Explanation

• The River Thames flows through southern England.
• It passes through the city of London.
• It is also sometimes called the River Isis in its upper course.
• It is the second-longest river in the United Kingdom.

Additional information:

Major Rivers in the UK:

• River Severn – longest (~354 km)
• River Thames – ~346 km
• River Trent
• River Mersey
• River Clyde

Last verified on 03-05-2026

Explanation

• Ottawa is the capital city of Canada.
• Chosen as the capital in 1857 by Queen Victoria

Additional information 

The currency of Canada is the Canadian Dollar.

Official languages: English and French.

Located in the continent of North America.

Primary Religion is Christianity (but a secular country).

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

Question updated 03-March-2026

Explanation

• A massive explosion occurred on 4 August 2020 in Beirut.
• Beirut is the capital of Lebanon.
• Caused by improper storage of ammonium nitrate at the port.
• Resulted in 200+ deaths and thousands injured.
• One of the largest non-nuclear explosions in history.

Last verified on 02-05-2026

Explanation

• Ozone (O₃) is both beneficial and harmful depending on its location.
• In the Ozone Layer, it protects life by blocking UV rays.
• At ground level, it becomes a pollutant harmful to lungs and plants.
• Thus, it has a dual role in Earth’s atmosphere.

Last verified on 02-05-2026

Explanation

• The ozone hole is mainly caused by chlorofluorocarbons (CFCs).
• CFCs release chlorine atoms that destroy ozone molecules.
• This happens in the Ozone Layer.
• Major impact observed over Antarctica.
• Linked to human activities like refrigeration and aerosols.

Last verified on 02-05-2026

Explanation

• Equatorial regions lie near the Equator.
• Climate is consistently hot and very humid throughout the year.
• Temperature remains around 25–30°C with little variation.
• These areas receive heavy rainfall almost daily.
• Typical of regions like Amazon Rainforest and Congo Basin.

Last verified on 02-05-2026

Explanation

• Silicate minerals are the most abundant in the Earth’s crust.
• They are made of silicon and oxygen.
• About 90% of Earth’s crust consists of silicates.
• Common examples include quartz and feldspar.

Last verified on 02-05-2026

Explanation

• The Nordic race is associated with Northern Europe.
• It includes people from countries like Norway, Sweden, and Denmark.
• Typical features include tall height, fair skin, and light hair.
• This classification was used in older anthropological studies.
• Modern science focuses more on genetics than racial divisions.

Last verified on 02-05-2026

Explanation

• Cardinal points are the four main directions used in navigation.
• These are North, South, East, and West.
• They are shown on a Compass.
• Used for maps, travel, and geographic location.
• Form the basic system of direction finding.

Last verified on 02-05-2026

Explanation

• Coastal lagoons are shallow water bodies separated from the sea.
• Over time, they get filled with sediments and organic matter.
• This process converts them into marshy (wetland) areas.
• So, most lagoons gradually become marshes.
• This is a natural process in Geomorphology.

Last verified on 02-05-2026