General Quiz

Jai Ganesh · 2025-02-13 15:55:34

Hi,

#10245. Name the French chemist (1 January 1852 – 5 March 1903) who designed an apparatus to produce a spark using an induction coil and used it to generate the spectra of rare earth elements which he examined using spectroscopy, thus detecting the element europium in 1896, and isolated it as the oxide europia in 1901. He helped Marie Curie to confirm the existence of another new element, radium, in 1898.

10246. Name the German chemist (19 February 1799 – 27 April 1882) who co-discovered indium in 1863 with Hieronymous Theodor Richter.

He was born in Bernburg, Anhalt-Bernburg, Holy Roman Empire and died in Freiberg. He was color blind, or could only see in whites and blacks, and that is why Theodor Richter became his science partner. Richter would examine the colors produced in reactions that they studied.

Jai Ganesh · 2025-02-14 16:01:48

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#10247. Name the French chemist (14 July 1874 – 31 August 1949). He is often considered the discoverer of the element actinium, though H. W. Kirby disputed this in 1971 and gave credit instead to German chemist Friedrich Oskar Giesel.

#10248. Name the American nuclear physicist (June 15, 1912 – July 3, 2002). Together with Dale R. Corson and Emilio Segrè, he synthesized the element astatine, in 1940. He received his PhD under Ernest Lawrence at Lawrence Livermore National Laboratory. Lawrence, he, and their colleagues devised the first cyclotron.

Jai Ganesh · 2025-02-15 15:23:58

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#10249. Name the term in Chemistry: Phenomenon of attracting and holding water molecules via either absorption or adsorption from the surrounding environment, which is usually at normal or room temperature. If water molecules become suspended among the substance's molecules, adsorbing substances can become physically changed, e.g. changing in volume, boiling point, viscosity or some other physical characteristic or property of the substance.

It is essential for many plant and animal species' attainment of hydration, nutrition, reproduction and/or seed dispersal. Biological evolution created hygroscopic solutions for water harvesting, filament tensile strength, bonding and passive motion – natural solutions being considered in future biomimetics.

#10250. Name the term in Life Science: A term referred to the special characteristic of having two different kinds of nuclei in a cell. There are many differences between the types of nuclei. This feature is observed in protozoan ciliates, like Tetrahymena, and some foraminifera. Ciliates contain two nucleus types: a macronucleus that is primarily used to control metabolism, and a micronucleus which performs reproductive functions and generates the macronucleus.

Jai Ganesh · 2025-02-16 15:49:36

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#10251. Name the term in Chemistry: Any chemical reaction in which a molecule of water breaks one or more chemical bonds. The term is used broadly for substitution, elimination, and solvation reactions in which water is the nucleophile.

#10252. Name the term in Chemistry: Form of water in which hydrogen atoms are all deuterium that makes up most of the hydrogen in normal water. The presence of the heavier isotope gives the water different nuclear properties, and the increase in mass gives it slightly different physical and chemical properties when compared to normal water.

Deuterium is a heavy hydrogen isotope. Heavy water contains deuterium atoms and is used in nuclear reactors. Semiheavy water (HDO) is more common than pure heavy water, while heavy-oxygen water is denser but lacks unique properties. Tritiated water is radioactive due to tritium content.

Jai Ganesh · 2025-02-17 15:11:24

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#10253. Name the term in Chemistry: It is water that has a high mineral content. It is formed when water percolates through deposits of limestone, chalk or gypsum, which are largely made up of calcium and magnesium carbonates, bicarbonates and sulfates.

#10254. Name the term in Chemistry: A chemical reaction between molecular hydrogen (H2) and another compound or element, usually in the presence of a catalyst such as nickel, palladium or platinum. The process is commonly employed to reduce or saturate organic compounds. It typically constitutes the addition of pairs of hydrogen atoms to a molecule, often an alkene. Catalysts are required for the reaction to be usable; non-catalytic of these takes place only at very high temperatures. They reduces double and triple bonds in hydrocarbons.

Jai Ganesh · 2025-02-18 15:58:18

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#10255. What does the term in Physics: A type of radioactive decay in which an atomic nucleus emits an alpha particle (helium nucleus) and thereby transforms or "decays" into a different atomic nucleus, with a mass number that is reduced by four and an atomic number that is reduced by two. An alpha particle is identical to the nucleus of a helium-4 atom, which consists of two protons and two neutrons.

#10256. What does the term in Physics mean? A periodic variable is a measure of its change in a single period (such as time or spatial period). There are various definitions of amplitude (which are all functions of the magnitude of the differences between the variable's extreme values.)

Jai Ganesh · 2025-02-19 15:35:45

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#10257. What does the term in Physics - In thermodynamics, it is the end point of a phase equilibrium curve? One example is the liquid–vapor critical point, the end point of the pressure–temperature curve that designates conditions under which a liquid and its vapor can coexist.

At higher temperatures, the gas comes into a supercritical phase, and so cannot be liquefied by pressure alone.

