NTSE/CBSE Class 10 Social Science

Black soil (also called regur soil) is ideal for cotton cultivation because it retains moisture well and has high fertility. Cotton is traditionally grown in black soil regions of India. Laterite and alluvial soils are better suited for different crops like rice or tea.

The Quit India Movement was launched by Mahatma Gandhi on August 8, 1942, demanding an end to British rule. It was a major movement during India's independence struggle. 1943 and 1944 are incorrect as the movement had already begun.

Karl Marx is considered the father of modern socialism and communism. Adam Smith is known for capitalism and free markets. Robert Owen was a utopian socialist who came before Marx, but Marx founded socialism as a systematic political theory.

Sir Syed Ahmed Khan founded the Scientific Society in 1864 to promote scientific education and translate Western works into Urdu. This was part of his educational reform movement. 1858 and 1860 are incorrect years.

The Egyptian calendar was primarily a solar calendar with 12 months of 30 days each. It was one of the first solar calendars in history. Lunar calendars follow moon phases, while the Egyptian calendar was based on the sun and the star Sirius.

Bhakra Dam is built on the Sutlej River in Himachal Pradesh. It's a major dam in India, part of the Bhakra-Nangal project. Narmada has its own dams, and Krishna is in southern India.

UTI (Unit Trust of India) was established in 1964 by an Act of Parliament to mobilize savings and promote investment in securities. It was India's first mutual fund and played a key role in developing the capital markets. 1964 is the correct founding year.

Mixed economies feature both market forces and government intervention in price determination. Controlled price systems operate through mechanisms like price ceilings, floors, subsidies, and minimum support prices that governments use to stabilize markets, protect producers/consumers, and ensure social welfare. Pure capitalism relies on free markets, while socialism features extensive state control.

Bal Gangadhar Tilak founded and edited two newspapers: Kesari (Marathi) and Maratha (English). Kesari, started in 1881, became a powerful vehicle for nationalist ideas and Tilak's advocacy of swaraj. Som Prakash was associated with Ishwar Chandra Vidyasagar, and Samvad Kaumudi with Raja Ram Mohan Roy.

Barren Island, located in the Andaman Sea, is India's only active volcano and has erupted multiple times in recent history. It is a uninhabited island and part of the Andaman & Nicobar archipelago. Amini and the Lakshadweep islands are coral atolls with no volcanic activity.

Bhilai (established 1955) and Bokaro (established 1964) steel plants were set up with Soviet collaboration as part of India's Second and Third Five-Year Plans. Jamshedpur was established by Tata (private initiative), and Durgapur was established with British and German collaboration. The Soviet model influenced both technology and organizational structure at Bhilai and Bokaro.

The World Health Organization (WHO), a specialized agency of the UN for international public health, has its headquarters in Geneva, Switzerland. Geneva hosts many international organizations due to Switzerland's neutrality. Paris is home to UNESCO, and Rome to FAO.

Khan Abdul Ghaffar Khan (1890-1988), a Pashtun independence activist from the North-West Frontier Province, was called 'Frontier Gandhi' for his nonviolent philosophy and close association with Mahatma Gandhi. He founded the Khudai Khidmatgar (Servants of God) movement and advocated for Hindu-Muslim unity and nonviolent resistance against British rule.

The Naxalite movement originated in 1967 in the Naxalbari region of Darjeeling district, West Bengal, as an armed peasant uprising against landlords. Led by Charu Mazumdar and Kanu Sanyal, it advocated Maoist ideology and protracted people's war. The movement later spread to other states but began in West Bengal.

Exfoliation is a weathering process where rocks peel off in concentric layers or sheets due to pressure release as overlying material erodes, or from thermal expansion and contraction. This is common in granitic rocks and creates dome-shaped formations like Half Dome in Yosemite. Landslide involves mass movement, and earth flow is a type of slope failure.

The Simon Commission (1927-29), officially the Indian Statutory Commission, was chaired by Sir John Simon. It was formed to review constitutional reforms in India but had no Indian members, leading to nationwide boycotts and protests. Lord Dalhousie and Lord Canning were 19th-century Viceroys and unrelated to this commission.

Steel production requires iron ore as the primary mineral, coal as both fuel and reducing agent, and manganese as a key alloying element that improves strength, hardness, and removes impurities like sulfur. While limestone is crucial in steelmaking as a flux to remove silica impurities, the question specifically asks for minerals used 'in' steel - meaning the final product composition, where manganese is an essential alloying mineral.

Andhra Pradesh is the largest producer of red chillies in India, with the Guntur region being particularly famous for chilli cultivation. The state has the ideal climate and soil conditions for chilli farming, and Guntur is home to Asia's largest chilli market.

Literacy is essential for democracy because an educated citizenry can make informed decisions and participate meaningfully in democratic processes. Regionalism creates division rather than strengthening democracy, while unemployment is a socioeconomic challenge that can actually undermine democratic stability if widespread.

Oak is a temperate hardwood tree known for its strong, durable wood used in furniture and construction. Pine is a softwood conifer, while 'Cider' appears to be a typo (likely meant 'Cedar' which is also a softwood). Hardwoods like oak are typically broad-leaved deciduous trees.

Vijay Lakshmi Pandit was the first woman and first Indian to serve as President of the UN General Assembly in 1953. She was a prominent diplomat and sister of Jawaharlal Nehru, representing India on the international stage.

Subhas Chandra Bose founded the Azad Hind Fauj (Indian National Army) in 1943 with Japanese support to fight British rule. Bhagat Singh and Chandrashekhar Azad were revolutionaries who died before INA's formation.

The transatlantic slave trade primarily occurred between the 16th and 19th centuries, beginning around the 1500s and peaking in the 18th century before abolition movements ended it in the 1800s. The 10th-13th and 12th-17th centuries are too early for this colonial-era trade.