latests
Which gas is a major contributor to acid rain?
A) Oxygen
B) Sulfur dioxide
C) Nitrogen
D) Helium
Sulfur dioxide emitted from fossil fuel combustion oxidizes to sulfuric acid in the atmosphere, contributing to acid rain.
latests
A)
1919
B)
1939
C)
1945
D)
1950
The UN was established in 1945 after World War II to maintain international peace, replacing the failed League of Nations.
latests
A)
South America
B)
Central America
C)
North America
D)
Caribbean
The Maya thrived in Central America, particularly Mexico, Guatemala, and Honduras, known for their calendar, writing, and cities.
latests
A)
Karl Marx
B)
Friedrich Engels
C)
Vladimir Lenin
D)
Max Weber
Karl Marx wrote *Das Kapital* (1867), a critique of capitalism, laying foundations for Marxist economic and political theory.
latests
A)
Churchill
B)
Stalin
C)
Roosevelt
D)
Truman
Winston Churchill used the term “Iron Curtain” in 1946 to describe the division of Eastern and Western Europe.
latests
A)
Magic Particle
B)
God Particle
C)
Quantum Particle
D)
Ghost Particle
The Higgs Boson, discovered in 2012, is nicknamed the “God Particle” because it explains how particles acquire mass in physics.
latests
A)
Oxygen
B)
Nitrogen
C)
Carbon Dioxide
D)
Argon
Nitrogen makes up about 78% of Earth’s atmosphere, followed by oxygen, playing a crucial role in life and atmospheric stability.
latests
A)
Copernicus
B)
Kepler
C)
Galileo
D)
Newton
Johannes Kepler established his laws (1609–19) describing elliptical orbits and planetary motion around the Sun.
latests
A)
Roman
B)
Persian
C)
Incan
D)
Ottoman
The Achaemenid Persians built the Royal Road to link their vast empire, facilitating trade, communication, and military movement.
latests
A)
Ferdinand Magellan
B)
Francis Drake
C)
Vasco da Gama
D)
James Cook
Ferdinand Magellan led the first expedition to circumnavigate the globe (1519–1522); although he died en route, the voyage completed the circuit.
latests
A)
Han Wudi
B)
Qin Shi Huang
C)
Liu Bang
D)
Sun Yat-sen
Qin Shi Huang (221 BCE) unified China, standardized writing, and began construction of the Great Wall.
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