general knowledge Online Quiz - 2830

Bhaskara II (1114-1185 CE), also known as Bhaskaracharya, was a renowned mathematician and astronomer who wrote 'Siddhanta Shiromani'. India's seventh satellite launched in 1979 was named IRIS (later renamed Bhaskara II) in his honor, following the earlier Bhaskara I satellite. Aryabhatta was a 5th-6th century astronomer (India's first satellite was named after him), Bhaskara I was a 7th-century astronomer, and the question has a correct option.

Mawsynram in Meghalaya holds the Guinness World Record for highest average annual rainfall at approximately 11,872 mm. Cherrapunji (now Sohra), also in Meghalaya, was previously thought to be the wettest but now holds the record for highest rainfall in a calendar year. Both locations receive extreme rainfall due to their geography on the Khasi Hills. Shillong is Meghalaya's capital, and Calicut is in Kerala.

Russia is the world's largest country by land area, covering approximately 17.1 million square kilometers across Eastern Europe and Northern Asia. Vatican City is the smallest country at 0.44 square kilometers. Australia is the sixth-largest country (a continent), and the USA is the fourth-largest at about 9.8 million square kilometers. Russia's size is more than double that of any other country.

The Dead Sea has the highest salinity at approximately 34% salt content, nearly 10 times saltier than ocean water (3.5%). This extreme salarity is due to high evaporation rates in the Rift Valley and minimal outflow. The Red Sea is also very saline (4%) but less than the Dead Sea. The Black Sea has lower salinity (1.8%) due to freshwater influx, and the Mediterranean Sea is moderately saline (3.8%).

Galileo Galilei (1564-1642) made significant improvements to the telescope in 1609, discovered Jupiter's four largest moons (Io, Europa, Ganymede, Callisto), and studied pendulum motion which led to more accurate timekeeping. While he didn't invent the telescope (Hans Lippershey did), his astronomical discoveries and systematic observations were revolutionary. His work on pendulums later influenced Christian Huygens' pendulum clock.

The United Nations Headquarters has been located in New York City since 1952, situated on international territory along the East River. The complex was built with donations from member nations, including the USA. The Hague (spelled incorrectly in the option) hosts the International Court of Justice, Geneva hosts the UN's European office (Palais des Nations), and Paris hosts UNESCO but not the main UN headquarters.

A periscope is an optical instrument that uses mirrors or prisms to allow viewing objects that are not in the direct line of sight, essential for submarines to observe the surface while submerged. It works on the principle of multiple reflections. Kaleidoscopes create symmetrical patterns, spectroscopes analyze light spectra, and telescopes magnify distant objects but cannot see around obstacles.

Sardar Vallabhbhai Patel was called the 'Iron Man of India' for his decisive role in integrating over 500 princely states into the Indian Union after independence in 1947. As India's first Home Minister, he used diplomacy and sometimes force to convince rulers to accede. His steely resolve and administrative skills earned him this title from the press. Nehru was the first PM, Bose was a revolutionary leader, and Pant was a senior Congress leader.

Amartya Sen is a world-renowned economist who won the Nobel Prize in Economic Sciences in 1998 for his work on welfare economics, social choice theory, and famine analysis. His books like 'Poverty and Famines' and 'Development as Freedom' are influential. He studied at Cambridge and has taught at Harvard, Oxford, and other prestigious universities. Biochemistry, electronics, and geology are unrelated to his field.

R. K. Laxman was one of India's most celebrated cartoonists, best known for creating the 'Common Man' character that appeared daily in The Times of India for decades. His satirical cartoons captured Indian politics and everyday life with remarkable wit and observation.

The ozone layer in the stratosphere absorbs most of the Sun's ultraviolet (UV) radiation, particularly harmful UV-B rays. This absorption protects living organisms from DNA damage, skin cancer, and other harmful effects that would occur if excessive UV radiation reached the Earth's surface.

In database terminology, a field represents a single attribute or category of data, similar to a column in a spreadsheet. Each field contains the same type of information across all records - for example, a 'Phone Number' field would only contain telephone number data, while a record is a complete set of all fields for one entry.

The National Institute of Virology (NIV) is located in Pune, Maharashtra. It is one of India's premier virology research institutes under the Indian Council of Medical Research (ICMR) and has played crucial roles in studying and managing various disease outbreaks and epidemics in India.

The Meenakshi Temple is a historic Hindu temple located in Madurai, Tamil Nadu. Dedicated to Goddess Meenakshi (a form of Parvati) and Lord Sundareswarar (Shiva), it is renowned for its stunning Dravidian architecture with its towering gopurams and is one of India's most important pilgrimage sites.

Aurora Borealis is a natural light display that occurs in the Earth's sky, predominantly seen in high-latitude regions within the Arctic. It is commonly known as the Northern Lights, a spectacular atmospheric phenomenon.

A sand iron is a type of golf club, specifically designed to help players hit balls out of sand bunkers. It has a wide, flanged sole that prevents the club from digging too deep into the sand, making it essential for bunker play.

Michelangelo painted the ceiling of the Sistine Chapel between 1508 and 1512 under the commission of Pope Julius II. This masterpiece features scenes from the Book of Genesis and is considered one of the greatest works of art in history.

The teddy bear was named after President Theodore Roosevelt after a 1902 hunting trip where he refused to shoot a captured bear. A political cartoon inspired a toy maker to create stuffed bears called 'Teddy's bears', which became hugely popular.

Tooth decay (dental caries) is the most common non-contagious disease worldwide, affecting about 2.3 billion people globally according to WHO statistics. It's caused by bacteria in the mouth converting sugars into acids that dissolve tooth enamel.

Alaska is by far the largest state in the United States, covering 663,300 square miles. It's more than twice the size of Texas, the second-largest state. Ontario is a Canadian province, not a U.S. state, while Canada is a separate country.