General Knowledge - Social Sciences & Competitive Exam Prep

The Earth's diameter is approximately 12,742 kilometers, which rounds to about 12,800 km. This measurement represents the average diameter through the Earth's center from surface to surface. The precise equatorial diameter is slightly larger at 12,756 km, while the polar diameter is about 12,714 km.

The Indus Valley Civilization was discovered in 1921-1922 by archaeologist Dayaram Sahni. The excavations at Harappa began in 1921, followed by Mohenjo-daro in 1922. This discovery revealed one of the world's earliest urban civilizations.

The Earth's shape is technically an oblate ellipsoid (also called oblate spheroid), meaning it's slightly flattened at the poles and bulging at the equator. This shape results from Earth's rotation causing centrifugal force. A perfect sphere doesn't capture this subtle but important geometric difference.

South Africa has historically been the world's leading gold producer, though China has recently surpassed it. The question refers to the historical context when South Africa dominated global gold production. The country's Witwatersrand basin is the world's largest gold-producing region.

The Gayatri Mantra is one of the most sacred hymns in Hinduism and appears in the Rigveda (Book 3, Hymn 62.10). It is dedicated to Savitr, the sun deity, and is recited daily by millions of Hindus during their morning prayers.

Perihelion is the point in a planet's orbit where it is closest to the Sun. The term comes from Greek: 'peri' meaning near and 'helios' meaning sun. Perigee refers to the moon's closest point to Earth, and apogee is its farthest point.

Bairam Khan was appointed as Akbar's guardian and regent after Humayun's death in 1556. Akbar was only 13 years old when he ascended the throne, and Bairam Khan guided him until Akbar assumed full control in 1560. Faizi was a scholar in Akbar's court later, and Hemu was a rival general.

A lunar eclipse can only occur during a full moon when the Sun, Earth, and Moon are aligned in a straight line with Earth in the middle. The Earth's shadow then falls on the Moon's surface. During a new moon, the moon is between Earth and Sun, making a solar eclipse possible instead.

The Quit India Movement was launched by Mahatma Gandhi on August 8, 1942, after the Cripps Mission failed to promise Dominion status after World War II. The Cripps Mission (March 1942) offered limited self-government but was rejected by Indian leaders. The Cabinet Mission came much later in 1946.

Tarapur Atomic Power Station (TAPS) in Maharashtra is India's first and oldest commercial nuclear power station, commissioned in 1969 with assistance from the United States. Kota and Narora came later (1970s-80s). Tarapur has two operating units and remains a significant part of India's nuclear power program.

Buddha is known as 'the Light of Asia' because his teachings illuminated the path to enlightenment and liberation from suffering. This title was popularized by Edwin Arnold's 1879 epic poem 'The Light of Asia' which narrates the Buddha's life and philosophy. Mahavira founded Jainism, and Chandragupta Maurya was an emperor.

Karl Marx is regarded as the founder of scientific socialism because he provided a systematic analysis of capitalism and developed theories about class struggle and historical materialism. His works 'The Communist Manifesto' (with Engels) and 'Das Kapital' laid the foundation for socialist movements worldwide. Max Muller was a scholar of Indian philosophy, and Lenin implemented Marxist theory.

Alexander the Great died in Babylon in 323 BCE at age 32. After returning from his Indian campaign, he settled in Babylon and fell ill, likely due to fever or poisoning. Taxila was a center of learning in India he visited, and Patala (near modern Hyderabad, Pakistan) was a city he founded on the Indus.

Venus is the hottest planet despite Mercury being closer to the Sun. Venus has an extremely dense atmosphere of carbon dioxide (96.5%) that creates an intense greenhouse effect, trapping heat and raising surface temperatures to about 465°C. Mercury has no atmosphere to retain heat, so its temperature drops drastically at night.

The Sahara Desert in Africa is the world's largest hot desert, covering approximately 9.2 million square kilometers. When including polar deserts (Antarctica and the Arctic are technically deserts due to low precipitation), Antarctica is largest, but in common usage 'desert' refers to hot deserts like Sahara, Gobi, and Thar.

The Panchatantra, a collection of Sanskrit fables featuring animals with moral lessons, was composed during the Gupta period (c. 3rd-5th century CE) by scholar Vishnu Sharma. It is one of India's most influential contributions to world literature. The Maurya period was earlier (322-185 BCE), and the Sultanate period was much later (13th-16th century).

Oxygen makes up about 46-47% of Earth's crust by mass, making it the most abundant element. Silicon comes second at ~28%, while carbon and sulphur are much less abundant.

Dasht-e Lut in Iran holds the record for the highest land surface temperature ever measured (70.7°C in 2005). Death Valley previously held the air temperature record, but satellite data shows Iran's Lut Desert is hotter at surface level.

The share market, also known as the stock market or equity market, is directly related to stock exchanges where shares of publicly held companies are traded. World Market and Big Market are not specific financial terms.

In India, the Union Budget is traditionally presented on the last working day of February (February 28th or 29th). This practice allows time for parliamentary discussion before the new financial year begins on April 1st.

Indian Railways generates the majority of its revenue from freight transportation, not passenger fares. Freight traffic accounts for approximately 65-70% of total revenue, making it the primary revenue source.

India's postal system divides the country into 8 pincode zones (1-8), each covering specific geographical regions. The first digit of a 6-digit PIN code represents the zone, helping in efficient mail sorting and delivery.

The Bombay Stock Exchange (BSE), established in 1875, is India's oldest and first stock exchange, and also the oldest in Asia. It played a pioneering role in developing the Indian capital market.

According to the Indian Constitution, the Chief Minister is responsible to the Governor of the state. The Governor appoints the Chief Minister and the council of ministers, and they must enjoy the confidence of the state legislative assembly.