#10258. Name the term in Physics : It is the temperature the air needs to be cooled to (at constant pressure) in order to produce a relative humidity of 100%. This temperature depends on the pressure and water content of the air. When the air is cooled below it, its moisture capacity is reduced and airborne water vapor will condense to form liquid water known as dew. When this occurs through the air's contact with a colder surface, dew will form on that surface.

Jai Ganesh · 2025-02-20 15:15:31

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#10259. Name the Swedish chemist (10 September 1797 – 15 October 1858). He discovered the rare earth elements lanthanum, erbium and terbium.

#10260. Name the French chemist (12 April 1872 – 5 November 1938), a professor of the Sorbonne, a member of the Institut de France, and director of the Institute of Chemistry in Paris. Much of his work focused on the rare earths, isolating and separating elements such as europium and gadolinium, and studying their spectra, their magnetic properties and their atomic masses. He discovered the element lutetium (atomic number 71). He also studied the efflorescence of saline hydrates.[

Jai Ganesh · 2025-02-21 15:32:04

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#10261. Name the self-taught French chemist (18 April 1838 – 28 May 1912) known for his discoveries of the chemical elements gallium, samarium and dysprosium. He developed methods for separation and purification of the rare earth elements and was one of the pioneers of the science of spectroscopy.

#10262. Name the American chemist (23 September 1920 in Salt Lake City, Utah – 24 February 1973 in Alamo, California) at the University of Chicago who co-discovered the elements curium (1944) and americium (1944–1945). Later he worked at UCLA and for the Lawrence Livermore laboratory in California.

He also worked on niobium and nuclear spectroscopy.

Jai Ganesh · 2025-02-22 16:39:28

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#10263. Name the Italian and naturalized-American physicist and Nobel laureate (1 February 1905 – 22 April 1989), who discovered the elements technetium and astatine, and the antiproton, a subatomic antiparticle, for which he was awarded the Nobel Prize in Physics in 1959 along with Owen Chamberlain.

#10264. Name the German chemist known for his work in both organic and inorganic chemistry (31 July 1800 – 23 September 1882), being the first to isolate the chemical elements beryllium and yttrium in pure metallic form. He was the first to prepare several inorganic compounds, including silane and silicon nitride.

Jai Ganesh · 2025-02-23 15:23:55

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#10265. Name the French chemist and one of the discoverers of bromine (30 September 1802 – 30 April 1876).

#10266. Name the French pharmacist and chemist (16 May 1763 – 14 November 1829). He was the discoverer of chromium and beryllium.

Jai Ganesh · 2025-02-24 16:31:11

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#10267. Name the English chemist and physicist (6 August 1766 – 22 December 1828) who is famous for discovering the chemical elements palladium and rhodium. He also developed a way to process platinum ore into malleable ingots.

#10268. Name the German alchemist who lived and worked in Hamburg (c. 1630 – c. 1692 or c. 1710). In 1669, he accidentally discovered the chemical element phosphorus while searching for the "philosopher's stone", a substance which was believed to transmute base metals into gold.

Jai Ganesh · 2025-02-25 16:01:40

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#10269. Name the Czech chemist from the University of Prague (May 8, 1855 – February 15, 1935), who investigated the properties of the rare earth elements, especially the determination of their atomic weights. He predicted the existence of the rare earth element promethium ten years before the existence of the gap was confirmed experimentally (although the element was still undiscovered). In the 1880s, when he already had started lecturing in Prague, he still competed internationally in cycling races.

#10270. Name the Austrian-Swedish physicist who was instrumental in the discovery of nuclear fission (7 November 1878 – 27 October 1968).

Completing her doctoral research in 1906, she became the second woman from the University of Vienna to earn a doctorate in physics. She spent much of her scientific career in Berlin, where she was a physics professor and a department head at the Kaiser Wilhelm Institute for Chemistry. She was the first woman to become a full professor of physics in Germany.

Jai Ganesh · 2025-02-26 15:51:45

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#10271. Name the U.S. electrical engineer (October 29, 1870 – November 3, 1940). He was the director of the Maryland Academy of Science. He was secretary of Franklin Institute from 1910 to 1924. He is credited as a discoverer of the alpha ray.

#10272. Name the German chemist . He, Ida Tacke (who later married Noddack), and Otto Berg reported the discovery of element 43 (Technetium is a chemical element; it has symbol Tc and atomic number 43) and element 75 (Rhenium is a chemical element; it has symbol Re and atomic number 75) in 1925.

Jai Ganesh · 2025-02-27 16:05:23

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#10273. Name the German scientist (23 November 1874 – 1939). He is one of the scientists credited with discovering rhenium, the last element to be discovered having a stable isotope.

#10274. Name the German chemist (30 March 1811 – 16 August 1899). He investigated emission spectra of heated elements, and discovered caesium (in 1860) and rubidium (in 1861) with the physicist Gustav Kirchhoff.

Jai Ganesh · 2025-02-28 16:01:49

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#10275. World Book Day, also known as World Book and Copyright Day or International Day of the Book, is an annual event organized by UNESCO (United Nations Educational, Scientific and Cultural Organization) to promote reading, publishing, and copyright.

