Explanation

• Canberra is the capital city of Australia.

Additional information:
Currency is the Australian Dollar.

The official language is English.

The national game is Cricket.

Located in the continent of Oceania.

Primary Religion is Christianity (but a secular country).

Parliament is called the Federal Parliament.

Australia flag has three colours.

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

Must read

Capital of World Countries

Currency of World Countries

Last verified on 12-06-2026

Explanation

• Pakistan, officially the Islamic Republic of Pakistan, is a country in South Asia.
• It is the world's fifth-most populous country.
• It is the world's second-largest Muslim population.
• It is the 33rd-largest country by area.
• The capital of Pakistan is Islamabad.
• The Currency of Pakistan is the Pakistani rupee.

Last verified on 02-04-2026

Explanation

• The SI unit of electric current is Ampere (A).
• Electric current measures the flow of electric charge.
• Defined using the elementary charge (e = 1.602176634 × 10⁻¹⁹ C).
• Named after: André-Marie Ampère (scientist).
• 1 Ampere = 1 Coulomb per second (1 A = 1 C/s).

Last verified on 08-06-2026

Explanation

• The Eiffel Tower is located in Paris, France. 
• Official name: Tour Eiffel
• Founded: January 28, 1887
• Height: 1063 feet
• Construction started: January 28, 1887
• Completed and Opened: March 31, 1889

Last verified on 16-07-2026

Explanation

• 1 Nanometer (nm) = 10⁻⁹ m

Additional information:

• 1 Kilometer (km) = 10³ m
• 1 Meter (m) = 10⁰ m
• 1 Millimeter (mm) = 10⁻³ m
• 1 Micrometer (µm) = 10⁻⁶ m

Last verified on 06-07-2026

Explanation

• Sound cannot travel through a vacuum because there are no particles to carry sound vibrations.
• Sound needs a medium such as a solid, liquid, or gas to travel.
• Since space is nearly a vacuum, sound cannot be heard there.
• The speed of sound in a vacuum is 0 m/s.

Additional information:

• Infrasound: Below 20 Hz
• Audible sound: 20 Hz – 20,000 Hz (20 kHz)
• Ultrasound: Above 20 kHz
• Speed of sound in air: 343 m/s
• Speed of sound in water: 1,481 m/s

Last verified on 07-06-2026

Explanation

• Author: Benazir Bhutto
• Book Type: Autobiography
• Published: 7th January 1989
• Publisher: Simon & Schuster
• Theme: Politics, struggle, democracy

Additional information:

• Benazir Bhutto was the first female Prime Minister of Pakistan.
• She served two non-consecutive terms: 1988–1990 and 1993–1996.

Last verified on 20-06-2026

Explanation

When white light passes through a prism, it splits into 7 colors, forming a spectrum known as a rainbow:

1. Red
2. Orange
3. Yellow
4. Green
5. Blue
6. Indigo
7. Violet

The separation of visible light into its different colours is known as dispersion.

Last verified on 08-06-2026

Explanation

• Battery is a device that converts chemical energy into electrical energy.
• Batteries work by using a galvanic cell.
• It is an electrochemical device made up of two electrodes and an electrolyte solution.

Last verified on 16-03-2026

Explanation

• The Saudi riyal is the currency of Saudi Arabia.
• Symbol: code: SAR
• It is subdivided into 100 halalas (Arabic: هللة Halalah).
• On February 20, 2025, the Saudi Central Bank announced the approval of the Saudi riyal symbol by King Salman

Additional information

• The capital of is Riyadh.
• The official language is Arabic.
• It is located in the continent of Asia.
• Primary Religion is Islam.
• Parliament, called Majlis Al Shura.

Last updated by NA on 27 April 2026