Explanation

• Carbon dioxide (CO₂) is used in fire extinguishers.
• It extinguishes fire by displacing oxygen and cooling the burning material.
• CO₂ fire extinguishers are especially effective for electrical and flammable liquid fires.
• Carbon dioxide is a colorless and non-flammable gas.
• It leaves no residue after use.

Last verified on 09-07-2026

Explanation

• Alexander Graham Bell is credited as the inventor of the telephone.
• He was awarded the first successful patent for it.
• The telephone was invented in 1876.
• Bell made the first-ever telephone call to his assistant Thomas Watson.

Last verified on 31-03-2026

Explanation

• The symbol "√" represents the square root.
• It is called a radical.
• It is used in mathematics to indicate the root of a number.

Last verified on 09-07-2026

Explanation

When pressure is in atm and volume is in liters, use R = 0.0821 L·atm·mol⁻¹·K⁻¹.

The value of R depends on the units, not on the temperature (300 K).

Last verified on 09-07-2026

Explanation

When pressure = kPa and volume = L, use R = 8.314 L·kPa·mol⁻¹·K⁻¹.

This value is used in the Ideal Gas Law: PV = nRT.

Last verified on 09-07-2026

Explanation

Explanation

• Canada Capital is Ottawa.
• Canada Currency is Canadian Dollar.
• Canada official language is English; French.
• Canada located is in Continent North America.
• Canada Primary Religion is Christianity (But Secular Country).
• Canada Parliament called Parliament.

Tricks for Remember

DOLLAR

 Li-Ne-US-Ca-Fi-T-E-A

Mind trick: Li ne(a name) who lives in US likes Coffee(Ca- Fi) and Tea(T-E-A)

**Li-Ne**

Li-Liberia

Ne-New Zealand

**US**

United States

**Ca-Fi**

Ca-Canadian

Fi- Fizzi

**T-E-A**

T-Taiwan

E-Ethiopia

A-Australia

Last verified on 09-07-2026

Explanation

• The headquarters of the International Court of Justice is in The Hague, Netherlands.
• ICJ is one of the six principal organs of the United Nations.
• It consists of 15 judges, elected for 9-year terms.

• Founded: 1945
• Official Languages: English, French
• Member States: UN member countries
• Main Function: Settling legal disputes between states

Explanation

• Built by: Aurangzeb
• Construction completed: 1673
• Location: Lahore, Punjab, Pakistan
• Architect: Nawab Zain Yar Jang Bahadur
• Rank in Pakistan: 3rd largest mosque

Last verified on 09-07-2026

Explanation

• Nanga Parbat is famously called the "Killer Mountain."
• Its height 8,126 metres (26,660 feet).
• It is located in Gilgit-Baltistan.
• It is part of the Western Himalayas.
• It is locally known as Diamer.
• It is the 9th-highest mountain in the world.
• It is famously called the "Killer Mountain."
• First Ascent: 3 July 1953
• Shehroze Kashif became the youngest Pakistani to successfully summit Nanga Parbat.

Last verified by on 16-05-2026