-efficient household refrigerators.
• R-134a (Tetrafluoroethane): Widely used in previous decades and still common in light refrigeration.
• R-290 (Propane): Used in some eco-friendly cooling units.
• Ammonia (NH3): Used mainly in industrial or large-scale commercial refrigeration

Last updated question by NA on 28 April 2026

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

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

The ECP and the President agreed on 8 February 2024 as the date for the general election.

Explanation

Explanation

• Edition: 22
• Held: 20 November 18 December 2022 (Qatar)
• Matches: 64
• Length: 28 days
• First Asian cities to host FIFA world cup: South Korea & Japan (2002)
• First Arab country to host FIFA world: Qatar (2022)
• FIFA world cup held in Asia in 2022: Second time
• Venues: 8 (5 cities)
• Country to provide security: Pakistan (sent around 4500 soldiers)
• Country to produce ball: Pakistan
• Participating countries from Asia: Qatar, Iran, South Korea, Japan & Saudi Arabia
• Winner: Argentine
• Argentine won: after 36 years (previously won in 1986)
• Runner-up: France
• Argentine won: third time
• Goals scored: 172
• Top scorer: Kylian Mbappe (8 goals)
• Kylian Mbappe belongs: France
• Best player: Lionel Messi (7 goals) (Argentine)
• Golden Ball winner: Lionel Messi
• Lionel Messi won Ball: Second time
• Lionel Messi won Golden Ball first time: 2014
• Best young player: Enzo Fernendez (Argentine)
• Best goalkeeper: Emiliano Martinez (Argentine)
• Country to get third position: Croatia
• Country to get fourth position: Morocco
• Golden Boot winner: Kylian Mbappe (8 goals)
• Second player to score hat-trick in Final: Kylian Mbappe
• First Arab country to Qualify for semi-final: Morocco
• Final held: Lusail Stadium 
• World Cup trophy showcased by: Deepika Pedukone (Indian actress) & Iker Casillas (Spanish legend footballer)
• Golden Glove winner: Emiliano Martinez (Argentine)
• In 2022, Argentine became the first South American nation to win FIFA World Cup since Brazil in 2002.
• France lost in the final of a World Cup for the second time (First vs Italy in 2006) (second vs Argentine in 2022)