Skip to content Home Questions Play Progress Daily Challenge Questions › Chemistry Questions QUESTION The Nobel Prize in Chemistry 1951 was awarded jointly to Edwin Mattison McMillan and ______ for their discoveries in the chemistry of the transuranium… Open question → QUESTION In which year did Louis Pasteur report his foundational work separating mirror-image tartrate crystals, helping establish modern stereochemistry? Open question → QUESTION Which chemist collaborated with Christopher Ingold on the 1937 studies of reaction kinetics and nucleophilic substitution of alkyl halides? Open question → QUESTION In the 1920s, who created the Left-Step Periodic Table (LSPT) of the chemical elements, basing the positions of the elements on patterns in the… Open question → QUESTION Who was credited with discovering the hydrogen isotope, or heavy hydrogen, for which he later received the 1934 Nobel Prize in Chemistry? Open question → QUESTION Who shared the 1979 Nobel Prize in Chemistry with Georg Wittig for developing boron- and phosphorus-containing compounds, respectively, as reagents in organic synthesis? Open question → QUESTION Assertion (A): Berthelot was among the nineteenth-century pioneers of artificial organic synthesis. Reason (R): Lavoisier proved that organic compounds could not be synthesised from… Open question → QUESTION In which year did Langmuir reform the Lewis concept by abandoning the idea of a stable cubical arrangement of the octet and introducing the… Open question → QUESTION Who discovered three chemical elements: cerium, thorium and selenium, and devised the modern method by which one or two letters are used to symbolize… Open question → QUESTION Which Swiss chemist proposed coordination theory in 1893 to explain bonding and structures in coordination compounds? Open question → QUESTION In which year did Lavoisier and his collaborators publish Méthode de nomenclature chimique? Open question → QUESTION Who discovered that diborane reacts with aldehydes and ketones to produce dialkoxyboranes, which are hydrolysed by water to produce alcohols? Open question → QUESTION Which scientist is associated with the 4n+2 π-electron rule for aromaticity in suitable planar, cyclic, conjugated systems? Open question → QUESTION Which electronegativity scale, associated with work published in 1932, assigns fluorine the highest value, commonly rounded to 4.0? Open question → QUESTION Which pair presented an electron-pair account relating molecular geometry to valence-shell electron arrangements in 1940? Open question → QUESTION With which scientist did William Ramsay show in 1894 that air also contained an element unknown until then, which was named Argon? Open question → QUESTION Which pair further developed the electron-pair repulsion model of molecular geometry in 1957? Open question → QUESTION Which listed pair published the 1933 work on the peroxide effect in adding hydrogen bromide to unsaturated compounds? Open question → QUESTION Which form of carbon was discovered in 1985 through work by a team including Robert F. Curl, Harold W. Kroto and Richard E. Smalley? Open question → QUESTION Which listed law was expressed in Lavoisier’s1789 Elements of Chemistry as the equality of the quantity of matter before and after a chemical operation? Open question → QUESTION Which scientist formulated the gas-solubility relation expressed in the concentration convention C = kPgas at fixed temperature? Open question → QUESTION Which compound was synthesized by Friedrich Wöhler in 1828, demonstrating that organic substances could be produced from inorganic materials and thereby challenging the vital… Open question → QUESTION J. Chadwick discovered which of the following subatomic particles in the year 1932? Open question → QUESTION Who received the 1904 Nobel Prize in Chemistry for work on inert gaseous elements in air and their place in the periodic system? Open question → Home Questions Play Progress 