Essential Concepts & Key Facts
High-yield conceptual summaries for competitive exams and rapid revision.
- Alexander III of Macedon crossed the Hindu Kush and invaded the northwestern Indian subcontinent in the spring of 326 BCE.
- King Ambhi of Taxila offered surrender and logistical assistance to Alexander, seeking an alliance against his rival King Porus.
- The Battle of the Hydaspes was fought on the banks of the Jhelum River in 326 BCE between Alexander and King Porus of the Paurava Kingdom.
- Alexander utilized night-time river crossings upstream and cavalry envelopment to counteract the defensive formation of Porus's 200 war elephants.
- Following Porus's surrender, Alexander restored Porus to his throne and granted him administrative dominion over newly subjugated neighbouring lands.
- Alexander founded the twin cities of Nicaea to celebrate his victory and Bucephala to memorialize his warhorse Bucephalus who died after the battle.
- The Macedonian advance ceased at the Hyphasis River (modern Beas) when soldiers mutinied, refusing to march against the formidable Nanda Empire.
- General Coenus acted as the principal spokesman for the mutinous Macedonian troops, persuading Alexander to begin a planned withdrawal southward.
- Before retreating, Alexander erected twelve monumental stone altars dedicated to Olympian deities on the banks of the Beas River to mark his limits.
- Alexander suffered a severe lung puncture wound during the assault on the citadel of the Malli (Malavas) along the lower Indus River valley.
- Alexander commanded Admiral Nearchus to lead a naval exploration fleet from the Indus delta through the Persian Gulf to the Euphrates River.
- Alexander divided his northwest Indian territories into satrapies governed by Macedonian officers like Peithon and Indian allies like Ambhi and Porus.
- Alexander died in Babylon in June 323 BCE at age 32, triggering the Partition of Babylon and the Wars of the Diadochi among his successor generals.
- The power vacuum left by Alexander's departure and death facilitated Chandragupta Maurya's overthrow of the Nandas and annexation of northwestern satrapies.
- The invasion opened direct overland and maritime communication routes between India and the Mediterranean, stimulating Greco-Buddhist Gandhara art.
Showing 10 Curated Questions112 Total in Bank
1ID: GK-CITY-00361
hardGlobal Sobriquets & Epithets: Big Apple, Eternal City, City of Canals
Which North American capital city was described by Prussian geographer Alexander von Humboldt in the early 19th century as the 'City of Palaces' (La Ciudad de los Palacios)?
Verified Explanation
Alexander von Humboldt was impressed by the grand neoclassical and Baroque mansions of colonial nobility in Mexico City, famously dubbing it 'The City of Palaces' in his geographic essays.2ID: GK-WHIST-00608
easyGreek Roman Empires
Alexander the Great was the king of which ancient Greek kingdom before conquering the Persian Achaemenid Empire?
Verified Explanation
Alexander III of Macedon (Alexander the Great) ascended the Macedonian throne in 336 BCE following the assassination of his father, Philip II.3ID: GK-HIST-00716
mediumBritish Colonial Rule & Policies
In the Ryotwari land revenue system formulated by Thomas Munro and Alexander Read in southern India, with whom was the land revenue contract directly settled?
Verified Explanation
In the Ryotwari system implemented in the Madras and Bombay Presidencies, the British government recognized the individual peasant (ryot) as the registered proprietor of the soil, contracting directly with him for annual revenue payments based on soil survey classification.4ID: GK-EPIG-00206
hardAshokan Inscriptions & Script Decipherment
In Major Rock Edict XIII, Ashoka claims Dhamma victories across five Hellenistic kings: Antiochus II, Ptolemy II, Antigonus Gonatas, Alexander of Epirus, and 'Maka'. Who is 'Maka' identified as by modern historians?
Verified Explanation
In Major Rock Edict XIII, 'Maka' refers to King Magas of Cyrene (in modern Libya, North Africa). The other four Hellenistic kings are Amtiyoko (Antiochus II of Syria), Turamaya (Ptolemy II Philadelphus of Egypt), Amtekina (Antigonus Gonatas of Macedonia), and Alikasudaro (Alexander of Epirus).5ID: GK-AWRD-00149
hardCinema Oscars National
Which Swedish cinematic master directed the art-house classics The Seventh Seal (1957), Wild Strawberries (1957), and Fanny and Alexander (1982), awarded the Irving G. Thalberg Memorial Award by the Academy in 1970?
Verified Explanation
Ingmar Bergman explored existential alienation, mortality, and faith, winning three Best Foreign Language Film Oscars (The Virgin Spring, Through a Glass Darkly, Fanny and Alexander).6ID: GK-BODY-01028
hardLandmark Medical Discoveries & Diagnostics
Who was awarded the 1945 Nobel Prize in Physiology or Medicine alongside Alexander Fleming for isolating, biochemically purifying, and scaling the mass production of penicillin?
Verified Explanation
Alexander Fleming discovered the antibacterial action of Penicillium notatum mould in 1928, but penicillin remained an unstable, crude laboratory filtrate for over a decade. At Oxford University in 1939-1941, Australian pathologist Howard Florey and German-born biochemist Ernst Boris Chain systematically purified penicillin, established its mouse and human therapeutic efficacy against lethal streptococcal infections, and helped organize industrial submerged fermentation during World War II. Fleming, Florey, and Chain shared the 1945 Nobel Prize in Physiology or Medicine.7ID: GK-HIST-00628
mediumFreedom Struggle & National Movement
The three-member Cabinet Mission sent to India in March 1946 included Lord Pethick-Lawrence, Sir Stafford Cripps, and which British official?
Verified Explanation
The British Cabinet Mission of 1946 was composed of three cabinet ministers: Lord Pethick-Lawrence (Secretary of State), Sir Stafford Cripps (President of the Board of Trade), and A.V. Alexander (First Lord of the Admiralty).8ID: GK-INVN-00701
hardMedical Discoveries & Vaccines
In June 1929, Alexander Fleming published his accidental discovery of penicillin in which prestigious British medical journal?
Verified Explanation
Alexander Fleming published his findings under the title 'On the Antibacterial Action of Cultures of a Penicillium, with Special Reference to their Use in the Isolation of B. influenzae' in the June 1929 issue of the British Journal of Experimental Pathology. The paper described how Penicillium notatum broth inhibited staphylococci and other Gram-positive pathogens.9ID: GK-INVN-00710
mediumTransport & Mechanical Inventions
On March 10, 1876, what were the historic first intelligible words spoken by Alexander Graham Bell over his experimental liquid telephone transmitter?
Verified Explanation
On March 10, 1876, at his laboratory at 5 Exeter Place in Boston, Alexander Graham Bell spoke into a variable resistance liquid transmitter containing dilute acid. His assistant, Thomas A. Watson, listening at a receiver in the adjoining room, distinctly heard and recorded: 'Mr. Watson, come here, I want to see you.'10ID: GK-INVN-00786
easyMedical Discoveries & Vaccines
Which clinically vital blood antigen system was discovered in 1937-1940 by Karl Landsteiner and Alexander S. Wiener using rabbit antiserum against monkey erythrocytes?
Verified Explanation
In 1937 and published in 1940, Karl Landsteiner and Alexander S. Wiener injected red blood cells from Rhesus macaque monkeys (Macaca mulatta) into rabbits and guinea pigs. The resulting antibody agglutinated red blood cells in about 85% of Caucasian human blood donors, revealing the Rh factor (Rh-positive vs Rh-negative) and explaining hemolytic disease of the newborn.Related Knowledge Topics to Discover
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