Mixed GK

India became a founding member of the United Nations on October 30, 1945, shortly after World War II ended and before India's independence in 1947. India signed the UN Charter as a founding member even while still under British rule. The year 1947 is commonly confused with independence rather than UN membership, 1949 and 1950 relate to other constitutional developments.

While hydrogen is indeed the lightest gas, this is not the complete scientific explanation for its absence in the atmosphere. Being so light, hydrogen atoms can escape Earth's gravitational pull and don't remain concentrated in the lower atmosphere. Additionally, hydrogen is highly reactive and quickly forms compounds (like water with oxygen), so free molecular hydrogen doesn't accumulate. Option B captures the primary reason related to its low density, though the full explanation involves both escape velocity and chemical reactivity.

Kumar Sangakkara was the captain of the Sri Lankan cricket team during the 2011 ICC Cricket World Cup. He led the team to the finals where they lost to India. Muralitharan was a legendary bowler, Jayasuriya was a former captain, and Jayawardene was a senior batsman but not the captain in 2011.

Rabindranath Tagore was the first to call Mohandas Karamchand Gandhi 'Mahatma' (Great Soul) in 1915. Tagore, the Nobel laureate poet, gave Gandhi this honorific name which became permanently associated with him. Neither Tilak nor the Nehrus (Motilal or Jawaharlal) gave him this title.

Dr. Sarvepalli Radhakrishnan was the first Vice-President of India, serving from 1952 to 1962. He was a renowned philosopher and scholar who later became the second President of India. V.V. Giri, Zakir Hussain, and G.S. Pathak all served as Presidents, not the first Vice-President.

Sucheta Kriplani became the first woman Chief Minister of India when she took charge of Uttar Pradesh in 1963. She was a freedom fighter and close associate of Mahatma Gandhi. Sarojini Naidu was the first woman Governor (of UP), while Mayawati and Rajkumari Amrit Kaur came much later.

Shantivan (Forest of Peace) is located in New Delhi and is the memorial site where India's third Prime Minister Indira Gandhi was cremated. It is near Raj Ghat (Mahatma Gandhi's memorial) and Vijay Ghat (Lal Bahadur Shastri's memorial). Agra, Varanasi, and Bihar are not locations of Shantivan.

Yuri Gagarin (Soviet cosmonaut) became the first human to journey into outer space on April 12, 1961, aboard Vostok 1. Valentina Tereshkova was the first woman in space (1963), Alan Shepard was the first American in space, and Dennis Tito was the first space tourist (2001).

Jupiter is the largest planet in our solar system, with a mass more than twice that of all other planets combined and a diameter of about 140,000 km. It is a gas giant with the famous Great Red Spot storm. Saturn is the second-largest, Neptune is fourth, and Earth is relatively small.

India's National Sports Day is celebrated on August 29 to mark the birth anniversary of hockey legend Major Dhyan Chand (born 1908). He is considered one of the greatest hockey players of all time. December dates relate to other events (Navy Day, Minority Rights Day, Kisan Diwas).

Holland is the name commonly used for two provinces (North and South Holland) within the Kingdom of the Netherlands. The country's official name is 'the Netherlands,' which is the correct and preferred name for the entire country. Zambia, Thailand, and Lesotho are separate African/Asian countries.

Jim Corbett National Park is located in the Nainital district of Uttarakhand (formerly Uttar Pradesh). It is India's oldest national park, established in 1936, and is famous for its Bengal tigers. It is not in Rajkot (Gujarat), Mysore (Karnataka), or Coorg (Karnataka).

The Atlantic Ocean is the second-largest ocean in the world, covering about 20% of Earth's surface. The Pacific Ocean is the largest and deepest ocean. The Arctic Ocean is the smallest, and the Indian Ocean is the third-largest.

In 2011, M.S. Dhoni was the captain of the Indian test cricket team. He led India to significant victories including the 2011 Cricket World Cup and the number one test ranking.

UNESCO (United Nations Educational, Scientific and Cultural Organization) is the cultural organization among the options. UNICEF works for children's rights, FAO for food and agriculture, and WHO for global health.

The ostrich is the largest flightless bird in the world, native to Africa and weighing up to 150 kg. Swift, falcon, and humming bird are all flying birds.

Turmeric is obtained from the root (specifically the rhizome) of the Curcuma longa plant. The rhizome is the underground stem that grows horizontally and sends out roots.

India first participated in the Olympic Games in 1920 at the Antwerp Olympics. India has participated in every Summer Olympics since then, except 1928.