latests
Which scientist formulated the Periodic Table of Elements?
A) Avogadro
B) Mendeleev
C) Dalton
D) Rutherford
Dmitri Mendeleev created the Periodic Table in 1869, arranging elements by properties and predicting undiscovered ones accurately.
latests
A)
Aryabhata
B)
Brahmagupta
C)
Bhaskara
D)
Ramanujan
Brahmagupta (7th century) formalized the rules for zero and negative numbers, laying the foundation of modern mathematics.
latests
A)
Sumerian Cuneiform
B)
Mayan Glyphs
C)
Egyptian Hieroglyphs
D)
Linear B
The Rosetta Stone contained inscriptions in three scripts, allowing scholars to unlock Egyptian hieroglyphs for the first time.
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)
Treaty of Utrecht
B)
Treaty of Westphalia
C)
Treaty of Versailles
D)
Treaty of Tordesillas
The Peace of Westphalia (1648) concluded the Thirty Years' War and established principles of sovereign states and non-intervention.
latests
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)
Free Movement
B)
Military Alliance
C)
Trade Union
D)
Tax Harmonization
The Schengen Agreement allows passport-free travel across many European countries, facilitating movement and integration in the EU.
latests
A)
1895
B)
1903
C)
1914
D)
1920
Orville and Wilbur Wright achieved the first powered flight on December 17, 1903, at Kitty Hawk, North Carolina.
latests
A)
Silver
B)
Copper
C)
Gold
D)
Aluminum
Silver has the highest electrical conductivity of all elements, making it ideal for electronics, though copper is more widely used.
latests
A)
Copper
B)
Iron
C)
Bronze
D)
Gold
Copper was the first metal widely used by humans in the Chalcolithic period, preceding the Bronze Age when alloys were developed.
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.
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