When is it celebrated every year?

#10276. International Day of Persons with Disabilities is an international observance promoted by the United Nations since 1992. It has been observed with varying degrees of success around the planet. The observance of the Day aims to promote an understanding of disability issues and mobilize support for the dignity, rights and well-being of persons with disabilities. It also seeks to increase awareness of gains to be derived from the integration of persons with disabilities in every aspect of political, social, economic and cultural life.

When is it celebrated every year?

Jai Ganesh · 2025-03-01 16:02:58

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#10277. Which day is it? World Alzheimer's Day, which takes place every year, is a global effort to raise awareness and challenge the stigma around Alzheimer's disease and other dementia? Join the Alzheimer's Association as we recognize the more than 55 million people across the world who are affected by this terrible disease.

#10278. When is the World Senior Citizen's Day celebrated? The celebration took place for the first time in 1991. The day is intended to increase awareness of the factors and issues that affect older adults, such as health deterioration and elder abuse. It is also a day to recognize and acknowledge the contributions of older people to society.

Jai Ganesh · 2025-03-02 15:11:13

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#10279. Trekkers, climbers, mountaineers, and adventurers around the world celebrate International Everest Day. This day commemorates the first successful ascent of Mount Everest by Sir Edmund Hillary of New Zealand and Tenzing Norgay of Nepal in 1953.

Which date is it?

#10280. Human Rights Day is observed annually around the world this day. It commemorates the anniversary of one of the world's most groundbreaking global pledges: the Universal Declaration of Human Rights (UDHR).

Which is the date?

Jai Ganesh · 2025-03-03 15:23:07

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#10281. This date each year, WCO Member Customs administrations celebrate International Customs Day. This is a chance for them to honour the dedication of their respective staffs, educate the public on Customs’ mission and role, and mobilize decision makers who can help ensure that they have the resources required to address challenges effectively and efficiently.

International Customs Day is also an opportunity for the WCO to highlight a specific area in which its Members are invited to act. This may be a topic of particular concern to societies around the world, or an approach identified as being key to advancing Customs’ mission. The objectives in either case are the same: to promote the standards and guidelines created by the WCO along with the aspirations voiced by Members and to ensure that these standards and guidelines are translated into real-world practices.

Which date is it?

#10282. When is the World Senior Citizen's Day celebrated?

The celebration took place for the first time in 1991. The day is intended to increase awareness of the factors and issues that affect older adults, such as health deterioration and elder abuse. It is also a day to recognize and acknowledge the contributions of older people to society.

Jai Ganesh · 2025-03-04 16:25:05

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#10283. National Doctors' Day is a day celebrated to recognize the contributions of physicians to individual lives and communities. The date varies from nation to nation depending on the event of commemoration used to mark the day. In some nations the day is marked as a holiday. Although supposed to be celebrated by patients in and benefactors of the healthcare industry, it is usually celebrated by health care organizations. Staff may organize a lunch for doctors during which physicians are presented with tokens of recognition. Historically, a card or red carnation may be sent to physicians and their spouses, along with a flower being placed on the graves of deceased physicians.

When is it in US?

#10284. When is Earth day observed? Earth Day is an annual event on to demonstrate support for environmental protection.

Jai Ganesh · 2025-03-05 15:13:16

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#10285. When is the Hindi Day celebrated?

#10286. International Day of Persons with Disabilities is an international observance promoted by the United Nations since 1992. It has been observed with varying degrees of success around the planet. The observance of the Day aims to promote an understanding of disability issues and mobilize support for the dignity, rights and well-being of persons with disabilities. It also seeks to increase awareness of gains to be derived from the integration of persons with disabilities in every aspect of political, social, economic and cultural life. It was originally called "International Day of Disabled Persons" until 2007. Each year the day focuses on a different issue.

When is it?

Jai Ganesh · 2025-03-06 15:49:43

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#10287. When is the International Day of Families observed? (The Day was proclaimed by the UN General Assembly in 1993 with resolution A/RES/47/237 and reflects the importance the international community attaches to families. The International Day provides an opportunity to promote awareness of issues relating to families and to increase knowledge of the social, economic and demographic processes affecting families.)

#10288. The International Day of Yoga is a day in recognition of Yoga, that is celebrated around the world annually, following its adoption by the United Nations in 2014. As Yoga exercises have shown significant benefits for physical and mental well-being, it was considered important by the UN to globally promote this wellness practice, which originated in ancient India.

When is it celebrated?

Jai Ganesh · Yesterday 21:35:23

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#10289. When is International Literacy Day observed?

It was declared by UNESCO on 26 October 1966 at the 14th session of UNESCO's General Conference and celebrated for the first time in 1967. The day aims is to highlight, the importance of literacy to individuals, communities, and societies. Celebrations take place in several countries.

#10290. International Nurses Day (IND) is an international day observed around the world (the anniversary of Florence Nightingale's birth) each year, to mark the contributions that nurses make to society.

When is it?

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